Daikin RZQ71~125B7V3B, Service Manual

Page 1: ...Service Manual ESIE04 01 RZQ71 125B7V3B Sky Air Inverter R 410A B series ...

Page 2: ......

Page 3: ... and dimensions 1 6 1 4 RZQ71 RZQ100 and RZQ125 Installation and Service Space 1 8 2 General Outline Indoor Units 2 1 What Is in This Chapter 1 11 2 2 FCQ35B7V1 FCQ71B7V3B 1 12 2 3 FCQ100 125B7V3B 1 14 2 4 FFQ35 60BV1B 1 16 2 5 FBQ35B7V1 FBQ50B7V1 1 18 2 6 FBQ60B7V1 FBQ71B7V3B 1 20 2 7 FBQ100B7V3B FBQ125B7V3B 1 22 2 8 FDQ125B7V3B 1 24 2 9 FHQ35BUV1 FHQ50BUV1 1 26 2 10 FHQ60BUV1 FHQ71BUV1B 1 28 2 1...

Page 4: ...m 1 58 4 4 Triple System 1 60 4 5 Double Twin System 1 61 4 6 Indoor piping 1 62 4 7 Pipe connection diameters 1 64 4 8 Re using existing field piping 1 65 4 9 Piping Components 1 71 5 Switch Box Layout 5 1 What Is in This Chapter 1 73 5 2 RZQ71B7V3B 1 74 5 3 RZQ100B7V3B 1 75 5 4 FCQ35B7V1 FCQ71B7V3B 1 76 5 5 FCQ100 125B7V3B 1 77 5 6 FFQ35 60BV1B 1 78 5 7 FBQ35B7V1 FBQ125B7V3B 1 79 5 8 FDQ125B7V3B...

Page 5: ...25B7V3B 1 94 6 11 FHQ35 60BUV1 1 95 6 12 FHQ71 125BUV1B 1 96 6 13 FUQ71 125BUV1B 1 97 6 14 FAQ71BUV1B 1 98 6 15 FAQ100BUV1B 1 99 7 PCB Layout 7 1 What Is in This Chapter 1 101 7 2 RZQ71B7V3B 1 102 7 3 RZQ100B7V3B 1 104 7 4 FCQ35 60B7V1 1 106 7 5 FCQ71 125B7V3B 1 107 7 6 FFQ35 60BV1B 1 108 7 7 FBQ35 60B7V1 1 109 7 8 FBQ100 125B7V3B 1 110 7 9 FDQ125B7V3B 1 111 7 10 FHQ35 60BUV1 1 112 7 11 FHQ71 125B...

Page 6: ...ation 2 16 1 13 Pump Down Operation 2 17 1 14 Defrost Operation 2 18 1 15 Freeze Prevention Function 2 20 1 16 PMV Control 2 21 1 17 Preheating Operation Control 2 22 1 18 Crankcase Heater Control 2 23 2 Indoor Unit Functional Concept 2 1 What Is in This Chapter 2 25 2 2 Thermostat Control 2 26 2 3 Drain Pump Control 2 27 2 4 Condensation Avoidance Control 2 29 2 5 Draft Avoidance Control 1 2 30 2...

Page 7: ...3 30 1 8 Troubleshooting by LED Indications 3 32 1 9 Troubleshooting by Remote Controller Display LED Display 3 34 1 10 Overview of the Outdoor Safety Devices 3 37 1 11 Overview of the Indoor Safety Devices 3 38 2 Error Codes Indoor Units 2 1 What Is in This Chapter 3 39 2 2 Malfunctioning Indoor PCB A1 3 40 2 3 Malfunction of Drain Water Level System A3 3 41 2 4 Malfunctioning Drain System AF 3 4...

Page 8: ...1 3 80 3 20 Malfunction of Radiator Fin Temperature Thermistor P4 3 82 3 21 Failure of Capacity Setting PJ 3 84 3 22 Gas Shortage Malfunction U0 3 85 3 23 Abnormal Power Supply Voltage U2 3 86 4 Error Codes System Malfunctions 4 1 What Is in This Chapter 3 89 4 2 Malfunction of Transmission between Indoor and Outdoor Unit U4 or UF 3 90 4 3 Malfunction of Transmission between Indoor Unit and Remote...

Page 9: ... the Indoor Units 4 13 2 5 Overview of the Factory Settings on the Indoor Units 4 14 2 6 Setting the Ceiling Height 4 15 2 7 Setting the Filter Counter 4 16 2 8 MAIN SUB Setting when Using Two Remote Controllers 4 17 2 9 Setting the Centralized Group No 4 18 2 10 The Field Setting Levels 4 20 2 11 Overview of the Field Settings on the Outdoor Units 4 23 2 12 Overview of the Factory Settings on the...

Page 10: ...71 125B7V3B 5 4 2 Disassembly and Maintenance Indoor Units 2 1 What Is in This Chapter 5 17 2 2 FCQ35B7V1 FCQ71B7V3B 5 18 2 3 FCQ100 125B7V3B 5 20 2 4 FBQ35 50B7V1 5 22 2 5 FBQ60B7V1 FBQ71B7V3B 5 24 2 6 FBQ100 125B7V3B 5 26 2 7 FDQ125B7V3B 5 28 2 8 FFQ35 60BV1B 5 30 2 9 FHQ35 125BUV1 B 5 67 2 10 FUQ71 125BUV1B 5 82 2 11 FAQ71BUV1B 5 99 2 12 FAQ100BUV1B 5 110 ...

Page 11: ...epair and maintenance tasks for the Sky Air RZQ series Five parts This service manual consists of an introduction five parts and an index Introduction overview The introduction contains the following topics Part See page Part 1 System Outline 1 1 Part 2 Functional Description 2 1 Part 3 Troubleshooting 3 1 Part 4 Commissioning and Test Run 4 1 Part 5 Disassembly and Maintenance 5 1 Topic See page ...

Page 12: ...ntains the possible combinations between indoor units FDQ FHQ FUQ and FAQ and outdoor units of the Sky Air RZQ series 950 x 950 Cassette 600 x 600 Cas Duct FCQ35B7V1 FCQ50B7V1 FCQ60B7V1 FCQ71B7V3B FCQ100B7V3B FCQ125B7V3B FFQ25BV1B FFQ35BV1B FFQ50BV1B FFQ60BV1B FBQ25B7V1 FBQ35B7V1 FBQ50B7V1 FBQ60B7V1 FBQ71B7V3B FBQ100B7V3B FBQ125B7V3B RZQ71B7V3B 2 P 2 2 P RZQ100B7V3B 3 2 P 3 2 3 2 P RZQ125B7V3B 4 3...

Page 13: ...note 1 are the indoor units mentioned in order of the possible function most functions are on FCQ less functions are on FBQ 3 Between brackets are the required Refnet kits mentioned that are necessary to install the combination Possible indoor combination Simultaneous operation Outdoor models Twin Triple Double Twin RZQ71B7V3B 35 35 KHRQ22M20TA7 RZQ100B7V3B 50 50 KHRQ22M20TA7 35 35 35 KHRQ127H7 RZ...

Page 14: ...e of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product Reference 1 Mpa 1 0 19716 kgf cm2 HFC units Units using new refrigerants HCFC units Refrigerant name R407C R410A R22 Composing substances Non azeotropic mixture of HFC32 HFC125 and HFC134a 1 Quasi azeotropic mix ture of HFC32 and JF...

Page 15: ...hermodynamic characteristic of R410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific enthalpy kJ kg Liquid Vapor Specific entropy kJ KgK Liquid Vapor ...

Page 16: ...hat must be followed to prevent accidents with high pressure gases Be sure to follow the regulations 2 Handing of vessels Since R410A is high pressure gas it is contained in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or roll them on the ground 3 Storage A...

Page 17: ...harge hose X P Do not use the same tools for R22 and R410A P Thread specification differs for R410A and R407C Charging cylinder X O P Weighting instrument used for HFCs Gas detector O X P The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function O P To use existing pump for HFCs vacuum pump adaptor must be installed Weighting instrument O Charge mouthpiece X P Seal ...

Page 18: ...n A Pipe size R407C R410A Material Thickness tmmj Material Thickness tmmj φ6 4 O 0 8 O 0 8 φ9 5 O 0 8 O 0 8 φ12 7 O 0 8 O 0 8 φ15 9 O 1 0 O 1 0 φ19 1 O 1 0 1 2H 1 0 Nominal size Tube O D A Do Class 2 R410A Class 1 Conventional 1 4 6 35 9 1 9 0 3 8 9 52 13 2 13 0 1 2 12 70 16 6 16 2 5 8 15 88 19 7 19 4 3 4 19 05 24 0 23 3 Flare gauge 0 0 4 ...

Page 19: ...laring with a pipe extension margin of 1 0 to 1 5 mm For clutch type only Conventional tool with pipe extension margin adjustment can be used Torque wrench P Specifications Dimension B Unit mm No change in tightening torque No change in pipes of other sizes P Differences Change of dimension B Only 1 2 5 8 are extended Dimension A For class 1 R407C For class 2 R410A Nominal size Class 1 Class 2 Pre...

Page 20: ...ling adaptor Leak tester P Specifications Hydrogen detecting type etc Applicable refrigerants R410A R407C R404A R507A R134a etc P Differences Previous testers detected chlorine Since HFCs do not contain chlorine new tester detects hydrogen Refrigerant oil Air compal P Specifications Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle Offers high rust resistan...

Page 21: ...re scale indicates the relationship between pressure and temperature in gas saturated state P Differences Change in pressure Change in service port diameter Charge hose for R410A P Specifications Working pressure 5 08 MPa 51 8 kg cm2 Rupture pressure 25 4 MPa 259 kg cm2 Available with and without hand operate valve that prevents refrigerant from outflow P Differences Pressure proof hose Change in ...

Page 22: ...arge P Specifications High accuracy TA101A for 10 kg cylinder 2g TA101B for 20 kg cylinder 5g Equipped with pressure resistant sight glass to check liquid refrigerant charging A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories P Differences Measurement is based on weight to prevent change of mixing ratio during charging Charge mouthpiece P Specifi...

Page 23: ... What is in this part This part contains the following chapters Chapter See page 1 General Outline Outdoor Units 1 3 2 General Outline Indoor Units 1 11 3 Specifications 1 43 4 Functional Diagrams 1 55 5 Switch Box Layout 1 73 6 Wiring Diagrams 1 85 7 PCB Layout 1 101 ...

Page 24: ...ESIE04 01 1 2 Part 1 System Outline 3 1 1 5 ...

Page 25: ...contains the following information on the outdoor units P Outlook and dimensions P Installation and service space P Components General outline This chapter contains the following general outlines General outline See page 1 2 RZQ71 Outlook and dimensions 1 4 1 3 RZQ100 and RZQ125 Outlook and dimensions 1 6 1 4 RZQ71 RZQ100 and RZQ125 Installation and Service Space 1 8 ...

Page 26: ...Units ESIE04 01 1 4 Part 1 System Outline 3 1 1 4 5 1 2 RZQ71 Outlook and dimensions Outlook and dimensions The illustration below shows the outlook and the dimensions of the unit mm Installation and service space See page 1 8 ...

Page 27: ...table below contains the different components of the unit No Component 1 Gas pipe connection 2 Liquid pipe connection 3 Service port inside the unit 4 Grounding terminal M5 inside the switch box 5 Refrigerant piping intake 6 Power supply wiring intake 7 Control wiring intake 8 Drain outlet ...

Page 28: ...ESIE04 01 1 6 Part 1 System Outline 3 1 1 4 5 1 3 RZQ100 and RZQ125 Outlook and dimensions Outlook and dimensions The illustration below shows the outlook and the dimensions of the unit mm Installation and service space See page 1 8 ...

Page 29: ...ontains the different components of the unit No Component 1 Gas pipe connection 2 Liquid pipe connection 3 Service port inside the unit 4 Electronic connection and grounding terminal M5 inside the switch box 5 Refrigerant piping intake 6 Power supply wiring intake 7 Control wiring intake 8 Drain outlet ...

Page 30: ...red installation and service space mm The values in brackets are for the 100 and 125 class Suction side obstacle Discharge side obstacle Left side obstacle Right side obstacle Top side obstacle Obstacle is present In these cases close the bottom of the installation frame to prevent discharged air from being bypassed In these cases only 2 units can be installed 1 2 This situation is not allowed ...

Page 31: ...et the portion A sealed so that air from the outlet does not bypass Multiple rows The illustration below shows the required installation and service space mm The values in brackets are for the 100 and 125 class Relation of dimensions of H A and L are shown in the table below Obstacles exist in front of the outlet side Obstacles exist in front of the air inlet L A L H 0 L 1 2H 150 250 1 2H L 200 30...

Page 32: ...General Outline Outdoor Units ESIE04 01 1 10 Part 1 System Outline 3 1 1 4 5 ...

Page 33: ...outline This chapter contains the following general outlines General outline See page 2 2 FCQ35B7V1 FCQ71B7V3B 1 12 2 3 FCQ100 125B7V3B 1 14 2 4 FFQ35 60BV1B 1 16 2 5 FBQ35B7V1 FBQ50B7V1 1 18 2 6 FBQ60B7V1 FBQ71B7V3B 1 20 2 7 FBQ100B7V3B FBQ125B7V3B 1 22 2 8 FDQ125B7V3B 1 24 2 9 FHQ35BUV1 FHQ50BUV1 1 26 2 10 FHQ60BUV1 FHQ71BUV1B 1 28 2 11 FHQ100BUV1B 1 30 2 12 FHQ125BUV1B 1 32 2 13 FUQ71BUV1B 1 34...

Page 34: ...connection direct installation type see note 3 or more VIEW B VIEW D NOTES 1 Location of the nameplates Unit body on the bell mouth at the inside of the suction grill Decoration panel on the panel frame at the inside of the suction grill 2 When installing an optional accessory refer to the installation drawings For the fresh air intake kit an inspection port is necessary For the high efficiency fi...

Page 35: ...low contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Power supply connection 5 Transmission wiring connection 6 Air discharge grille 7 Air suction grille 8 Water supply intake 9 Corner decoration cover 10 Drain hose ...

Page 36: ... Adjustable NOTES 1 Location of the nameplates Unit body on the bell mouth at the inside of the suction grill Decoration panel on the panel frame at the inside of the suction grill 2 When installing an optional accessory refer to the installation drawings For the fresh air intake kit an inspection port is necessary For the high efficiency filter an inspection port is necessary For the branch duct ...

Page 37: ...low contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Power supply connection 5 Transmission wiring connection 6 Air discharge grille 7 Air suction grille 8 Water supply intake 9 Corner decoration cover 10 Drain hose ...

Page 38: ...cted into the ceiling or the unit continues 24 hour operation an additional insulation thickness 10mm or more of glasswool or polyethylene form is required 4 Though the installation is acceptable up to maximum of 660mm square ceiling opening keep the clearance of 45mm or less between the main unit and the ceiling opening so that the panel overlap allowance can be ensured Suspension bolt Adjustable...

Page 39: ...ents The table below contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Power supply connection 5 Remote control code and control wiring connection 6 Air discharge grille 7 Suction grille 8 Drain hose ...

Page 40: ...s when installing optional accessories 2 The required ceiling depth varies according to the configuration of the specific system 3 For maintenance of the air filter it is necessary to provide a service access panel according to the installation method Refer to the Filter installation method drawing Service space or more On circumference Knock out hole Suspension bolt Fresh air intake position Air ...

Page 41: ...he table below contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Remote controller wiring connection 5 Power supply connection 6 Drain hole 7 Air filter 8 Air suction side 9 Air discharge side 10 Nameplate ...

Page 42: ...ries when installing optional accessories 2 The required ceiling depth varies according to the configuration of the specific system 3 For maintenance of the air filter it is necessary to provide a service access panel according to the installation method Refer to the Filter installation method drawing Service space or more On circumference Knock out hole Suspension bolt Fresh air intake position A...

Page 43: ...he table below contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Remote controller wiring connection 5 Power supply connection 6 Drain hole 7 Air filter 8 Air suction side 9 Air discharge side 10 Nameplate ...

Page 44: ...t Fresh air intake position Suspension position VIEW A VIEW B VIEW C Suspension position or more Service Space NOTES 1 Refer to Outlook drawing for installing optional accessories when installing optional accessories 2 The required ceiling depth varies according to the configuration of the specific system 3 For maintenance of the air filter it is necessary to provide a service access panel accordi...

Page 45: ...he table below contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Remote controller wiring connection 5 Power supply connection 6 Drain hole 7 Air filter 8 Air suction side 9 Air discharge side 10 Nameplate ...

Page 46: ...tline Indoor Units ESIE04 01 1 24 Part 1 System Outline 3 1 1 4 5 2 8 FDQ125B7V3B Outlook and dimensions The illustration below shows the outlook and the dimensions of the unit mm VIEW A VIEW A SERVICE SPACE NOTE ...

Page 47: ...art 1 System Outline 1 25 3 1 4 5 Components The table below contains the different components of the unit No Component 1 Power supply intake 2 Drain connection 3 Gas pipe connection single union 4 Liquid pipe connection single union 5 Filter ...

Page 48: ...installation From the floor side or more Required space View from the front Hanging position Hanging position Hanging bolt Required space Position Hole of wall for taking out in piping back View from the front or more Service Space NOTES 1 Location of unit s Name plate Bottom of fan housing inside the suction grill 2 In case of using wireless remote controller this position will be a signal receiv...

Page 49: ...in pipe connection 7 Earth terminal Inside the electric components box 8 Suspention bracket 9 Backward piping and wiring connection opening lid 10 Upward piping and wiring connection opening lid 11 Right side pipe connection 12 Left back drain pipe connection 13 Left side drain pipe connection 14 Right side drain pipe connection 15 Hole of wall for taking out in piping back 16 Upward drain pipe co...

Page 50: ...nstallation From the floor side 2500 or more Required space View from the front Hanging position Hanging position Hanging bolt Required space Position Hole of wall for taking out in piping back View from the front or more Service Space NOTES 1 Location of unit s Name plate Bottom of fan housing inside the suction grill 2 In case of using wireless remote controller this position will be a signal re...

Page 51: ...in pipe connection 7 Earth terminal Inside the electric components box 8 Suspention bracket 9 Backward piping and wiring connection opening lid 10 Upward piping and wiring connection opening lid 11 Right side pipe connection 12 Left back drain pipe connection 13 Left side drain pipe connection 14 Right side drain pipe connection 15 Hole of wall for taking out in piping back 16 Upward drain pipe co...

Page 52: ...lation From the floor side 2500 or more Required space View from the front Hanging position Hanging position Hanging bolt Required space Position Hole of wall for taking out in piping back View from the front or more Service Space NOTES 1 Location of unit s Name plate Bottom of fan housing inside the suction grill 2 In case of using wireless remote controller this position will be a signal receive...

Page 53: ...in pipe connection 7 Earth terminal Inside the electric components box 8 Suspention bracket 9 Backward piping and wiring connection opening lid 10 Upward piping and wiring connection opening lid 11 Right side pipe connection 12 Left back drain pipe connection 13 Left side drain pipe connection 14 Right side drain pipe connection 15 Hole of wall for taking out in piping back 16 Upward drain pipe co...

Page 54: ...tallation or more Required space View from the front Hanging position Hanging position Hanging bolt Required space Position Hole of wall for taking out in piping back View from the front or more Service Space NOTES 1 Location of unit s Name plate Bottom of fan housing inside the suction grill 2 In case of using wireless remote controller this position will be a signal receiver Refer to the drawing...

Page 55: ...in pipe connection 7 Earth terminal Inside the electric components box 8 Suspention bracket 9 Backward piping and wiring connection opening lid 10 Upward piping and wiring connection opening lid 11 Right side pipe connection 12 Left back drain pipe connection 13 Left side drain pipe connection 14 Right side drain pipe connection 15 Hole of wall for taking out in piping back 16 Upward drain pipe co...

Page 56: ...sing the discharge grill the required space is 30mm or more Note 3 or more or more or more NOTES 1 Location for manufacture s label on bell mouth 2 This is where the signal of wireless remote controller is received Refer to the drawing of wireless remote controller in detail 3 When closing the discharge grill 2 or 3 way discharge direction of pipe connecion will be limited please refer to Installa...

Page 57: ...ow contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Air outlet 5 Air suction grille 6 Corner decoration cover 7 Right pipe wiring connection 8 Rear pipe wiring connection 9 Pipe through cover 10 Accessory drain elbow ...

Page 58: ...losing the discharge grill the required space is 30mm or more Note 3 or more or more or more NOTES 1 Location for manufacture s label on bell mouth 2 This is where the signal of wireless remote controller is received Refer to the drawing of wireless remote controller in detail 3 When closing the discharge grill 2 or 3 way discharge direction of pipe connecion will be limited please refer to Instal...

Page 59: ...ow contains the different components of the unit No Component 1 Liquid pipe connection 2 Gas pipe connection 3 Drain pipe connection 4 Air outlet 5 Air suction grille 6 Corner decoration cover 7 Right pipe wiring connection 8 Rear pipe wiring connection 9 Pipe through cover 10 Accessory drain elbow ...

Page 60: ...f using wireless remote controller this position will be a signal receiver Refer to the drawing of wireless remote controller in detail hole Required space 50 or more Approx Name plate Note 2 Piping direction Piping direction Piping direction Required space 50 or more Dimensions for full open front panel hole Piping and Wiring intake Approx Approx Approx Mounting Location 2500 OR MORE For installa...

Page 61: ...39 3 1 4 5 Components The table below contains the different components of the unit No Component 1 Front panel 2 Front grille 3 Air outlet 4 Gas pipe 5 Liquid pipe 6 Drain hose 7 Grounding terminal 8 Right side pipe connection hole 9 Left side pipe connection hole ...

Page 62: ...ller this position will be a signal receiver Refer to the drawing of wireless remote controller in detail Required space 50 or more Brand name plate Note 2 Piping direction Required space or more hole Piping and Wiring intake Approx Mounting Location Approx Approx Required space or more or more Service space for air filter Direction for air filter draw out Oval hole For wood screw Oval hole For wo...

Page 63: ...le below contains the different components of the unit No Component 1 Front grille 2 Air filter 3 Discharge outlet 4 Gas piping connection 5 Gas piping connection 6 Drain piping connection 7 Earth terminal 8 Slit hole for right side piping connection 9 Slit hole for left side piping connection ...

Page 64: ...General Outline Indoor Units ESIE04 01 1 42 Part 1 System Outline 3 1 1 4 5 ...

Page 65: ... P Technical specifications P Electrical specifications P Electrical data Outdoor units This chapter contains the following specifications Indoor units This chapter contains the following specifications Specifications See page 3 2 RZQ71 RZQ100 and RZQ125 1 44 Specifications See page 3 3 FCQ 1 47 3 4 FFQ 1 48 3 5 FBQ 1 49 3 6 FDQ 1 50 3 7 FHQ 1 51 3 8 FUQ 1 52 3 9 FAQ 1 53 ...

Page 66: ...n treatment Anti corrosion treatment PE Empty tubeplate hole 0 Fan Type Propeller Discharge direction Horizontal No of fans 1 2 Nominal air flow rate 230 V cooling 54 50 m min 103 00 m min 99 00 m min Nominal air flow rate 230 V heating 48 10 m min 101 00 m min 100 00 m min Fan motor model KFD 325 70 8A Fan speed nominal at 230 V No of steps 8 Fan speed nominal at 230 V cooling 813 rpm 802 rpm 772...

Page 67: ...5BUV1Bx2 RZQ71B7V3B 50 230 17 7 17 7 20 16 2 16 2 0 07 0 3 0 062x2 0 6x2 FAQ71BUV1B RZQ71B7V3B 50 230 16 8 16 8 20 16 2 16 2 0 07 0 3 0 043 0 3 FUQ71BUV1B RZQ71B7V3B 50 230 17 2 17 2 20 16 2 16 2 0 07 0 3 0 045 0 7 FCQ100B7V3B RZQ100B7V3B 50 230 Max 50Hz 253V Min 50Hz 207V 21 0 21 0 30 19 4 19 4 0 07 0 07 0 3 0 3 0 090 1 0 FCQ50B7V1x2 RZQ100B7V3B 50 230 21 2 21 2 30 19 4 19 4 0 07 0 07 0 3 0 3 0 0...

Page 68: ... RZQ125B7V3B 50 230 25 2 25 2 30 23 4 23 4 0 07 0 07 0 3 0 3 0 045x2 0 6x2 FCQ50B7V1x3 RZQ125B7V3B 50 230 25 8 25 8 30 23 4 23 4 0 07 0 07 0 3 0 3 0 045x3 0 6x3 FCQ35B7V1x4 RZQ125B7V3B 50 230 26 4 26 4 30 23 4 23 4 0 07 0 07 0 3 0 3 0 045x4 0 6x4 FFQ60BV1Bx2 RZQ125B7V3B 50 230 25 4 25 4 30 23 4 23 4 0 07 0 07 0 3 0 3 0 055x2 0 7x2 FFQ50BV1Bx3 RZQ125B7V3B 50 230 26 1 26 1 30 23 4 23 4 0 07 0 07 0 3...

Page 69: ...14 m min 15 m min 18 m min 18 m min 28 m min 31 m min Air flow rate heating low 10 m min 11 m min 14 m min 14 m min 21 m min 24 m min Qty x model 1 x QTS46B14M 1 x QTS46A17M Fan speed 2 steps direct drive Fan type Turbo fan Refrigerant Type R410A Safety and functional devices Fan motor thermal protector Fan motor thermal fuse Drain pump fuse Air filter Resin net with mold resistant Optional Temper...

Page 70: ...6 5 m min 8 0 m min 10 0 m min Air flow rate heating high 10 0 m min 15 0 m min Air flow rate heating low 6 5 m min 10 0 m min Qty x model 1 x D16P52A23 Fan speed 2 steps Fan type Turbo fan Refrigerant Type R410A Safety and functional devices Air filter Temperature control Microcomputer control Insulation Heat Both liquid and gas pipes Sound absorbing Weight Unit 17 5 kg Gross 21 kg Specification ...

Page 71: ...min Air flow rate heating low 9 0 m min 10 0 m min 14 0 m min 14 0 m min 20 0 m min 24 0 m min Qty x model 2 x 3 x Fan speed 2 steps 3 steps direct drive Fan type Sirocco Refrigerant Type R410A Safety and functional devices Fan motor thermal use Air filter Resin net with mold resistant Optional Temperature control Computerized control Microprocessor thermostat for cooling and heating Insulation He...

Page 72: ...in Air flow rate cooling low 43 0 m min Air flow rate heating high 43 0 m min Air flow rate heating low 43 0 m min Qty x model 1 x DPA216 178NB Fan speed Phase cut control direct drive Fan type Sirocco Refrigerant Type R410A Safety and functional devices Fan motor thermal use Air filter Optional Temperature control Microprocessor thermostat for cooling and heating Insulation Heat Both liquid and g...

Page 73: ... 14 0 m min 20 0 m min 25 0 m min Air flow rate heating high 13 0 m min 16 0 m min 17 0 m min 24 0 m min 30 0 m min Air flow rate heating low 10 0 m min 13 0 m min 14 0 m min 20 0 m min 25 0 m min Qty x model 3 x 3D12K1AA1 4 x 4D12K1AA1 3 x 3D12K2AA1 4 x 4D12K2AA1 Fan speed 2 steps Fan type Sirocco Refrigerant Type R410A Safety and functional devices Air filter Temperature control Insulation Heat ...

Page 74: ...m min 23 0 m min Air flow rate heating high 19 0 m min 29 0 m min 32 0 m min Air flow rate heating low 14 0 m min 21 0 m min 23 0 m min Qty x model 1 x QTS48A10M 1 x QTS50B15M Fan speed 2 steps Fan type Turbo fan Refrigerant Type R410A Safety and functional devices Air filter Resin net with mold resistant Temperature control Insulation Heat Heat resistant foamed polyethylene regular foamed polyeth...

Page 75: ... m min 23 0 m min Air flow rate cooling low 15 0 m min 19 0 m min Air flow rate heating high 19 0 m min 23 0 m min Air flow rate heating low 15 0 m min 19 0 m min Qty x model 1 x QCL9686M 1 x QCL1163MA QCL1163MB Fan speed 2 steps Fan type Cross flow fan Refrigerant Type R410A Safety and functional devices Air filter Temperature control Insulation Heat Foamed polystyrene foamed polyethylene Sound a...

Page 76: ...Specifications ESIE04 01 1 54 Part 1 System Outline 3 1 1 4 5 ...

Page 77: ...llowing information P Functional diagrams P Pipe connection diameters Functional diagrams This chapter contains the following functional diagrams Functional diagram See page 4 2 Pair system 1 56 4 3 Twin System 1 58 4 4 Triple System 1 60 4 5 Double Twin System 1 61 4 6 Indoor piping 1 62 4 7 Pipe connection diameters 1 64 4 8 Re using existing field piping 1 65 ...

Page 78: ...agrams ESIE04 01 1 56 Part 1 System Outline 3 1 1 4 5 4 2 Pair system RZQ71 6 15 14a 14a 14a 14a 16 8 5a 14a 11 1a 4 16 7 9 10 Liquid piping Indoor unit 2b 3 Heating Cooling 7 8 Outdoor unit Gas piping 12 10 1a 1a 8 ...

Page 79: ... 01 Functional Diagrams Part 1 System Outline 1 57 3 1 4 5 RZQ100 125 6 15 14a 14a 14a 14a 8 5a 11 1a 4 16 7 9 10 Liquid piping Indoor unit 2b 3 Heating Cooling 7 8 Outdoor unit Gas piping 12 10 8 17 1a 1a 8 ...

Page 80: ...em RZQ71 6 15 14a 14a 14a 14a 8 5a 11 4 16 7 9 10 Liquid piping Indoor unit 2b 3 Heating Cooling 7 8 Outdoor unit Gas piping 12 10 Indoor unit 7 13 13 14a 16 NOTE The press between the branch and the indoor units should have the same size as the indoor connections 19 1a 1a 1a 1a 1a ...

Page 81: ...25 6 15 14a 14a 14a 14a 8 5a 11 4 16 7 9 10 Liquid piping Indoor unit 2b 3 Heating Cooling 7 Outdoor unit Gas piping 12 Indoor unit 7 13 13 17 10 8 8 19 NOTE The press between the branch and the indoor units should have the same size as the indoor connections 1a 1a 1a 1a 1a ...

Page 82: ... 15 14a 14a 14a 14a 8 5a 11 4 16 9 10 Liquid piping 2b 3 Heating Cooling 7 Outdoor unit Gas piping 12 Indoor unit 7 13 17 10 8 8 Indoor unit 7 13 Indoor unit 7 13 19 8 NOTE The press between the branch and the indoor units should have the same size as the indoor connections 1a 1a 1a 1a 1a 1a 1a 1a ...

Page 83: ... 14a 14a 14a 8 5a 11 4 16 9 10 Liquid piping 2b 3 Heating Cooling 7 Outdoor unit Gas piping 12 17 10 8 Indoor unit 7 13 19 8 NOTE The press between the branch and the indoor units should have the same size as the indoor connections Indoor unit 7 13 Indoor unit 7 13 Indoor unit 7 13 1a 1a 1a 1a 1a 1a 1a 1a 1a ...

Page 84: ... Diagrams ESIE04 01 1 62 Part 1 System Outline 3 1 1 4 5 4 6 Indoor piping FFQ FHQ FUQ FAQ 7 Indoor unit Liquid piping Gas piping To outdoor unit 1a 1a 7 Indoor unit Liquid piping Gas piping To outdoor unit 1a 1a ...

Page 85: ...ESIE04 01 Functional Diagrams Part 1 System Outline 1 63 3 1 4 5 FCQ FBQ FDQ 7 Indoor unit Liquid piping Gas piping Heating Cooling 8 1a 1a ...

Page 86: ...pipe flare RZQ71B7V3B 15 9 mm 9 52 mm RZQ100B7V3B RZQ125B7V3B Model Gas pipe flare Liquid pipe flare FCQ35B7V1 9 5 mm 6 4 mm FCQ50 60B7V1 12 7 mm 6 4 mm FCQ71 125B7V3B 15 9 mm 9 5 mm FFQ35BV1B 9 5 mm 6 4 mm FFQ50 60BV1B 12 7 mm 6 4 mm FBQ35B7V1 9 5 mm 6 4 mm FBQ50 60B7V1 12 7 mm 6 4 mm FBQ71 125B7V3B 15 9 mm 9 5 mm FDQ125B7V3B 15 9 mm 9 5 mm FHQ35BUV1B 9 5 mm 6 4 mm FHQ50 60BUV1B 12 7 mm 6 4 mm FH...

Page 87: ...on proceed with pump down operation without interruption Check the compressor of the existing air conditioner for fault records Remove the existing air conditioner See if the contamination inside the existing pipe is acceptable Rework the flare For R410A See table Use the supplied flare nut Existing piping work for new air conditioner Non standard size All satisfactory Longer than 50 m Standard si...

Page 88: ... if the local piping has welded connections Notes for Twin Triple and Double Twin P Main piping L1 can be re used size up size down is allowed see further in this section for restrictions P Re use of branch piping is not allowed P Branch piping L2 L7 can be re used but standard pipe size only Selection of piping material P Construction material phosphoric acid deoxidized seamless copper for refrig...

Page 89: ...using the standard pipe size may result in capacity decrease It is up to the installer to judge on this phenomenon carefully in function of the complete installation Refrigerant pipe size Gas pipe Model Size down Standard size Size up RZQ71B7V3B φ 12 7 φ 15 9 RZQ100 125B7V3B φ 19 1 Liquid pipe Model Size down Standard size Size up RZQ71 125B7V3B φ 6 4 φ 9 5 φ 12 7 ...

Page 90: ...0 m 15 m standard 50 m 70 m 50 m 70 m 50 m 70 m size up 25 m 35 m 35 m 45 m 35 m 45 m Maximum total one way piping length Twin L1 L2 L3 50 m 50 m 50 m Triple L1 L2 L3 L4 Double twin L1 L2 L3 L4 L5 L6 L7 Maximum branch piping length Twin L2 Double twin L2 L4 20 m Maximum difference between branch lengths Twin L2 L3 10 m 10 m 10 m Triple L2 L4 Double twin L2 L3 L4 L5 L6 L7 L2 L4 L3 L7 Maximum heigth...

Page 91: ...rst screw the nut 3 or 4 turns by hand Coat the indicated surfaces using ether or ester oil P After completing the installation carry out an inspection of the piping connections by pressure test using nitrogen Piping size Flare nut tightening torque A dimensions for processing flares mm Flare shape Ø 6 4 14 2 17 2 N m 144 176 kgf cm 8 7 9 1 Ø 9 5 32 7 39 9 N m 333 407 kgf cm 12 8 13 2 Ø 12 7 49 5 ...

Page 92: ...Functional Diagrams ESIE04 01 1 70 Part 1 System Outline 3 1 1 4 5 ...

Page 93: ...e only completely liquefied refrigerant is sent to the expan sion valve It is also used as a container in which surplus refrigerant is stored 10 Check valve with service port The check valve allows you to connect a gauge 11 Low pressure switch The low pressure switch stops the operation of the unit when the pressure becomes abnormally low 12 High pressure switch The high pressure switch stops the ...

Page 94: ...ESIE04 01 1 72 Part 1 System Outline ...

Page 95: ...he following switch box layouts Indoor units This chapter contains the following switch box layouts Switch box layout See page 5 2 RZQ71B7V3B 1 74 5 3 RZQ100B7V3B 1 75 PCB layout See page 5 4 FCQ35B7V1 FCQ71B7V3B 1 76 5 5 FCQ100 125B7V3B 1 77 5 6 FFQ35 60BV1B 1 78 5 7 FBQ35B7V1 FBQ125B7V3B 1 79 5 8 FDQ125B7V3B 1 80 5 9 FHQ35BUV1 FHQ125BUV1B 1 81 5 10 FUQ71 125BUV1B 1 82 5 11 FAQ71BUV1B 1 83 5 12 F...

Page 96: ...4 01 1 74 Part 1 System Outline 3 1 1 4 5 5 2 RZQ71B7V3B The illustration below shows the switch box layout A1P A2P X1M Item Description A1P Printed circuit board control A2P Printed circuit board inverter X1M Terminal strip ...

Page 97: ...ayout Part 1 System Outline 1 75 3 1 4 5 5 3 RZQ100B7V3B The illustration below shows the switch box layout A1P A2P X1M Item Description A1P Printed circuit board control A2P Printed circuit board inverter X1M Terminal strip ...

Page 98: ... 5 4 FCQ35B7V1 FCQ71B7V3B The illustration below shows the switch box layout T1R PCB C1R X1M X2M Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 99: ... 5 5 5 FCQ100 125B7V3B The illustration below shows the switch box layout X2M X1M C1R PCB T1R Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 100: ... 5 5 6 FFQ35 60BV1B The illustration below shows the switch box layout X17A T1R C1R X2M PCB X1M Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 101: ...5 7 FBQ35B7V1 FBQ125B7V3B The illustration below shows the switch box layout PCB C1R X2M T1R X1M Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 102: ...1 4 5 5 8 FDQ125B7V3B The illustration below shows the switch box layout PCB C1R X1M T1R X2M Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 103: ...5 9 FHQ35BUV1 FHQ125BUV1B The illustration below shows the switch box layout C1R PCB X1M X2M T1R Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 104: ...4 5 5 10 FUQ71 125BUV1B The illustration below shows the switch box layout C1R PCB T1R X1M X2M Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 105: ...m Outline 1 83 3 1 4 5 5 11 FAQ71BUV1B The illustration below shows the switch box layout X2M PCB X1M Item Description PCB Printed circuit board X1M Terminal strip for remote control P1 P2 F1 F2 T1 T2 X2M Terminal strip interconnection wiring ...

Page 106: ... 1 1 4 5 5 12 FAQ100BUV1B The illustration below shows the switch box layout PCB X1M X2M Item Description PCB Printed circuit board T1R Transformer C1R Fan motor capacitor X1M Terminal strip for remote control P1 P2 X2M Terminal strip interconnection wiring ...

Page 107: ...ng wiring diagrams Indoor units This chapter contains the following wiring diagrams Wiring diagram See page 6 2 RZQ71B7V3B 1 86 6 3 RZQ100 125B7V3B 1 87 Wiring diagram See page 6 4 FCQ35 60B7V1 1 88 6 5 FCQ71 125B7V3B 1 89 6 6 FFQ35 60BV1B 1 90 6 7 FBQ35 60B7V1 1 91 6 8 FBQ71B7V3B 1 92 6 9 FBQ100 125B7V3B 1 93 6 10 FDQ125B7V3B 1 94 6 11 FHQ35 60BUV1 1 95 6 12 FHQ71 125BUV1B 1 96 6 13 FUQ71 125BUV1...

Page 108: ...Wiring Diagrams ESIE04 01 1 86 Part 1 System Outline 3 1 1 4 5 6 2 RZQ71B7V3B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 109: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 87 3 1 4 5 6 3 RZQ100 125B7V3B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 110: ...Wiring Diagrams ESIE04 01 1 88 Part 1 System Outline 3 1 1 4 5 6 4 FCQ35 60B7V1 Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 111: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 89 3 1 4 5 6 5 FCQ71 125B7V3B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 112: ...Wiring Diagrams ESIE04 01 1 90 Part 1 System Outline 3 1 1 4 5 6 6 FFQ35 60BV1B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 113: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 91 3 1 4 5 6 7 FBQ35 60B7V1 Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 114: ...Wiring Diagrams ESIE04 01 1 92 Part 1 System Outline 3 1 1 4 5 6 8 FBQ71B7V3B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 115: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 93 3 1 4 5 6 9 FBQ100 125B7V3B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 116: ...Wiring Diagrams ESIE04 01 1 94 Part 1 System Outline 3 1 1 4 5 6 10 FDQ125B7V3B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 117: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 95 3 1 4 5 6 11 FHQ35 60BUV1 Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 118: ...Wiring Diagrams ESIE04 01 1 96 Part 1 System Outline 3 1 1 4 5 6 12 FHQ71 125BUV1B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 119: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 97 3 1 4 5 6 13 FUQ71 125BUV1B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 120: ...Wiring Diagrams ESIE04 01 1 98 Part 1 System Outline 3 1 1 4 5 6 14 FAQ71BUV1B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 121: ...ESIE04 01 Wiring Diagrams Part 1 System Outline 1 99 3 1 4 5 6 15 FAQ100BUV1B Wiring diagram The illustration below shows the wiring diagram of the unit ...

Page 122: ...Wiring Diagrams ESIE04 01 1 100 Part 1 System Outline 3 1 1 4 5 ...

Page 123: ...s This chapter contains the following PCB layouts Indoor units This chapter contains the following PCB layouts PCB layout See page 7 2 RZQ71B7V3B 1 102 7 3 RZQ100B7V3B 1 104 PCB layout See page 7 4 FCQ35 60B7V1 1 106 7 5 FCQ71 125B7V3B 1 107 7 6 FFQ35 60BV1B 1 108 7 7 FBQ35 60B7V1 1 109 7 8 FBQ100 125B7V3B 1 110 7 9 FDQ125B7V3B 1 111 7 10 FHQ35 60BUV1 1 112 7 11 FHQ71 125BUV1B 1 113 7 12 FUQ71 125...

Page 124: ...20A X6A X12A X77A X22A X1A X3A X26A Connector Connected to Description X1A X1M Terminal strip connector X3A X205A on inverter PCB X6A For optional PCB KRP58M51 X12A Y1E Expansion valve X17A R3T Discharge thermistor X18A R4T Suction thermistor X19A R2T Coil thermistor X20A R1T Air thermistor X22A Y1S 4 way valve X26A Connector for spare part adaptor X64A S1NPL Low pressure sensor X77A For optional ...

Page 125: ... below shows the PCB connectors Connectors The table below describes the PCB connectors X60A X205A X201A X206A X207A Connector Connected to Description X60A S1PH High pressure switch X201A M1C Compressor motor X205A X3A on control PCB X206A M1F Fan motor X207A R5T Power module thermistor ...

Page 126: ... X25A X22A X26A Connector Connected to Description X1A X1M Terminal strip connector X3A X205A on inverter PCB X6A For optional PCB KRP58M51 X12A Y1E Expansion valve X17A R3T Discharge thermistor X18A R4T Suction thermistor X19A R2T Coil thermistor X20A R1T Air thermistor X22A Y1S 4 way valve X25A J1HC Crankcase heater X26A Connector for spare part adaptor X28A Y2S Solenoid valve X64A S1NPL Low pre...

Page 127: ...llustration below shows the PCB connectors Connectors The table below describes the PCB connectors X207A X205A X206A X60A Connector Connected to Description X60A S1PH High pressure switch U V W N M1C Compressor motor X205A X3A on control PCB X206A M1F Fan motor X207A M2F Fan motor ...

Page 128: ...ary side X15A 33H Float switch X17A R3T Coil thermistor X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M2F Fan motor power supply X24A X2A on A3P X24A is connected when the wireless remote control is used X25A M3P Drain pump motor X27A X2M Power supply communication X33A X1A on KRP1B Connector for wiring adaptor KRP1B X35A X1A on KRP4 Connector to group control adaptor power supply 1...

Page 129: ...nsformer primary side X15A S1L Float switch X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M2F Fan motor power supply X24A X2A on A3P X24A is connected when the wireless remote control is used X25A M3P Drain pump motor X27A X2M Power supply communication X33A X1A on KRP1B Connector for wiring adaptor KRP1B X35A X1A on KRP4 Connector to group control adaptor power supply 16VDC for opt...

Page 130: ...1L Float switch X17A R3T Coil thermistor gas Not used on 71 125 class X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M1F Fan motor power supply X24A X2A on A3P X24A is connected when the wireless remote control is used X25A M1P Drain pump motor X27A X2M Power supply communication X33A X1A on KRP1B Connector for wiring adaptor KRP1B X35A X1A on KRP4 Connector to group control adaptor ...

Page 131: ...mer secondary side X11A T1R Transformer primary side X15A 33H Float switch X17A R3T Coil thermistor X18A R2T Coil thermistor liquid X19A R1T Air thermistor X21A M1F Fan motor power supply X25A M1P Drain pump motor X27A X2M Power supply communication X33A X1A on KRP1B Connector for wiring adaptor KRP1B X35A X1A on KRP4 Connector to group control adaptor power supply 16VDC for optional PCB KRP4 X40A...

Page 132: ...T1R Transformer secondary side X11A T1R Transformer primary side X15A S1L Float switch X18A R2T Coil thermistor liquid X19A R1T Air thermistor X21A M1F Fan motor power supply X25A M1P Drain pump motor X27A X2M Power supply communication X33A X1A on KRP1B Connector for wiring adaptor KRP1B X35A X1A on KRP4 Connector to group control adaptor power supply 16VDC for optional PCB KRP4 X40A Connector fo...

Page 133: ...P2 X10A T1R Transformer secondary side X11A T1R Transformer primary side X18A R2T Coil thermistor liquid X19A R1T Air thermistor X21A K1F Magnetic contactor of fan motor X27A X2M Power supply communication X31A A3P PCB X33A X1A on KRP1B Connector for wiring adaptor KRP1B X35A X1A on KRP4 Connector to group control adaptor power supply 16VDC for optional PCB KRP4 X40A Connector for remote ON OFF Fo...

Page 134: ...he jumper connector of X15A and carry out the addi tional wiring for float switch and drain pump X17A R3T Coil thermistor gas Not used on 71 125 class X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M1F Fan motor power supply X24A X2A on A3P X24A is connected when the wireless remote control is used X25A Drain pump option X26A M1F Fan motor feedback signal X27A X2M Power supply commun...

Page 135: ...he drain pump remove the jumper connector of X15A and carry out the addi tional wiring for float switch and drain pump X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M1F Fan motor power supply X24A X2A on A2P X24A is connected when the wireless remote control is used X25A Drain pump option X26A M1F Fan motor feedback signal X27A X2M Power supply communication X29A M1S Swing flap moto...

Page 136: ... secondary side X11A T1R Transformer primary side X14A S1Q Limit switch swing flap X15A S1L Float switch X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M1F Fan motor power supply X24A X2A on A3P X24A is connected when the wireless remote control is used X25A M1P Drain pump motor X27A X2M Power supply communication X29A M1S Swing flap motor X35A X1A on KRP4 Connector to group control ...

Page 137: ...A X15A X35A X24A Connector Connected to Description X15A Connector float switch X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M1F Fan motor power supply X24A X2A on A2P Wireless remote controller connector X27A X2M Power supply communication X30A X1M Terminal strip for P1 P2 X35A X1A on KRP4 Connector to group control adaptor power supply 16 VDC for optional PCB KRP4 X36A M1S Swing ...

Page 138: ...ransformer PCB primary side X14A S1Q Limit switch swing flap X15A Connector float switch X18A R2T Coil thermistor liquid X19A R1T Air thermistor X20A M1F Fan motor power supply X24A X2A on A3P X24A is connected when the wireless remote control is used X25A M1P Drain pump motor X26A M1F Fan motor feedback signal X27A X2M Power supply communication X29A M1S Swing flap motor X35A X1A on KRP4 Connecto...

Page 139: ...tion on the functions used to control the system Understanding these functions is vital when diagnosing a malfunction that is related to the functional control Overview This part contains the following chapters Chapter See page 1 General Functionality 2 3 2 Indoor Unit Functional Concept 2 25 3 Outdoor Unit Functional Concept 2 35 ...

Page 140: ...ESIE04 01 2 2 Part 2 Functional Description 3 1 2 5 ...

Page 141: ...view This chapter contains the following topics Topic See page 1 2 Functions of Thermistors 2 4 1 3 Forced Operating Mode Emergency Operation 2 6 1 4 Outdoor Unit Identification Function 2 8 1 5 Simulated Operation Function 2 9 1 6 Restart Standby 2 10 1 7 Automatic Restart 2 11 1 8 Using Conditions for Remote Controller Thermostat 2 12 1 9 Forced Thermostat OFF 2 13 1 10 Test run control 2 14 1 1...

Page 142: ...n 1 Indoor heat exchanger R2T Cooling P Compressor frequency control target Te P Inverter current protection control P Freeze up control Heating P Compressor frequency control target Tc P Inverter current protection control P Hot start control P Peak cut off 2 Indoor air return R1T Cooling P Thermostat control P PMV control P General frequency control Heating P Thermostat control P PMV control P G...

Page 143: ...ntrol RZQ71 5 Discharge pipe R3T Cooling P Discharge superheat control P Expansion valve control P Crankcase heater preheating control Heating P Expansion valve control P Crankcase heater preheating control 6 Suction pipe R4T Cooling P Expansion valve control SH control Heating P Expansion valve control SH control P Suction pipe superheat protection control 7 Inverter power module R5T Cooling P Ou...

Page 144: ...eration by changing the emergency switch back to normal while the power is OFF Emergency operation Below table explains what will happen when the switch is set to emergency How to set Emergency Operation To set emergency operation proceed as follows If Then P R C is defective P Indoor PCB is defective P Outdoor PCB is defective Forced operating mode can be used to go to cooling or heat ing In forc...

Page 145: ...s once every hour P Emergency operation can not be carried out when the PCB board itself is defective P Be sure to set the emergency switch on both the outdoor and indoor unit P The unit will not regulate the temperature during emergency operation P Change the position of the emergency switch only when the power is turned off 3 Switch ON the emergency switch on the outdoor PCB 4 Set the emergency ...

Page 146: ...ting mode has to be set in function of the type of connected outdoor unit c o or h p Operating modes The possible operating modes are Used input The outdoor unit identification function uses the following inputs TC Transmission circuit RC Receiving circuit Outdoor unit Operating modes h p P Fan P Cooling P Dry keep P Heating c o P Fan P Cooling P Dry keep Input Connection on indoor PCB Connection ...

Page 147: ...the remote controller Fin thermistor malfunction is only displayed when pressing the Inspection button on the remote controller Sensors P Outside temperature thermistor P Outdoor heat exchanger thermistor P Fin thermistor P Discharge pipe thermistor P Indoor unit air suction thermistor P Indoor heat exchanger thermistor Remark Simulated operation will not be conducted in case the low pressure sens...

Page 148: ...d OFF and allow pressure equalization forced thermostat OFF will be conducted for 3 minutes after compressor stopping compressor guard timer Graph Thermostat OFF Compressor Electronic expansion valve Oudoor unit fan ON ON OFF OFF OFF Restart standby complete Residual operation For 3 minutes Moves to Stop or Starting control after completion of Restart standby ...

Page 149: ...he remote control s ON OFF switch is still ON the automatic restart function automatically starts the indoor fan immediately and the outdoor unit fan starts automatically 3 minutes after the power supply is turned back ON P Do not start stop the unit by disconnecting the power supply Stop the unit by stop commando from the remote controller or optional controller before disconnecting the power sup...

Page 150: ...tat is not used Cooling The diagram below shows the operation range of the set temperature air suction temperature combination in cooling operation Heating The diagram below shows the operation range of the set temperature air suction temperature combination in heating operation Condition The remote controller thermostat is not used when 1 The remote controller thermostat malfunctions 2 Group cont...

Page 151: ...changer from freezing in cooling operation when one of the below conditions is applicable P Indoor unit heat exchanger temperature 5 C for 1 minute continuously P Indoor unit heat exchanger temperature 1 C for 40 minutes accumulated Condition 2 heating Thermostat off due to high outdoor temperature When the outside temperature is 30 CDB in heating mode the unit will conduct a forced thermostat off...

Page 152: ...n code if required P If the remote controller shows E3 E4 or L8 as an error code there is possibility that either the stop valve is closed or the air flow outlet is obstructed P Check the inter unit branch wiring connection 1 2 3 wiring when the error code U4 or UF is displayed on the remote controller P This Test Run Control function is only performed after first power on at installation or after...

Page 153: ...ed out during operation because a certain pressure difference is required to move the internal cylinder Method The table below describes the 4 way valve control operation Time chart The time chart below illustrates the 4 way valve control When Then the 4 way valve connects the outlet of the compressor with Cooling Outdoor heat exchanger Heating Indoor heat exchanger In The 4 way valve is Heating e...

Page 154: ...e of this function is to collect the refrigerant in the liquid receiver and outdoor heat exchanger in order to prevent liquid refrigerant from remaining in the indoor heat exchanger Parameters Graph Ending condition P 30 seconds have elapsed since start of residual operation OR P LP 1 bar in cooling P LP 0 2 bar in heating RZQ71B RZQ100 125B Compressor 38 Hz 41 HZ Expansion valve 85 to 0 pulses af...

Page 155: ...d Be sure not to operate the unit with closed stop valves or the compressor may brake down Procedure Precautions 1 Start Fan only operation from the remote controller Confirm that both the liquid and gas stop valves are open 2 Push the pump down button BS1 on the outdoor PCB Compressor and outdoor fan will start automatically 3 Once the operation stops after 3 5 min utes close the liquid gas stop ...

Page 156: ...e saturated temperature Te is within the defrost requesting area P Outdoor unit heat exchanger area temperature Tb is within the defrost requesting area Defrost prohibiting area Defrost permitting area Evaporating temperature Te C or Outdoor unit heat exchanger temperature Tb C When slightly quick defrost starting is set Factory setting When slightly slow defrost starting is set When slightly quic...

Page 157: ...exchanger temperature 10 C P High pressure 24 5 bar calculated from LP inv frequency and PI P 10 minutes have elapsed since start of defrost operation RZQ71 RZQ100 125 A Hz 162 Hz 174 Hz B Hz 122 Hz 164 Hz C Hz 48 Hz 72 Hz Defrosting start Defrosting complete Previous control Compressor 4 way valve Motorized valve Outdoor unit fan Indoor fan ON 150 pls ON ON 480 pls A Hz B Hz C Hz ON 0 pls 15 seco...

Page 158: ...tting Freeze Prevention stop conditions Freeze prevention stop decided by the indoor unit factory setting P Indoor coil temperature 7 C for 10 minutes continuous Parameters Reference Please refer to Outdoor Field Settings in Part 4 Commissioning and Test Run for details on possible use of EDP room settings in case of low latent heat applications See page 4 23 P Indoor coil temperature 1 C for 40 m...

Page 159: ...vel Refer to ISO 7730 for details Function An optimized indoor temperature will be calculated using the following inputs P Outdoor air temperature P Indoor air temperature P Remote controller set temperature In practice the set point will be moved with 1 or 2 degrees whenever the conditions change This will result in a combination of power saving and increased comfort level PMV control can be disa...

Page 160: ...ion will be activated in order to avoid refrigerant from dissolving in the compressor oil Trigger conditions Starting conditions P or P T2 Discharge pipe temperature 20 C P Ta Outside temperature 20 C P Power supply ON to First operation P 60 minutes or more elapsed after compressor stop Ending conditions or P T2 Discharge pipe temperature 23 C P Ta Outside temperature 23 C P Thermostat ON confirm...

Page 161: ...8 Crankcase Heater Control Applicable units RZQ100 125 Outline After the compressor has been turned off the crankcase heater control will be activated in order to avoid refrigerant from dissolving in the compressor oil Trigger conditions ON OFF Discharge pipe temperature 70 C 75 C ...

Page 162: ...General Functionality ESIE04 01 2 24 Part 2 Functional Description 3 1 2 4 5 ...

Page 163: ... details about the various functions that are programmed for the Sky Air R410A inverter indoor units Overview This chapter contains the following topics Topic See page 2 2 Thermostat Control 2 26 2 3 Drain Pump Control 2 27 2 4 Condensation Avoidance Control 2 29 2 5 Draft Avoidance Control 1 2 30 2 6 Draft Avoidance Control 2 2 31 2 7 Fan and Flap Operations 2 32 2 8 Indoor unit fan control 2 33 ...

Page 164: ...enting thermostat OFF conditions The thermostat control prevents the thermostat from turning OFF in the following conditions P Initial operation for the first 2 5 minutes or P Defrosting or P Forced operating mode Remark The thermostat control will be changed when using field settings for low humidity applications setting 16 26 2 03 16 26 2 04 See Part 4 Commissioning and Test Run for details Ther...

Page 165: ...rting and turned OFF 5 minutes after the compressor has stopped residual operation Float switch activation during thermostat OFF When an abnormal drain level is detected in the drain pan the float switch opens 1 The thermostat stays forced OFF 2 The drain pump starts to operate for minimum 10 minutes even if abnormality is solved within the 10 minutes 3 If the float switch closes again within 80 s...

Page 166: ...or minimum 10 minutes even if abnormality is solved within the 10 minutes 3 If the float switch closes again within 80 seconds cooling operation can restart within the 10 minutes recovery period Used inputs Float switch Water level abnormality ON OFF Abnormal Normal 5 min 5 min 5 s ON OFF Normal Compressor Drain pump Error processing Input Connection on indoor PCB Connection on outdoor PCB Float s...

Page 167: ... in the following operating modes P Cooling automatic P Dry keep Method To avoid condensation on the swing flap the condensation avoidance control is activated Stage Description 1 The fan operates in cooling mode with the blade in downward position set on the remote control 2 After 30 min the blade moves to a horizontal position 3 After 1 h operation in horizontal position the blade moves back to ...

Page 168: ...ontrol 1 uses the following inputs When the flap starts to move there can be a draft The fan speed decreases to LL speed but it takes some time because of its inertia Fan Flap Thermostat Setting LL Setting Po0 ON OFF Flap motor starts to drive the flap 20 s Flap moves from setting position to Po0 Po0 When the flap starts to move there can be a draft The fan speed decreases to LL speed but it takes...

Page 169: ...t avoidance control 2 is activated when P Hot start is finished or P Cold air prevention control is finished Time chart If the fan speed is set to H the fan turns at low speed for a certain amount of time Used input Draft avoidance control 2 uses the following inputs Fan Flap Hot start finished Setting OFF LL L H Po0 T T 24 s FCQ T 5s Input Connection on indoor PCB Connection on outdoor PCB Limit ...

Page 170: ...w direction setting Set position Set position Set position Stop Error Swing operation OFF Horizontal Downward Airflow direction setting Set position Downward Freeze preven tion Swing operation OFF Horizontal Horizontal Swing Airflow direction setting Set position Set position Set position Function In Fan Flap FCQ and FHQ Flap FAQ Remote control indication Hot start after defrost Swing operation OF...

Page 171: ...wn operation During this pump down operation the indoor fan will keep on operating Purpose P Cooling Minimize the remaining refrigerant amount in indoor unit heat exchanger P Heating Lower the high pressure by avoiding high temperature build up around the indoor unit heat exchanger During compressor stop Before compressor startup Indoor fan tap Indoor cooling Automatic cooling Thermostat OFF L Rem...

Page 172: ... OFF Heating operation is turend on with remote controller Indoor unit fan LL tap Condition A is met Indoor unit fan L tap Condition B is met Indoor unit fan M tap Continuing L tap on indoor unit without M tap equipped Condition C is met Indoor unit fan Set fan speed Condition A Condition B Condition C Indoor unit h e temp 34 C O O O Indoor unit h e temp indoor suction air temp 17 C 12 C if outsid...

Page 173: ...roduction This chapter will explain more details about the various functions that are programmed for the sky air R410A inverter outdoor units Overview This chapter contains the following topics Topic See page 3 2 Function Outline 2 36 3 3 Frequency Regulating Functions 2 39 3 4 Expansion Valve Regulating Functions 2 55 3 5 Outdoor Unit Fan Speed Control 2 59 ...

Page 174: ...onal Description 3 1 2 4 5 3 2 Function Outline Introduction This chapter will show an overview of all applicable functions in cooling and heating mode Content Topic See page 3 2 1 Function Outline in Cooling Mode 2 37 3 2 2 Function Outline in Heating Mode 2 38 ...

Page 175: ...zed valve PI control PMV control Low pressure protection control High pressure protection control Discharge pipe temperature protection control Inverter current protection control Inverter fin temperature protection control Overall current protection control Low outdoor temperature cooling control Simulated operation Normal control Oil recovery operation starting judgement Oil recovery operation O...

Page 176: ...on control Heating overload control Discharge pipe temperature protection control Inverter current protection control Inverter fin temperature protection control Overall current protection control Suction pipe superheat degree protection control Simulated operation Normal control Oil recovery operation starting judgement Oil recovery operation Oil recovery operation ending judgement Defrosting con...

Page 177: ...Content Topic See page 3 3 1 Starting Frequency Control 2 40 3 3 2 General Frequency Control 2 43 3 3 3 Low Pressure Protection Control 2 45 3 3 4 High Pressure Protection Control 2 46 3 3 5 Discharge Pipe Temperature Control 2 47 3 3 6 Suction Pipe Superheat Protection Control Heating Mode 2 48 3 3 7 Inverter Current Protection Control 2 49 3 3 8 Input Current Control 2 50 3 3 9 Inverter Cooling ...

Page 178: ...arting control time is 2 3 minutes The maximum starting frequency control time is limited to 10 minutes During compressor start up a pressure difference will be build up in order to have sufficient pressure difference for the 4 way valve to change over Graph Ending condition The starting control will be terminated when the low pressure value 6 bar or when the maximum starting time of 10 minutes ha...

Page 179: ... before compressor start Pressure equalizing start Pressure equalizing complete Starting control complete Starting control RZQ71 73 Hz RZQ100 125 107 Hz RZQ71 480 pls RZQ100 125 65 pls 15s OFF ON OFF ON Ta 40 C OFF 1 min Max 10 min Ta 40 C Compressor Motorized valve 4 way valve Previously OFF Previously ON Outdoor unit fan ...

Page 180: ...eequalizing control before compressor start Pressure equalizing start Pressure equalizing complete Starting control complete Starting control RZQ71 73 Hz RZQ100 125 107 Hz RZQ71 480 pls RZQ100 125 65 pls 15s ON OFF ON ON Ta 26 C OFF Ta 26 C Motorized valve 4 way valve Previously ON Previously OFF Outdoor unit fan ...

Page 181: ...20 seconds interval may be decreased so a quicker change is possible Note When other control functions are activated e g discharge pipe control they can change the compressor frequency using other inputs than the ones normally being used by the General frequency control function Cooling In cooling the target operation frequency will be determined by the indoor t and the evaporating temperature t c...

Page 182: ...hat is programmed in the unit s memory Step No Compressor operation frequency RZQ71B RZQ100 125B 1 38Hz 41Hz 2 41Hz 44Hz 3 44Hz 48Hz 4 48Hz 52Hz 5 52Hz 57Hz 6 57Hz 62Hz 7 62Hz 67Hz 8 67Hz 73Hz 9 73Hz 78Hz 10 79Hz 84Hz 11 85Hz 90Hz 12 91Hz 94Hz 13 97Hz 98Hz 14 103Hz 102Hz 15 109Hz 107Hz 16 116Hz 112Hz 17 122Hz 117Hz 18 128Hz 123Hz 19 134Hz 131Hz 20 141Hz 139Hz 21 148Hz 147Hz 22 155Hz 155Hz 23 162Hz...

Page 183: ...mit A Hz Copmressor upper limit frequency B Hz Compressor upper limit frequency C Hz Compressor upper limit frequency C Hz Compressor stop O Hz Malfunction stop E4 indication Within 5 minutes after starting Within 10 minutes after defrosting OR Lp 0 15 Mpa Lp 0 59 Mpa 30 sec elapsed 10 times or less stopping in 200 minutes LP 0 1 MPa continues for 5 minutes 10 times or less stopping in 200 minutes...

Page 184: ...tion OR Hp 3 53 MPa 15 times or less stop ping in 200 minutes Normal operation Compressor operation frequency B Hz Compressor stop Malfunction stop E3 indication Malfunction stop E3 indication Compressor stop Compressor operation frequency A Hz Compressor operation frequency 1 step 10 sec Compressor operation frequency 1 step 1 min Compressor operation frequency 1 step 5 min Hp 3 58 MPa Hp 3 43 MP...

Page 185: ...OR Td B C Compressor upper limit frequency 1 step 20 sec Compressor upper limit frequency 1 step 1 min Compressor upper limit frequency 79 Hz RZQ71 62 Hz RZQ100 125 Compressor stop Malfunction stop F3 indication 10 times or less stopping in 200 minutes Td B C Td A C Upper limit frequency Maximum frequency Td B C 5 min elapsed Td A C Td C C 300 sec Td E C continues for G minutes Td F C Stopped 11 t...

Page 186: ... in the outdoor unit heat exchanger the upper limit frequency will be decreased Flow chart Normal operation Lowering upper limit frequency for 1 step every 20 seconds Raising upper limit frequency for 1 step every 20 seconds Suction SH 12 C Suction SH 10 C EV opening degree 480pls Suction SH 12 C Suction SH 10 C EV opening degree 480pls Suction SH 10 C EV opening degree 450pls Suction SH 8 C Sucti...

Page 187: ...tion Compressor frequency 1 step 2 min Inverter current step down current Inverter upper limit frequency Maximum frequency The condition of Inverter current step down current continues for 2 minutes RZQ71B RZQ100 125B P A 11 7 A 21 A Q A 12 9 A 23 A P Outdoor unit heat exchanger temperature Indoor unit heat exchanger temperature P Outdoor unit heat exchanger temperature 25 C P Outdoor unit heat ex...

Page 188: ...ir temperature will determine the upper limit current value Upper limit compressor operating frequency 1 step 6 sec Normal operation Upper limit compressor operating frequency 1 step 2 min Outdoor unit current upper limit current value Outdoor unit current upper limit current value Upper limit compressor operating frequency Maximum frequency Outdoor unit current upper limit current value Outdoor u...

Page 189: ... box from overheating L4 error activation By lowering the compressor frequency the current drawn by the compressor will be reduced and as a result the temperature inside the switch box will drop Flow chart Parameters Fin Temperature B C lasts for 2 minutes Normal operation Compressor frequency 1 step 2 min Compressor frequency 1 step 6 sec Inverter fin temperature A C Inverter upper limit frequenc...

Page 190: ...mal control Upper limit step 8 Upper limit step 8 Upper limit step 7 Upper limit step 6 Upper limit step 5 Upper limit step4 Upper limit step 3 Upper limit step 2 Upper limit step 1 Upper limit step 0 Outdoor fan OFF Condition B Condition B Condition B Condition B Condition B Condition B Condition B Condition B Outdoor fan upper limit step 8 P 11bar Compression ratio 2 4 bar Condition B 90 seconds...

Page 191: ...ontrol Used indoor unit Wall mounted indoor Other than wall mounted indoor Upper limit frequency Lower limit frequency 71 109Hz 169Hz 38Hz 100 112Hz 164Hz 41Hz 125 139Hz Upper limit frequency Lower limit frequency 71 109Hz 48Hz 100 123Hz 62Hz 125 Upper limit frequency Lower limit frequency 71 109Hz 62Hz 100 123Hz 62Hz 125 Normal operation Outdoor unit fan 1 step 30 sec Outdoor unit fan 1 step 30 s...

Page 192: ...or a time period of 10 minutes Example Trigger conditions for 71 class P In cooling Compressor frequency 62 Hz for 10 minutes continuously P In heating Compressor frequency 109 Hz for 10 minutes continuously When the above conditions are fulfilled a calculation of the oil discharge amount will be executed according to the below formula Oil discharge amount inverter frequency Hz x D x time D consta...

Page 193: ...nsion Valve Regulating Functions Introduction This chapter will explain the functions that are used to control the expansion valve opening Content Topic See page 3 4 1 Expansion Valve Control at Startup 2 56 3 4 2 General Expansion Valve Control 2 57 3 4 3 Discharge Pipe Temperature Control 2 58 ...

Page 194: ... will not be stable Graph Expansion valve opening during pressure equalization On RZQ71 units using double swing compressor the expansion valve will be fully opened to 480 pulses for pressure equalisation before compressor start up Just before compressor start up the expansion valve opening will be set to 65 pulses same as for the 100 125 class Ending condition The starting control will be termina...

Page 195: ... case the discharge superheat value decreases The target heat exchanger outlet superheat value can be decreased in case the discharge superheat value increases Control During General expansion valve control 2 parameters will be used to control the actual expansion valve opening degree 1 Target superheat amount When the target heat exchanger outlet superheat actual heat exchanger outlet superheat t...

Page 196: ...ntrol Outline The expansion valve opening will be controlled in order to avoid abnormal high compressor discharge temperatures see also compressor operating frequency control Details RZQ71B RZQ100 125B M C 95 C 95 C N C 80 C Normal operation Expansion valve opening 5 pls 2 min when cooling 1 min when heating Td M C Td N C ...

Page 197: ... Functional Description 2 59 3 2 4 5 1 3 5 Outdoor Unit Fan Speed Control Introduction This chapter will explain how the outdoor fan speed is determined in cooling and heating operation Content Topic See page 3 5 1 Outdoor Unit Fan Speed Control 2 60 ...

Page 198: ... pressure difference between low and high pressure and compression ratio For details please refer to Pressure Difference Control Fan step table RZQ71 Fan step table RZQ100 Step Cooling Heating 0 0 0 1 200 200 2 250 250 3 300 300 4 360 360 5 430 430 6 515 515 7 620 620 8 790 720 Cooling Heating Step M1F M2F M1F M2F 0 0 0 0 0 1 250 0 250 0 2 400 0 285 250 3 285 250 335 300 4 360 325 395 360 5 445 41...

Page 199: ...ep table RZQ125 Reference See also P Pressure Difference Control on page 2 52 P Defrost Operation on page 2 18 Cooling Heating Step M1F M2F M1F M2F 0 0 0 0 0 1 250 0 250 0 2 400 0 285 250 3 285 250 335 300 4 360 325 395 360 5 445 410 470 435 6 545 510 560 525 7 660 625 660 625 8 850 815 835 800 ...

Page 200: ...Outdoor Unit Functional Concept ESIE04 01 2 62 Part 2 Functional Description 3 1 2 4 5 ...

Page 201: ...leshooting What is in this part This part contains the following chapters Chapter See page 1 Troubleshooting 3 3 2 Error Codes Indoor Units 3 39 3 Error Codes Outdoor Units 3 53 4 Error Codes System Malfunctions 3 89 5 Additional Checks for Troubleshooting 3 97 ...

Page 202: ...ESIE04 01 3 2 Part 3 Troubleshooting 3 1 3 5 ...

Page 203: ... Overview This chapter contains the following topics Topic See page 1 2 General Troubleshooting Flowchart 3 4 1 3 Overview of General Problems 3 5 1 4 Procedure of Self Diagnosis by Remote Controller 3 24 1 5 Fault diagnosis by Wired Remote Controller 3 25 1 6 Fault diagnosis by Wireless Remote Controller 3 26 1 7 Overview of Error Codes 3 30 1 8 Troubleshooting by LED Indications 3 32 1 9 Trouble...

Page 204: ...e Units equipped with liquid crystal remote controllers only Operation is normal Temperature differential is 8 18 C The units runs but doesn t heat the room Measure the suction discharge temperature Is there something causing the indoor heat load to be large such as an open window or door Temperature differential discharge temperature suction temperature Operation is normal Temperature differentia...

Page 205: ...mode during heating even if remote controller is set to Low It is normal It is caused by the activation of the overload control airflow shift control 16 Flap automatically moves during cooling It is normal It is caused by the activation of the dew prevention function or ceiling soil ing prevention function 17 Indoor unit fan operates in L mode for 1 minute in microcomputer controlled dry mode even...

Page 206: ...ration switch or contact point P Faulty high pressure switch P Faulty magnetic switch for fan motor P Activation or fault of overcurrent relay for fan motor P Faulty overcurrent relay for compressor P Faulty compressor protection thermostat P Insufficient insulation in electric system P Faulty contact point of magnetic switch for compressor P Malfunction of compressor P Fefective remote controller...

Page 207: ...ormal Equipment starts operation 3 minutes later 3 min standby Diagnose based on error code on remote controller Normal Equipment starts operation 3 minutes later 3 min standby Diagnose based on error code on remote controller Check electric system Is power switch OFF or fuse for power switch blown Is operation lamp on LCD remote controller flashing Is operation switch pressed repeatedly Wireless ...

Page 208: ...operates but compressor does not Applicable Model All models of SkyAir series Method of Malfunction Detection Malfunction Decision Conditions Possible Causes P Faulty thermistor P Faulty indoor outdoor unit PCB P Faulty magnetic switch P Faulty power transistor P Faulty compressor ...

Page 209: ...ard Input to PC board Output from PC board e Output from relay or microcomputer d Output from magnetic switch or SW circuit of power transistor c Output from magnetic switch or U V W of power transistor Indoor unit fan runs at set airflow rate In cooling operation When air thermistor ambient temperature is higher than set temperature In heating operation When air thermistor ambient temperature is ...

Page 210: ...ant P Air intrudes into refrigerant system P Faulty pressure switch P Faulty magnetic switch for outdoor unit fan motor P Faulty aux relay for outdoor unit fan motor P Soiled heat exchanger of outdoor unit P There is an interfering item in air flow of outdoor unit P Malfunction of outdoor unit fan P Soiled air filter of indoor unit P Soiled heat exchanger of indoor unit P There is some interfering...

Page 211: ...t exchanger After vacuum drying charge correct amount of refrigerant Check the pressure switch Possible causes as follows Refrigerant overcharge Mixing of air in refrigerant system Faulty pressure switch Does the fan rotate Is the filter soiled NO NO Is the operation lamp of remote controller flashing Is the operation lamp of indoor unit photo sensing section flashing Is the type of remote control...

Page 212: ...tection thermostat P Overcurrent relay may act due to the following reasons Lower voltage of power supply Excess level of high pressure Insufficient size of power cable Malfunction of compressor P Compressor protection thermostat may act due to the following reasons Internal leakage of four way valve There is no difference between suction and discharge temperature Insufficient compression of compr...

Page 213: ...amount of refrigerant Then start operation again NO YES YES YES Malfunction of compressor YES YES Is the discharge side of compressor hot after unit stop Is there any temperature difference between inlet and outlet of expansion valve Is there any temperature difference between suction side and discharge side of four way valve Power supply voltage is within 10 of specified voltage Is the size of po...

Page 214: ...ay act due to the following reasons Lower voltage of power supply Excess level of high pressure Insufficient size of power cable Malfunction of compressor P Compressor protection thermostat may act due to the following reasons Internal leakage of four way valve There is no difference between suction and discharge temperature Insufficient compression of compressor Incorrect refrigerant charge leak ...

Page 215: ...low Malfunction of fan motor of outdoor unit Refer error code E7 H7 Possible causes as follows Insufficient compression of compressor Insufficient circulation of refrigerant Faulty expansion valve Gas shortage possibly generates trouble Normal Additional unit installation should be considered After vacuum drying charge correct amount of refrigerant Check each section Check each item Check each ite...

Page 216: ...P Air intrudes into refrigerant system P Faulty pressure switch P Faulty magnetic switch for outdoor unit fan motor P Faulty aux relay for outdoor unit fan motor P Soiled heat exchanger of outdoor unit P There is an interfering item in air flow of outdoor unit P Malfunction of outdoor unit fan P Soiled air filter of indoor unit P Soiled heat exchanger of indoor unit P There is some interfering ite...

Page 217: ...s the unit in defrost mode Is the operation current less than specified level Does the heat load increase after installation of the unit YES YES YES YES YES YES Incorrect selection of model Affection of sunlight Affection of excessive fresh air into room Gas shortage possibly generates trouble Clogged air filter Soiled heat exchanger Malfunction of indoor fan motor Refer error code A6 Refrigerant ...

Page 218: ...Cleaning of heat exchanger is necessary Remove the source of oil mist or dust Cleaning of air filter Check fan motor Refer error code A6 Normal Fog is generated due to defrosting operation Is white fog coming out from the unit Is the heat exchanger of indoor unit soiled Is the site dusty or with dense oil mist NO NO NO Is the airflow rate too small NO NO YES YES YES YES Is the room temperature hig...

Page 219: ...and remove parts contact Normal Operation sound of draining device Correct piping manually or attach a dead weight to pipe Normal Creak generates by shrinkage of resin parts due to temperature change Normal After vacuum drying charge correct amount of refrigerant Excess charge of refrigerant Air intrudes into refrigerant system Flushing noise due to refrigerant shortage Sound of shoo NO YES YES YE...

Page 220: ... Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Dust collected inside the indoor unit are blown out Cleaning for inside of indoor unit is necessary Dust collected inside the indoor unit are blown out Cleaning for inside of indoor unit is necessary Install air filter Does the trouble generate at the time of operation start again after...

Page 221: ...re to turn off power switch before connect or disconnect connector or parts damage may be occurred The unit is checking to confirm that remote controller is normal Indication appears for short time Turn the switch to Normal and reset power supply Check the unit based on indoor unit LED and outdoor unit LED Trouble Shooting Trouble generates just after power supply ON YES YES NO NO Is the position ...

Page 222: ...econds Remark Some functions can force the swing flap into a fixed position altough swing mode is selected on the remote controller This is not an unit error but a control function to prevent draft to the customer Before starting the troubleshooting make sure the swing flap is not forced into such a fixed position e g Hot start defrost operation thermostat OFF in heating operation or freeze preven...

Page 223: ...ly NO 220 240 VAC NO YES NO S2577 Is the limit switch s transfer connector correctly connected Turn the power supply off once and back on and check whether the swing flap motor swings when the power supply is turned back on Disconnect X14A turn the power supply off once and back on and check if the limit switch has continuity when the power supply it turned back on Turn the power supply off once a...

Page 224: ...ervice settings can be made P Forced fan ON P Air flow direction volume setting Depress Inspection Test Operation button for more than 4 seconds Following codes can be checked P Malfunction codes P Indoor model code P Outdoor model code Press Inspection Test Operation button once Press Inspection Test Operation button once Press Inspection Test Operation button once Or after 30 minutes Depress Ins...

Page 225: ...and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when inspection mode is entered The malfunction code enables you to tell what kind of malfunction caused operation to stop See page 3 30 for malfunction code and malfunction contents Inspection test button Inspection display Malfunction code Indoor unit No in which a malfunction occurs Operat...

Page 226: ...ote controller the wireless remote controller does not display the error code Instead the operation LED on the light reception section flashes Checking To find the error code proceed as follows Step Action 1 Press the INSPECTION TEST button to select inspection The equipment enters the inspection mode 0 flashes in the UNIT No display 0 INSPECTION TEST ...

Page 227: ... Press the MODE selector button The left 0 upper digit indication of the error code flashes Step Action If you hear Then 3 short beeps Follow all steps below 1 short beep Follow steps 3 and 4 Continue the operation in step 4 until you hear a con tinuous beep This continuous beep indicates that the error code is con firmed 1 continuous beep There is no abnormality UP DOWN MODE ...

Page 228: ...digit until the receiver of the remote controller starts to beep 5 Press the MODE selector button The right 0 lower digit indication of the error code flashes Step Action If you hear Then 2 short beeps The upper digit matches 1 short beep No digits match 1 continuous beep Both upper and lower digits match UP DOWN UP DOWN MODE ...

Page 229: ...change the error code lower digit until the receiver of the remote controller generates a continuous beep 7 Press the MODE button to return to normal status If you do not press any button for at least 1 min the remote controller returns automatically to normal status Step Action UP DOWN UP DOWN MODE ...

Page 230: ...ressure sensor system Check if the stop valve open E5 Compressor motor lock malfunction Compressor motor lock incorrect wiring E7 Outdoor fan motor lock or outdoor fan instantaneous overcurrent malfunction E9 Malfunction of electronic expansion valve outdoor unit F3 Discharge pipe temperature malfunction outdoor unit H3 Failure of high pressure switch outdoor unit H7 Malfunction of outdoor fan mot...

Page 231: ... gas malfunction Abnormal suction pipe temperature U2 Abnormal power supply voltage Including malfunction of K1M K2M U4 UF Failure of transmission between indoor and outdoor unit Transmission between indoor and outdoor unit is not being correctly carried out Note 1 Note 2 U5 Failure of transmission between indoor unit and remote controller Transmission between indoor and remote controller is not b...

Page 232: ...ature display 3 Operation halts due to malfunction depending on the model or condition 4 If LED B is off the transmission wiring between indoor and outdoor unit may be incorrect or disconnected Before performing the previously described troubleshooting check the transmission wiring 5 Troubleshoot by turning off the power supply for a minimum of 5 seconds turning it back on and then rechecking the ...

Page 233: ...diagnose the problem 2 Turn off the power switch After 5 seconds or more disconnect the connection wire 2 Then turn on the power switch If the HAP on the outdoor unit PCB flashes after about 10 seconds the indoor unit PCB is faulty 3 Also check for open phase Remark The error detection monitor continues to indication the previously generated error until the power switch is turned off Be sure to tu...

Page 234: ...tion Contents of Malfunction Details of Malfunction Reference Page H1P H2P Other than PC Board PC Board Out door Unit Indoor Unit Remote Controller c c Note 1 Normal to outdoor unit c w A1 Malfunction indoor unit PC board For troubleshoot ing by LED refer to p 32 3 40 c x w x c c A3 Malfunction of drain water level system 3 41 c c AF Malfunction of drain sys tem 3 44 c c A6 Indoor unit fan motor l...

Page 235: ... Malfunction of Electronic expan sion valve 3 63 F3 Discharge pipe temperature malfunction 3 65 H3 Faulty high pressure switch HPS 3 67 H7 Malfunction of outdoor fan signal 3 68 H9 Malfunction of outdoor air temperature sensor system 3 69 J3 Malfunction of discharge pipe temperature sensor system 3 69 J5 Suction pipe thermistor malfunction 3 69 J6 Malfunction of heat exchanger temperature sensor s...

Page 236: ...n Reference Page Other than PC Board PC Board Outdoor Unit Indoor Unit Remote Controller U4 or UF Transmission error between indoor and outdoor unit 3 90 U5 Transmission error between indoor and remote controller 3 92 U8 Transmission error between main remote controller and sub remote controller 3 93 UA Excessive indoor units connected to this system 3 94 UC Centralized address setting error 3 96 ...

Page 237: ...ESIE04 01 Troubleshooting Part 3 Troubleshooting 3 37 3 3 4 5 1 1 10 Overview of the Outdoor Safety Devices High pressure switch Fuse Open Close RZQ71 4 0 Mpa 0 0 15 3 0 0 15 6 3A 250V RZQ100 RZQ125 ...

Page 238: ...ermal protector Thermal fuse fan motor Abnormal Reset automatic FFQ35 60 130 C 5 C 83 C 20 C N A FCQ35 71 130 C 5 C 83 C 20 C N A FCQ100 125 140 C 5 C 45 C 15 C N A FBQ35 125 N A N A 152 C FDQ125 N A N A 160 C FHQ35 125 130 C 5 C 83 C 20 C N A FUQ71 125 130 C 5 C 83 C 20 C N A FAQ71 100 130 C 5 C 83 C 20 C N A ...

Page 239: ...shuts down when the error occurs several times This means that you have to wait until the system shuts down to be able to see the flashing LED on the front panel and the error code on the remote controller Overview This chapter contains the following topics Topic See page 2 2 Malfunctioning Indoor PCB A1 3 40 2 3 Malfunction of Drain Water Level System A3 3 41 2 4 Malfunctioning Drain System AF 3 ...

Page 240: ...ly and usually requires more voltage for erasure than the common 5 volts used in logic circuits It functions like non volatile RAM but writing to EEPROM is slower than writing to RAM Causes The possible cause is a malfunctioning indoor PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Operation HAP green HBP green No...

Page 241: ...neration The error is generated when the water level reaches its upper limit and when the float switch turns OFF Causes The possible causes are P Malfunctioning drain pump P Improper drain piping work P Drain piping clogging P Malfunctioning float switch P Malfunctioning indoor unit PCB P Malfunctioning short circuit connector X15 on PCB Operation HAP green HBP green Normal c c Malfunctioning c c ...

Page 242: ...ontinuity Yes Replace the Short circuit connector Replace the indoor unit PCB Yes No Does the drain pump work after restarting operation Yes Connect the drain pump Yes No Is the drain water level abnormally high There is a malfunction of the drain system Set to emergency and check the voltage of X25A 220 240 VAC Replace the drain pump No Yes Yes Yes Is the float switch connected to X15A Remove the...

Page 243: ...t 3 Troubleshooting 3 43 4 5 1 3 Remark If A3 is detected by a PC board which is not mounted with X15A the PC board is defective Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred ...

Page 244: ...of float switch Check to see if drain up height and horizontal pipe length exceed specifications Clogged drain water discharge system Clogged drain pump Faulty float switch Replace indoor unit PCB Check to see if drain up height and horizontal pipe length exceed specifications Check jumper connector X15A Check drain pump and drain pipe Check water drainage system Check to see if drain up height an...

Page 245: ...ESIE04 01 Error Codes Indoor Units Part 3 Troubleshooting 3 45 4 5 1 3 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred ...

Page 246: ...ED indications Error generation The error is generated when the fan rotations are not detected while the output voltage to the fan is at its maximum Causes The possible causes are P Malfunctioning indoor unit fan motor P Broken or disconnected wire P Malfunctioning contact P Malfunctioning indoor unit PCB Operation HAP green HBP green Normal c c Malfunctioning c c ...

Page 247: ...onnect connector or parts damage may be occurred Check the connections of X20A and X26A Are X20A and X26A properly connected Unplug X26A and switch the power supply on Is there about 12 VDC Check the voltage between pins 1 and 3 of X26A Connect X20A and X26A correctly Replace indoor unit PCB Check indoor unit fan motor and motor wiring Yes No Yes No ...

Page 248: ... following case In case the indoor PCB installed at the factory is for some reason changed at the installation site the capacity will not be contained in the replacement PCB To set the correct capacity for the PCB you have to connect a capacity setting adaptor with the correct capacity setting to the PCB The capacity setting for the PCB will become the capacity setting of the adaptor because the c...

Page 249: ...if the capacity setting adapter is plugged into X23A of the indoor PCB Is the capacity setting adapter plugged into X23A of the indoor unit PCB Switch the power supply off and back on again Is AJdisplayed on the remote controller Plug a capacitor setting adapter that matches the capacity of the unit into X23A Replace indoor unit PCB Yes Yes No No The malfunction was caused by a missing capacity re...

Page 250: ...ring compressor operation P Thermistor input 4 96 V or P Thermistor output 0 04 V Causes The possible causes are P Malfunctioning connector connection P Malfunctioning thermistor P Malfunctioning PCB P Broken or disconnected wire Checking thermistors See page 3 102 Error Description C4 Malfunctioning heat exchanger thermistor system C5 Malfuncioning gaspipe thermistor system C9 Malfunctioning suct...

Page 251: ...e may be occurred Check the connector connection Is it connected properly Correct the connection Check the thermistor resistance Is it normal Replace the thermistor Check the contact between thermistor and PCB Is the contact OK Correct contact Replace outdoor unit PCB No Yes No Yes Yes No C4 Indoor liquid pipe thermistor R2T C5 Gaspipe thermistor R3T C9 Air suction thermistor R1T ...

Page 252: ...n if the remote controller thermistor is malfunctioning the system can operate with the system thermistor Causes The possible causes are P Malfunctioning thermistor P Broken wire Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Operation HAP green HBP green Normal c c Malfunctioning c c Turn the power supply off once an...

Page 253: ...3 7 Malfunction of Outdoor Unit Fan Motor E7 3 62 3 8 Malfunction of Electronic Expansion Valve E9 3 63 3 9 Malfunctioning in Discharge Pipe Temperature F3 3 65 3 10 Malfunctioning HPS System H3 3 67 3 11 Malfunction of Outdoor Fan Motor Signal H7 3 68 3 12 Malfunction of Thermistor System H9 J3 J5 J6 3 69 3 13 Malfunction of Suction Pipe Pressure Sensor JC 3 70 3 14 Radiation Fin Temperature Incr...

Page 254: ... Faulty outdoor unit PC board P Instantaneous power failure Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO YES Insulation resistance 5MΩ YES NO NO Is L9 displayed YES Connect the connectors or terminals and turn on again Replace the compressor Replace the compressor Replace the outdoor unit PC board S2580 Are compr...

Page 255: ... Conditions E2PROM When E2 PROM malfunctions when turning the power supply on Supposed Causes P Faulty outdoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Problem could be caused by external factor noise etc other than malfunction YES NO Replace the control PC board S2581 Is normal reset possible Turn...

Page 256: ...itch is actuated Actuating pressure RZQ71 125 Supposed Causes P Faulty high pressure switch P Disconnection in high pressure switch harness P Faulty connection of high pressure switch connector P Clogged indoor unit suction filter in heating operation P Dirty outdoor unit heat exchanger P Faulty outdoor unit fan P Refrigerant overcharge P Stop valve is left in closed HPS settings The table below c...

Page 257: ...h pressure switch HPS NO YES Connect correctly NO YES Open the stop valve NO YES Is high pressure abnormally high YES NO YES NO Check the installation conditions Check No 5 Is the stop valve open Turn off the power supply Wait for 10 minutes after compressor stops operating then check the following Is there continuity in control and protection HPS Set the remote controller and turn on again Is the...

Page 258: ...pressure sensor P Defect of outdoor unit PC board P Stop valve is not opened Troubleshooting 1 Voltage measurement point V2791 Low pressure at stop due to malfunction is 0 15 MPa Measure the voltage VL of X64A pin No 2 3 of outdoor PC board A1P 1 Is the relationship between low voltage and VL normal Out of gas refrigerant system clogging wiring and piping wrong connection stop valve closed electro...

Page 259: ...odes Outdoor Units Part 3 Troubleshooting 3 59 3 3 4 5 1 2 Refer to Low pressure sensor check on page 3 111 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred ...

Page 260: ...mpressor and detects the position signal pattern Malfunction Decision Conditions The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but 2 times cycle when compressor motor locks When the position signal in 2 times cycle is detected Supposed Causes P Compressor lock P High differential pressure 0 5MPa or more starting P Incorrect UVWN wir...

Page 261: ...essor YES NO NO YES Is the UVWN wiring normal Does low or high pressure vary even instantaneously when restarting compressor Open the stop valve NO YES Is the stop valve open YES Replace the inverter PC board NO NO Is high differential pressure starting 0 5MPa or more Replace the compressor YES NO Check and see whether compressor is short circuited or ground YES Are inverter output voltages the sa...

Page 262: ...sed Causes P Malfunction of fan motor P The harness connector between fan motor and PC board is left in disconnected or faulty connector P Fan does not run due to foreign matters tangled P Clearing condition Operate for 5 minutes normal Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the outdoor unit fan motor ...

Page 263: ...tion pipe superheat degree and electronic expansion valve opening degree calculated by values of low pressure sensor and suction pipe temperature thermistor Malfunction Decision Conditions When the following conditions are met for 10 minutes P Suction pipe superheat degree 2 C P Minimum electronic expansion valve opening degree Supposed Causes P Faulty electronic expansion valve P Faulty solenoid ...

Page 264: ...oil Replace the outdoor unit PC board A1P NO Connect correctly Is the electronic expansion valve coil connected to outdoor unit PC board NO NO Turn the power supply off once and back on NO YES YES Replace the motorized valve coil With remote controller ON doesn t the unit operate and is E9 displayed NO Replace the main unit of solenoid valve Y2S Is there difference in temperature before and after ...

Page 265: ...perature detected by the discharge pipe temperature sensor Malfunction Decision Conditions P When the discharge pipe temperature rises to an abnormally high level P When the discharge pipe temperature rises suddenly Supposed Causes P Faulty discharge pipe thermistor P Faulty connection of discharge pipe thermistor P Insufficient refrigerant amount P Faulty compressor P Disconnection of discharge p...

Page 266: ... again Is the discharge pipe thermistor correctly connected NO YES Abnormality in refrigerant system such as gas shortage faulty compressor etc Conduct inspection Is the discharge pipe temperature high See 1 YES NO Replace the outdoor unit PC board Attach the thermistor and operate the unit again Is the discharge pipe thermistor attached to the discharge pipe NO YES 1 Temperature varies depending ...

Page 267: ...aulty connection of high pressure switch connector P Faulty outdoor unit PC board P Disconnected lead wire Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace HPS with no continuity Resistance in normal operation 10Ω or less Wait for 10 minutes after the unit stops operating then check the following Is there contin...

Page 268: ...ts damage may be occurred Is the connector of fan motor connected correctly NO YES YES Is the resistance value normal in above connector check NO Connect correctly Replace the fan motor Replace the PC board S2588 Check No 9 Check the fan motor connector Connector symbol of fan motor 0Caution for service If the outdoor fan rotates due to strong wind voltage generates in main circuit capacitor To pr...

Page 269: ...unit PC board control PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES YES Normal Connect correctly Replace the outdoor unit PC board control PC board NO Check connectors for connection Remove thermistor from outdoor unit PC board then measure the resistance using a tester H9 Malfunction of outdoor temperat...

Page 270: ...rong connection P Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to pressure sensor pressure voltage characteristics table on page 3 111 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2808 The relationship between the 1 VH and low pressure is normal see 2 when voltage is measured between X64A pin...

Page 271: ...thermistor P High outside air temperature P Insufficient cooling of inverter radiation fin P Blocked suction opening P Dirty radiation fin P Faulty outdoor unit PCB Troubleshooting Fin temperature detection values Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Detection Reset RZQ71 90 C 80 C RZQ100 125 98 C 88 C Is reset possible NO ...

Page 272: ...transistor into voltage with CT1 DC current sensor Malfunction Decision Conditions When overcurrent has run to power transistor Actuated even by instantaneous overcurrent Supposed Causes P Faulty compressor coil disconnection poor insulation P Compressor startup malfunction mechanical lock P Faulty inverter PC board P Instantaneous fluctuation of power supply voltage P Faulty compressor if bearing...

Page 273: ...drop generated Is the compressor coil disconnected or is the insulation defective NO YES Open the stop valve Is the stop valve open Turn the main power supply off and then disconnect the connection between the compressor and inverter Check the installation conditions Check the power supply voltage Continuity check in the power transistor IGBT Is the continuity normal NO Replace the inverter PC boa...

Page 274: ...d by converting the current flowing to power transistor into voltage with CT1 DC current sensor Inverter PC board detects the disorder of position signal Malfunction Decision Conditions When compressor overload except for when startup is detected Supposed Causes P Compressor overload during operation P Disconnected compressor coil P Faulty inverter P Faulty compressor if bearing is scratched ...

Page 275: ...ary current of the inverter higher than 0A see below for each phase NO Replace the inverter PC board YES NO Replace the inverter PC board YES Is the inverter output voltage generated approximately at the same increasing speed on each phase after turning on again U V V W W U When operating compressor with compressor output line disconnected the compressor stops due to malfunction after elapsed time...

Page 276: ...nverting the current flowing to power transistor into voltage with CT1 DC current sensor Inverter PC board detects the disorder of position signal Malfunction Decision Conditions When compressor overload except for when startup is detected When position signal is disordered Supposed Causes P Faulty compressor lock P Pressure differential startup P Faulty inverter P The stop valve is left in closed...

Page 277: ...e than 0 2MPa Is the secondary current of the inverter higher than 0A see below for each phase Turn the main power supply off and then disconnect the connection between the compressor and inverter NO Replace the inverter PC board YES NO Replace the inverter PC board YES Is the inverter output voltage generated approximately at the same increasing speed on each phase after turning on again U V V W ...

Page 278: ...Detection Checks and sees whether transmission between control and inverter PC board is carried out normally Malfunction Decision Conditions When the transmission is not carried out in a specified period of time or longer Supposed Causes P Incorrect transmission wiring between control and inverter PC board insufficient contact in wiring P Faulty control and inverter PC board P External factors noi...

Page 279: ...tor NO Replace the control PC board Replace the inverter PC board Check for faulty connector connection in the transmission wiring and for clamps with high tension line YES YES Is the fan motor connector connected Is the transmission wiring between the control and inverter PC board disconnected YES NO Is E7 displayed on the remote controller LC is not displayed NO YES Are connectors connecting the...

Page 280: ... main circuit capacitor built in inverter Malfunction Decision Conditions When the aforementioned voltage waveform becomes identical with the waveform of the power supply open phase Supposed Causes P Open phase P Voltage imbalance between phases P Faulty main circuit capacitor P Power unit Disconnection in diode module P Faulty outdoor unit PC board P Faulty Magnetic Relay K11R K12R P Improper mai...

Page 281: ...ther factors than open phase Field factors NO YES YES NO Open phase of power supply voltage YES NO Is the voltage imbalance between phases large NO YES Inspect the main circuit wiring YES NO Service life of capacitor Has the capacitor been used for a long time YES NO Faulty diode module open disconnected Check LED on the outdoor unit PC board Open phase Field factors Note Target 10V between phases...

Page 282: ...adiator fin temperature thermistor during the compressor stops operating Malfunction Decision Conditions When open or short circuit of the radiator fin temperature thermistor is detected during the compressor stops operating Supposed Causes P Faulty radiator fin temperature thermistor RZQ71 P Faulty outdoor unit PC board P Faulty radiator fin temperature thermistor RZQ100 125 Needs inverter PCB re...

Page 283: ...rs than malfunction Does the radiator fin temperature thermistor malfunction NO Replace the inverter PC board Is reset possible NO YES 1 This error code is displayed only when button is pushed While the normal operation still continues inverter protection cannot be actuated 2 On this unit the radiator fin temperature thermistor cannot be mantled dismantled independently Replace by inverter PC boar...

Page 284: ... made only when turning the power supply on Supposed Causes P Improper set value of E2 PROM P Improper capacity setting adaptor P Faulty outdoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Make sure that the combination of connected capacity setting adapter CN26 is correct Connect the adapter for the ...

Page 285: ...cided repeating retry When INSPECTION button on the remote controller is pushed U0 is displayed Supposed Causes P The stop valve is left in closed P Insufficient refrigerant amount P Clogged refrigerant piping system Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Collect refrigerant After vacuum drying is complete cha...

Page 286: ...upply voltage Malfunction Decision Conditions When the voltage of main circuit capacitor built in the inverter and power supply voltage drop 150 170 VAC or when the power failure of several tons of ms or longer is generated Remote controller does not decide the abnormality Supposed Causes P Drop in power supply voltage 180 V or less P Instantaneous power failure P Inverter open phase Phase T P Fau...

Page 287: ...tors Field factors Check LED on outdoor unit PC board Is the voltage insufficient Is the power supply voltage between 220 240 VAC 10 NO NO YES YES Correct the wiring Replace the inverter PC board Monitor the voltage Instantaneous voltage drop YES NO NO When the compressor is running measure the voltage between and of electrolytic capacitor C C Is the wiring correct Is the measured voltage 220 VDC ...

Page 288: ...Error Codes Outdoor Units ESIE04 01 3 88 Part 3 Troubleshooting 3 1 3 4 5 ...

Page 289: ...ller display The error code helps you to find the cause of the problem Overview This chapter contains the following topics Topic See page 4 2 Malfunction of Transmission between Indoor and Outdoor Unit U4 or UF 3 90 4 3 Malfunction of Transmission between Indoor Unit and Remote Controller U5 3 92 4 4 Malfunction of Transmission between MAIN Remote Controller and SUB Remote Controller U8 3 93 4 5 M...

Page 290: ...Ds on the indoor unit PC board are off it indicates that the transmission wiring between indoor and outdoor units may be incorrect or broken disconnected Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Does outdoor unit microcomputer normal H1P flash Is indoor outdoor transmission wire connected correctly Is H1P flashing NO YES NO NO ...

Page 291: ...r supply back on Is HAP flashing YES YES NO ON or OFF NO OFF NO Is HAP flashing YES NO Is HAP flashing Continued from previous page Is HAP on Check of outdoor unit microcom puter normal HAP YES Turn the power supply off once and then back on Failure of indoor unit PCB Failure of outdoor unit PCB or malfunction of power supply system Indoor PCB malfunction Resets normally Could be outside cause noi...

Page 292: ...eshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Set one of the remote controllers to SUB turn off the power supply temporarily then restart operation Indoor unit PCB replacement Malfunction could be produced by noise Check the surrounding area and restart operation Change to double core independent cable Failure of remote co...

Page 293: ...oller and SUB remote controller P Connection among SUB remote controllers P Malfunctioning remote controller PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Turn the SS 1 switch of one remote controller to MAIN Turn OFF the power supply and restart operation Turn OFF the power once and restart operation Replace rem...

Page 294: ...code UA Error generation The error is generated when incorrect field settings have been set for pair twin triple double twin Causes The possible causes are P Malfunctioning indoor or outdoor unit PCB P Malfunctioning power supply PCB P Indoor outdoor indoor indoor unit transmission wiring P Malfunctioning remote controller wiring ...

Page 295: ...nit used for Twin system Is the remote controller connected to more than one indoor unit NO YES Are the microcomputer normal montiors HAP of all indoor unit PCB flashing YES Are the transmission normal montiors HBP of all indoor unit PCB flashing NO Is the setting of Pair Twin Triple set correctly YES NO YES NO YES Operating normally YES YES NO NO Turn the power off once then back on and restart o...

Page 296: ...between indoor units Malfunction Decision Conditions When the microcomputer judges that the centralized address signal is duplicated Supposed Causes P Faulty centralized address setting P Faulty indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Change the setting so that the centralized address is no...

Page 297: ...g topics Topic See page 5 2 Indoor Unit Checking the Fan Motor Hall IC 3 98 5 3 Indoor Unit Checking the Power Supply Wave Form 3 99 5 4 Outdoor unit Checking the Installation Condition 3 100 5 5 Outdoor Unit Checking the Expansion Valve 3 101 5 6 Checking the Thermistors 3 102 5 7 Resistance Conversion Table Ambient Coil Fin 3 103 5 8 R3T Resistance Conversion Table Discharge Pipe Sensor 3 104 5 ...

Page 298: ...PCB 1 is properly connected 2 Make sure the power is ON and that there is no operation 3 Measure the voltage between pin 1 and 3 of S7 4 Turn the fan one rotation with your hand and measure the generated pulses 5 Proceed as follows If Then The measured voltage between pin 1 and 3 does not equal 5 V Replace the PCB 1 The generated pulses do not equal 3 pulses between pin 2 and 3 Replace the fan mot...

Page 299: ...heck the power supply wave form proceed as follows Step Action 1 Measure the power supply wave form between pin 1 and 2 of X1M for the outdoor units or between pin 1 and 2 of X2M for the indoor units 2 Check whether the power supply wave form is a sine wave 3 Check whether there is wave form disturbance near the zero cross 4 Adjust the supply voltage ...

Page 300: ...dditional Checks for Troubleshooting ESIE04 01 3 100 Part 3 Troubleshooting 3 1 3 4 5 5 4 Outdoor unit Checking the Installation Condition Checking To check the installation condition proceed as follows ...

Page 301: ...ck whether the expansion valve is producing a clicking sound 5 Check the coil current Open circuit normal short circuit 6 Check the clicking sound again If Then The expansion valve has no clicking sound Disconnect the valve connector without the clicking sound and proceed to step 5 The table below contains the reference resistance values White Grey Black Yellow Red Orange White 45 ø 45 ø Grey 45 ø...

Page 302: ...w of thermistors The table below contains an overview of the thermistors Checking To check the thermistors proceed as follows Thermistor Description Indoor R1T Suction air thermistor R2T Heat exchanger thermistor R3T Gas pipe thermistor Outdoor R1T Ambient air thermistor R2T Heat exchanger thermistor R3T Discharge pipe thermistor R4T Suction pipe thermistor R5T Power module fin thermistor Step Act...

Page 303: ...3 81 3 68 3 56 10 111 99 108 96 30 16 10 15 76 70 3 50 3 44 9 8 7 6 5 4 3 2 1 106 03 100 41 95 14 90 17 85 49 81 08 76 93 73 01 69 32 103 18 97 73 92 61 87 79 83 25 78 97 74 94 71 14 67 56 31 32 33 34 35 36 37 38 39 15 43 14 79 14 18 13 59 13 04 12 51 12 01 11 52 11 06 15 10 14 48 13 88 13 31 12 77 12 25 11 76 11 29 10 84 71 72 73 74 75 76 77 78 79 3 38 3 27 3 16 3 06 2 96 2 86 2 77 2 68 2 60 3 32...

Page 304: ...6 0 78 0 33 7 31 4 29 2 27 2 142 0 144 0 146 0 148 0 3 9 3 7 3 5 3 3 10 0 478 8 80 0 25 4 150 0 3 2 12 0 14 0 16 0 18 0 432 9 392 0 355 3 322 4 82 0 23 7 152 0 154 0 156 0 158 0 3 0 2 9 2 7 2 6 20 0 292 9 160 0 2 5 22 0 24 0 26 0 28 0 266 3 242 5 221 0 201 6 92 0 94 0 96 0 98 0 16 9 15 8 14 8 13 9 162 0 164 0 166 0 168 0 2 3 2 5 2 1 2 0 30 0 184 1 100 0 13 1 170 0 1 9 32 0 34 0 36 0 38 0 168 3 154...

Page 305: ...ection Is the piping length 5 meters or less Visual inspection Does air enter the refrigerant system Conduct refrigerant collection and vacuum dry ing and then add proper amount refrigerant Is the refrigerant overcharged Conduct refrigerant collection and vacuum dry ing and then add proper amount refrigerant Check items Possible causes Judgment Does the indoor unit fan run normally Visual inspecti...

Page 306: ...ES the check valve is caught Is the LPS normal Check continuity using a tester Is the indoor unit installed under such conditions that short circuit easily occurs Visual inspection Is the refrigerant gas short Conduct refrigerant collection and vacuum dry ing and then add proper amount refrigerant Check items Possible causes Judgment Does the outdoor unit fan run normally Visual inspection Is the ...

Page 307: ... due to adherent contamination etc Replace the expan sion valve 2 Accumulator Frosting P Choked moisture Blow a nitrogen gas and then replace the refrigerant 3 Distributor Temperature difference P Dust P Choked moisture P Reduced effective pipe diameter due to adherent contamination etc Replace the heat exchanger or distributor 4 Field piping Temperature difference P Collapsed pipe Replace the pip...

Page 308: ...tween each phase is balanced and not short circuited 5 11 3 Outdoor Unit Fan Motor Signal Line For RZQ71 125 models 1 Turn the power supply off 2 With the fan motor connector disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table Red White Black U V W Measure the resistance between each phase S2675 Measurement...

Page 309: ...e contact terminal on the harness side with the connector connected For RZQ100 125 models 6 Disconnect the connector X207A with the power supply OFF and Operation OFF 7 Is the voltage between pins 4 and 3 of X207A about 15 VDC after turning the power supply on 8 Is the voltage between pins 4 and 1 of X207A about 5 VDC 9 Connect the connector X207A with the power supply OFF and Operation OFF 10 Whe...

Page 310: ...f power transistor is 50 V or less 3 Before measuring the continuity disconnect the connection between compressor and power transistor 4 Measure the continuity in the following procedure Judgment Normal if the continuity check results in the following Power transistor on inverter PC board If there is continuity the resistance should be the same as each phase If a digital tester is used for the mea...

Page 311: ...d Black White 5V Outdoor unit PC board Microcomputer A D input Measure voltage DC here n For RZQ71 125 models S2680 V3053 Detected Pressure Output voltage VH VL High Pressure PH Low Pressure PL PH 1 38V 0 69 PL 0 57V 0 28 PH High pressure MPa PL Low pressure MPa V Voltage V PH Detected Presuure High side MPa PL Detected Presuure Low side MPa VH Output voltage High side Vdc VL Output voltage Low si...

Page 312: ...Additional Checks for Troubleshooting ESIE04 01 3 112 Part 3 Troubleshooting 3 1 3 4 5 ...

Page 313: ...ning and Test Run 4 1 4 3 4 5 4 Part 4 Commissioning and Test Run What is in this part This part contains the following chapters Chapter See page 1 Pre Test Run Checks 4 3 2 Field settings 4 9 3 Test Run and Operation Data 4 37 ...

Page 314: ...ESIE04 01 4 2 Part 4 Commissioning and Test Run 3 1 4 5 ...

Page 315: ...chapter contains the following information P Checks before test run P Test run checks P Setting the address for the receiver of the wireless remote controller P Setting the address for the wireless remote controller Overview This chapter contains the following topics Topic See page 1 2 Test Run Checks 4 4 1 3 Setting the Wireless Remote Controller 4 5 ...

Page 316: ...s Are all units securely installed P Dangerous for turning over during storm P Possible damage to pipe connections Is the earth wire installed according to the applicable local standard Dangerous if electric leakage occurs Are all air inlets and outlets of the indoor and outdoor units unobstructed P Poor cooling P Poor heating Does the drain flow out smoothly Water leakage Is piping adequately hea...

Page 317: ...rding to the table below You can find the wire less address switch attached on the PCB of the receiver and it is visible through the small opening on the back of the receiver 4 If you use a wired and a wireless remote controller for one indoor unit proceed as follows 1 Set the wired remote controller to MAIN On the remote controller 2 Set the wireless remote controller to SUB On the receiver with ...

Page 318: ... to 1 To change this setting proceed as follows Step Action 1 Hold down the FILTER RESET button and the TEST button for at least 4 s to go to field set mode The display indicates the field set mode 2 Press the FAN button to select a multiple setting A b see Multiple settings A b further in this section Each time you press the button the display switches between A and b FILTER RESET TEST FAN ...

Page 319: ... and Test Run 4 7 3 4 5 1 3 Press the UP and DOWN buttons to set the address Set the same address as the receiver 1 2 or 3 The receiver does not work with addresses 4 5 and 6 4 Press the RESERVE button to confirm the setting Step Action UP DOWN RESERVE ...

Page 320: ...he field set mode and return to the normal display Step Action UP FAN RESERVE CANCEL TIMER DOWN TEMP TIME ON OFF MODE SWING TEST C TEST Remote controller Indoor unit Setting Remote controller display Control of other air condi tioners and units No other control A Standard All items are displayed Commands other than ON OFF and temperature setting accepted 1 long beep or 3 short beeps emitted b Mult...

Page 321: ...tings with the Wireless Remote Controller 4 12 2 4 Overview of the Field Settings on the Indoor Units 4 13 2 5 Overview of the Factory Settings on the Indoor Units 4 14 2 6 Setting the Ceiling Height 4 15 2 7 Setting the Filter Counter 4 16 2 8 MAIN SUB Setting when Using Two Remote Controllers 4 17 2 9 Setting the Centralized Group No 4 18 2 10 The Field Setting Levels 4 20 2 11 Overview of the F...

Page 322: ...able 3 Operation mode icon 22 Fan speed icon 4 Ventilation mode icon 23 Defrost hotstart mode icon 5 Ventilation icon 24 Air filter cleaning time icon 6 Air cleaning icon 25 Element cleaning time icon 7 Leave home icon 26 Ventilation mode button 8 External control icon 27 Ventilation amount button 9 Change over under centralised control icon 28 Inspection test operation button 10 Day of the week i...

Page 323: ... indoor units are set at the same time Use the codes 10 to 15 to apply this group control and proceed to the next step P If you want to set the indoor units of one group individually or if you want to read out the last settings use the codes 20 to 25 which are displayed in brackets Press the TIMER SELECTION button to select the Indoor unit No for which you want to adjust the field settings 4 Press...

Page 324: ... set the field settings you have to change P Mode No P First code No P Second code No To change the field settings proceed as follows RESERVE button INSPECTION TEST button Mode No Field setting mode UP button DOWN button First code No Second code No MODE button Step Action 1 Hold down the INSPECTION TEST button for at least 4 s during normal mode to enter the Field setting mode 2 Press the MODE bu...

Page 325: ... output Thermostat ON Option Operation Malfunction 1 EKRORO Forced OFF ON OFF oper ation 3 Fan speed heating thermostat OFF LL speed Set speed 5 Automatic restart Disabled Enabled 13 or 23 0 Ceiling height setting Normal High Extra high 2 7 m 2 7 3 0 m 3 0 3 5 m 1 Selection of air flow direction setting for when a blocking pad kit has been inst alled 4 way flow 3 way flow 2 way flow 3 Horizontal d...

Page 326: ...door units Mode No First code No Second code No FCQ FFQ FBQ FAQ FDQ FUQ FHQ 10 or 20 0 01 01 01 01 01 01 01 1 01 01 01 02 01 2 02 02 02 02 02 02 3 01 01 01 01 01 01 01 11 or 21 0 01 01 01 01 01 01 01 1 01 01 01 01 01 01 01 2 01 01 01 01 01 01 01 12 or 22 0 01 01 01 01 01 01 01 3 01 01 01 5 02 02 02 02 02 02 02 13 or 23 0 01 01 01 01 1 01 01 3 4 02 02 5 01 01 01 01 01 6 01 14 or 24 0 01 01 01 01 01...

Page 327: ... or 23 First code No 0 Set the second code No according to the tables below FHQ FAQ FCQ and FUQ Second code No Ceiling suspended type 01 Height 2 7 m 02 2 7 m height 3 5 m 03 Not used Second code No Wall mounted type 01 Normal 02 High 03 Extra high Indoor unit Second code No 4 way outlet 3 way outlet 2 way outlet FCQ35 71 01 2 7 m 3 0 m 3 5 m 02 3 0 m 3 3 m 3 8 m 03 3 5 m 3 5 m FCQ100 125 01 3 2 m...

Page 328: ...OFF This setting is called Set Fan Speed Air flow direction setting Set the air flow direction of the indoor units as given in the table below This setting is needed when the optional air outlet blocking pad has been installed The Second code No is factory set to 01 Unit Mode No First code No Second code No Contamination 01 02 light heavy FCQ 10 or 20 0 2500 hrs 1250 hrs FFQ 2500 hrs 1250 hrs FHQ ...

Page 329: ...tting The remote controllers are factory set to MAIN so you only have to change one remote controller from MAIN to SUB To change a remote controller from MAIN to SUB proceed as follows Step Action 1 Insert a flathead screwdriver into the recess between the upper and lower part of the remote controller as shown in the illustration below Gently pry off the upper part of the controller working from t...

Page 330: ...Switch ON the power supply of the central remote controller the unified ON OFF control ler and the indoor unit s 2 Hold down the INSPECTION TEST button for at least 4 s during normal mode to enter the Field setting mode 3 Press the TEMPERATURE CONTROL button until Mode No 00 appears 4 Press the INSPECTION TEST button to inspect the group No display 5 Set the Group No for each group by pressing the...

Page 331: ... Field settings Part 4 Commissioning and Test Run 4 19 3 4 5 1 Individually address setting If the address must be set individually for each unit set the Mode No to 30 For example for power consumption counting ...

Page 332: ...s the highest level of the three field setting levels You can change the views in the inspection level by pressing the INSPECTION TEST button The flow chart below explains the different windows of the inspection level Normal display Last occurred malfunction Indoor model and size System Test Push INSPECTION TEST button Push INSPECTION TEST button Push INSPECTION TEST button Push INSPECTION TEST bu...

Page 333: ...0 100 FBQ JJ 125 125 FUQ 3J 200 200 FDQ UJ 250 250 Step Action 1 Hold down the INSPECTION TEST button for at least 4 s to enter the field setting mode 2 Hold down the INSPECTION TEST button for at least 4 s to enter the maintenance mode 3 Press the TEMPERATURE CONTROL buttons as many times as needed to select the mode No you want 4 Press the TIMER SELECTION button as many times as needed to select...

Page 334: ...43 Forced fan ON Turns the fan ON for each unit individually 44 Individual setting Sets fan speed and air flow direction for each unit individually when using group control Settings are made using the air flow direc tion adjust and fan speed adjust buttons Confirmation by the confirmation button is required 45 Unit No change Changes unit No Set the unit No after changing with the pro gramming time...

Page 335: ... 04 05 16 or 26 0 Night time low noise operation Disabled Factory setting Automatic low noise activation Capacity preceding setting when using KRP58 option Automatic low noise capacity preceding 4 26 1 Automatic low noise start and stop time 22h00 06h00 22h00 08h00 Factory 20h00 08h00 4 26 2 EDP room set ting Disabled Factory setting EDP room setting EDP room setting no freeze up 4 30 3 Defrost st...

Page 336: ...d setting DIP switch Label on PCB Function Details DS1 1 ON OFF Switch emergency operation outdoor unit ON OFF See page 2 6 DS1 2 Cool Heat Select cooling heating emergency operation See page 2 6 DS1 3 ON OFF Test purposes only Keep factory setting OFF DS1 4 ON OFF Test purposes only Keep factory setting OFF BS Label on PCB Function Details BS BS1 Cooling fan only Pump down Heating Forced defrosti...

Page 337: ...oning and Test Run 4 25 3 4 5 1 2 12 Overview of the Factory Settings on the Outdoor Units Factory settings The table below contains the factory settings of all outdoor units RZQ71 RZQ100 RZQ125 26 0 01 01 01 1 04 04 04 2 01 01 01 3 01 01 01 ...

Page 338: ...conducted for 10 hours The maximum outdoor temperature is supposed to occur at 14 00h As the time judgement is made in accordance with the outdoor temperature the above mentioned timing is an estimation only Capacity precedence setting When setting mode 16 26 0 04 the low noise operation will be stopped when the heating or cooling load increases In that case the operation will return to normal ope...

Page 339: ...me clock Capacity priority Setting Same as with the automatic control priority for capacity can be set Prioirity for capacity will be activated by changing field setting 26 0 03 in combination with the closed contact on KRP58M Exceptions The silent operation will be overruled in the following conditions P Pump down residual operation P Startup control P Defrost operation P Oil recovery Sound reduc...

Page 340: ...onsumption during peak moments Setting 3 different demand setting can be selected by using terminal X801M P Demand 1 Close contact between COM and contact 1 P Demand 2 Close contact between COM and contact 2 P Demand 3 Close contact between COM and contact 3 Power supply connector on outdoor PCB X77A Output on X801M 12VDC 12mA Maximum wire length 100 meter Transmission connector on outdoor PCB X6A...

Page 341: ...Test Run 4 29 3 4 5 1 Demand 1 Power consumption limitation in function of setting on DS1 Demand 2 Power consumption limitation set to 40 Demand 3 Forced thermostat OFF DS1 SETTING Maximum Power Consumption 1 2 OFF OFF 60 ON OFF 70 OFF ON 80 ON ON 100 ...

Page 342: ...ity applications such as computerrooms EDP rooms technical rooms etc to increase the capacity of the unit Definition of Low Humidity Area Caution When using the LH settings outside the Low Humidity Area there is an increased risk of ice accumulation on the indoor coil or water blowing out from the indoor unit Relative Humidity Setting is only allowed in this area Indoor side temperature DB C ...

Page 343: ...f actual Te to avoid freeze up activation P Te 1 C for 20 minutes accumulated Change target Te 5 C P Te 1 C for 30 minutes accumulated Change target Te 8 C See graph 1 See graph 2 See graph 3 Freeze protec tion function Start Te 1 C for 40 minutes accumulated OR Te A C for 1 minute continuous Indoor decision Te 1 C for 40 minutes accumulated OR Te 3 C for 1 minute continuous Outdoor decision Te 1 ...

Page 344: ...p Te target limitted 20 C to protect the comp Te target limitted Indoor temp 11 not to rising wetbulb Te by LP sensor target acceptable area P Indoor temp setting Te target down P Indoor temp setting Te target up Te target limitted 2 C not to freeze Te target limitted Indoor temp 25 not to sweat Freeze protection 40min integrated coil temp 1 C Indoor Temp C DB Te target acceptable area ...

Page 345: ... is selected Field setting 16 26 2 03 Remote controller setting temp Te target limitted 20 C to protect the comp Te by LP sensor target acceptable area P Indoor temp setting Te target down P Indoor temp setting Te target up Te target limitted 0 C Freeze protection 40min integrated coil temp 1 C Te target acceptable area Te target C Indoor Temp C DB ...

Page 346: ...re after thermostat OFF the thermostat control will be changed when using field settings 16 26 2 03 16 26 2 04 Thermostat ON P Trs 0 5 C No change from standard setting Thermostat OFF P Trs 2 0 C for 5 minutes continuously P Trs 4 5 C Remote controller setting temp Te target limitted 20 C to protect the comp Te by LP sensor target acceptable area P Indoor temp setting Te target down P Indoor temp ...

Page 347: ... 1 26 5 0 62 0 81 0 91 1 01 1 06 1 16 1 21 1 26 10 0 62 0 81 0 91 1 01 1 06 1 16 1 21 1 26 15 0 62 0 81 0 91 1 01 1 12 1 14 1 19 1 24 20 0 62 0 81 0 91 1 07 1 10 1 12 1 16 1 21 25 0 62 0 81 0 91 1 05 1 07 1 09 1 13 1 18 30 0 61 0 81 0 91 1 01 1 04 1 06 1 10 1 14 35 0 61 0 81 0 94 0 98 1 00 1 02 1 06 1 11 40 0 61 0 81 0 90 0 94 0 96 0 98 1 02 1 06 Outdoor Temp C DB Indoot Temp C WB 11 14 16 18 19 2...

Page 348: ...Field settings ESIE04 01 4 36 Part 4 Commissioning and Test Run 3 1 4 5 2 16 Defrost start setting See Defrost Operation on page 2 18 ...

Page 349: ...37 3 4 5 1 Part 4 3 Test Run and Operation Data Introduction This chapter contains the following information P General operation data P Operation ranges Overview This chapter contains the following topics Topic See page 3 1 General Operation Data 4 38 3 2 Operation Range 4 41 ...

Page 350: ...e remote controller are as given in the table below Indoor Unit Fan H Operation Compressor Rated Frequency High Pressure Mpa Low Pressure Mpa Discharge Pipe Temperature C Suction Temperature C Indoor Unit Side Differential Between Suction Tem perature and Discharge Temperature C Outdoor Unit Side Differential Between Suction Tem perature and Discharge Temperature C Cooling 26 bar 34 bar 6 bar 10 b...

Page 351: ...caution When perfoming maintenance you should at least perform the following inspections Indoor Unit Conditions Outdoor Unit Conditions Cooling Operation 27 C DB 19 C WB 35 C DB Heating Operation 20 C DB 7 C DB 6 C WB Indoor unit Outdoor unit Earth Drain piping Refrigerant piping Transmission wiring between indoor and outdoor units To dedicated breaker Is the air filter dirty What about voltage an...

Page 352: ...er Lower Lower Short Circuit of Indoor Unit Inlet Outlet Air Lower Lower Lower Outdoor Unit Fin Fouling Higher Higher Higher Short Circuit of Outdoor Unit Inlet Outlet Air Higher Higher Higher Air Mixed in Refrigerant Higher Higher Higher Water Mixed in Refrigerant 1 Lower Lower Lower Dirt Mixed in Refrigerant 2 Lower Lower Lower Lack of Refrigerant Gas Lower Lower Lower Unsatisfactory Compression...

Page 353: ...alent piping length 7 5 m P Level difference 0 m P Air flow rate High Operation range Cooling The illustration below shows the operation range Operation range Heating The illustration below shows the operation range Outdoor temp C DB Indoor temp C WB Allowable range of operation Pull down Operation range Outdoor temp C WB Indoor temp C DB Operation range Allowable range of operation Warming up ...

Page 354: ...3 1 4 5 Notes P Depending on operation and installation conditions the indoor unit can change over to freeze up operation Indoor de icing P To reduce the freeze up operation Indoor de icing frequency it is recommended to install the outdoor unit in a location not exposed to wind ...

Page 355: ...aintenance 5 1 4 3 4 5 5 Part 5 Disassembly and Maintenance What is in this part This part contains the following chapters Chapter See page 1 Disassembly and Maintenance Outdoor Units 5 3 2 Disassembly and Maintenance Indoor Units 5 17 ...

Page 356: ...ESIE04 01 5 2 Part 5 Disassembly and Maintenance 3 1 5 ...

Page 357: ... 5 3 3 5 1 5 Part 5 1 Disassembly and Maintenance Outdoor Units 1 1 What Is in This Chapter Introduction This chapter contains the following information on the outdoor units P Disassembly procedures Overview This chapter contains the following topics Topic See page 1 2 RZQ71 125B7V3B 5 4 ...

Page 358: ...ollowing topics Topic See page Removal of Outside Panels 5 5 Removal of Propeller Fan and Fan Motor 5 6 Removal of Switch Box 5 7 Removal of PC Board Ass y 1 5 9 Removal of PC Board Ass y 2 5 11 Removal of Low Pressure Sensor Electronic Expansion Valve and Others 5 12 Removal of Thermistor 5 13 Removal of Four Way Valve 5 14 Removal of Compressor 5 15 ...

Page 359: ...le with a slotted screwdriver and then push the overall grille downward to disassemble it For the front panel side front panel unscrew a single mounting screw and then push this panel downward to remove it For the top panel unscrew the eight mounting screws and then remove this panel For the front panel of the piping cover unscrew a single mounting screw and then remove this panel For the side pan...

Page 360: ...r 1 2 3 4 Remove the connector for the fan motor from the PC board Symbol of connector RZQ71B7V3B X206A RZQ100 125B7V3B X206A X207A The lead wire is clamped in three places Click on partition plate 3 places Unscrew the three screws that fix the front panel and then pull up the lead wire Unfastening the four lock bolts from the fan motor enables the removal of this fan motor P In order to disconnec...

Page 361: ...nals which have a connection to the switch box P Disconnect the relay connector from the lead wire of the compressor Only on RZQ71B7V3B P Remove the lead wire of the compressor from the terminal cover of this compressor P Disconnect the relay connector from the lead wire of the reactor Only on RZQ100 125B7V3B P Disconnect the relay connector from the lead wire of the fan motor P Remove the lead wi...

Page 362: ... 1 5 5 2 3 Unscrew a single screw on RZQ71B7V3B or two screws on RZQ100 125B7V3B which fix the switch box In order to remove the switch box disengage the three clicks one on the right and two on the left and then pull out this switch box frontward or upward Step Procedure Points Hook Hook Hook ...

Page 363: ...ove the PC board for control use 1 Disconnect all connectors P Disconnect the relay connector from the lead wire of the compressor Only on RZQ71B7V3B P Remove the lead wire from the terminal cover of the compressor P Remove the lead wire from the terminal of the high pressure switch Only on RZQ71B7V3B P Disconnect the respective connectors from the following parts on the PC board P Each thermistor...

Page 364: ...Maintenance 3 1 5 5 2 P Unscrew a single screw from the PC board ass y for control use Note The plastic casing and the PC board are bonded to each other Therefore for the replacement of these parts replace by a set of the PC board ass y Step Procedure Points Plastic casing PC board ...

Page 365: ...r use 1 2 Disconnect all connectors Unscrew the three screws that fix the mounting plate of electrical components for control use Disengage the hooks in two places to remove the mounting plate of electrical components for control use 3 In order to remove the PC board ass y for inverter use unscrew a single screw Note The plastic casing and the PC board are bonded to each other Therefore for the re...

Page 366: ...alve 1 Pull out the coil from the electronic expansion valve upward 2 Strip off the brazed sections in two places on the body of the valve and then remove this body 3 Remove the high pressure switch P RZQ100 125B7V3B 1 Disconnect the terminals from the high pressure switch and then strip off the brazed section on the switch 4 Remove the solenoid valve Only on RZQ100 125B7V3B 1 Unscrew a single scr...

Page 367: ...RZQ71 125B7V3B 1 In order to remove the discharge pipe thermistor pinch the mounting spring and pull out this thermistor 2 For the heat exchange thermistor pull the clamp frontward and then remove this thermistor 3 In order to remove the outdoor air thermistor pull out this thermistor frontward and then slide it to the right 4 For the suction pipe thermistor pull this thermistor frontward and then...

Page 368: ...be sure there are no more refrigerants left in the unit before starting this removal P In order to prevent a gas welding flame from having influence on other pipes protect them with a sheet or iron plate used for welding operation P Caution While in installation of the four way valve in order to prevent the main unit from reaching a temperature of 120 C or more expose the valve to a flame while co...

Page 369: ...ections are directly stripped off from the pipes oil may catch fire Be sure to cut the pipes in advance with a pipe cutter 1 Unscrew the five screws from the stop valve mounting plate 2 Disconnect the gas piping and liquid piping 3 Push the protrusion from both sides to remove the terminal cover 4 Remove the lead wires from the terminal pins 5 Remove the sound insulation 1 2 and 3 and vibration is...

Page 370: ...Disassembly and Maintenance Outdoor Units ESIE04 01 5 16 Part 5 Disassembly and Maintenance 3 1 5 5 ...

Page 371: ... P Components P Disassembly procedures Explodedviewsand components This chapter contains the following topics Dissassembly procedures This chapter contains the following topics Topic See page 2 2 FCQ35B7V1 FCQ71B7V3B 5 18 2 3 FCQ100 125B7V3B 5 20 2 4 FBQ35 50B7V1 5 22 2 5 FBQ60B7V1 FBQ71B7V3B 5 24 2 6 FBQ100 125B7V3B 5 26 2 7 FDQ125B7V3B 5 28 Topic See page 2 8 FFQ35 60BV1B 5 30 2 9 FHQ35 125BUV1 ...

Page 372: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 18 Part 5 Disassembly and Maintenance 3 1 5 5 2 2 FCQ35B7V1 FCQ71B7V3B Exploded view The illustration below shows the exploded view ...

Page 373: ... Nut with washer F12 Hold plate assy E1 Switch box assy F13 Panel mounting plate E2 Switch box body F14 Drain pump mounting plate E4 Bell mouth F15 Vibration isolator E5 Switch box cover assy 1 F16 Hexagon mounting bolt E6 Switch box cover 2 F17 Vibration isolator E7 PCB assy F18 Nut with washer E7 1 Capac setting adapt not for FCQ71 F19 Feeler bulb clamp E8 Thermistor Air F20 Thermistor fixing pl...

Page 374: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 20 Part 5 Disassembly and Maintenance 3 1 5 5 2 3 FCQ100 125B7V3B Exploded view The illustration below shows the exploded view ...

Page 375: ... washer F12 Hold plate assy E1 Switch box assy F13 Panel mounting plate E2 Switch box body F14 Drain pump mounting plate E4 Bell mouth F15 Vibration isolator E5 Switch box cover assy 1 F16 Hexagon mounting bolt E6 Switch box cover 2 F17 Vibration isolator E7 1 PCB assy F18 Nut with washer E7 1 1 Thermistor Air F19 Feeler bulb clamp E9 Capacitor F21 Rubber bush E10 Terminal F22 Inner heat insulator...

Page 376: ... and Maintenance Indoor Units ESIE04 01 5 22 Part 5 Disassembly and Maintenance 3 1 5 5 2 4 FBQ35 50B7V1 Exploded view The illustration below shows the exploded view Switch box Drain pump assy Accessories Fan assy ...

Page 377: ...ch box cover assy 32 2 Switch box fixing plate 15 Drain pan setting plate 32 3 Terminal fixing plate 16 Drain socket cover assy 1 32 4 Option fixing plate left 17 Drain socket cover assy 2 32 5 Option fixing plate right 18 Hanger bracket 32 6 PCB assy 19 Drain pan assy 32 7 Air thermistor 19 1 Drain socket cap 32 8 Power supply transformer 20 Heat exchanger assy 32 9 Fan motor capacitor 20 1 Distr...

Page 378: ... Maintenance Indoor Units ESIE04 01 5 24 Part 5 Disassembly and Maintenance 3 1 5 5 2 5 FBQ60B7V1 FBQ71B7V3B Exploded view The illustration below shows the exploded view Switch box Drain pump assy Accessories Fan assy ...

Page 379: ...box cover assy 32 2 Switch box fixing plate 15 Drain pan setting plate 32 3 Terminal fixing plate 16 Drain socket cover assy 1 32 4 Option fixing plate left 17 Drain socket cover assy 2 32 5 Option fixing plate right 18 Hanger bracket 32 6 PCB assy 19 Drain pan assy 32 7 Air thermistor 19 1 Drain socket cap 32 8 Power supply transformer 20 Heat exchanger assy 32 9 Fan motor capacitor 20 1 Distribu...

Page 380: ...nd Maintenance Indoor Units ESIE04 01 5 26 Part 5 Disassembly and Maintenance 3 1 5 5 2 6 FBQ100 125B7V3B Exploded view The illustration below shows the exploded view Switch box Drain pump assy Accessories Fan assy ...

Page 381: ...ain pan setting plate 31 13 Bearing fixing plate 16 Drain socket cover assy 1 32 Switch box assy 17 Drain socket cover assy 2 32 1 Switch box body 18 Hanger bracket 32 2 Switch box fixing plate 19 Drain pan assy 32 3 Terminal fixing plate 19 1 Drain socket cap 32 4 Option fixing plate left 20 Heat exchanger assy 32 5 Option fixing plate right 20 1 Distributor with filter assy 32 6 PCB assy 20 2 Si...

Page 382: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 28 Part 5 Disassembly and Maintenance 3 1 5 5 2 7 FDQ125B7V3B Exploded view The illustration below shows the exploded view Switch box ...

Page 383: ...h box 6 1 Switch box fixing plate 6 28 Insulation switch box 6 3 Terminal fixing plate 6 29 Insulation switch box 6 4 Magnetic contacor 7 Hook 6 6 Switch box body 8 Filter cover 6 7 Option fixing plate left 9 Fixture heat exchanger right 6 8 Option fixing plate right 10 Fixture heat exchanger left 6 9 Wire harness 11 By pass sealing plate 6 10 Wire harness 12 Heat exchanger lassy 6 14 Wire harness...

Page 384: ...ter 5 32 Removal of Decoration Panel 5 34 Removal of Horizontal Vane 5 37 Removal of Swing Motor 5 39 Removal of Switch Box 5 41 Removal of Fan Rotor and Fan Motor 5 43 Removal of Drain Pan 5 46 Removal of Drain Pump 5 47 Installation of Drain Pump 5 49 Replacement of Heat Exchanger Thermistor 5 52 Replacement of Heat Exchanger 5 54 Replacement of PC Board 5 60 Replacement of Receiver Section of W...

Page 385: ...all power supplies before disassembling work Procedure Step Procedure Points 1 Removing the suction grille 1 To remove the suction grille slide the two tabs simultaneously and pull the suction grille down slowly P The grille can be installed freely in four directions P When closing push up the grille slowly 2 With the suction grille open at an angle of 45 lift it up to remove it S2630 S2631 ...

Page 386: ...ing Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Removing the air filter 1 Open the suction grille See Removal of Suction Grille 2 Disengage the hooks of the air filter by pulling the filter downward at an angle and remove the filter S2632 S2633 ...

Page 387: ...1 5 s 2 Installation of the air filter 1 Hook the air filter to the protrusions located at the top of the suction grille 2 Push the lower section of the air filter into the protrusions located at the bottom of the suction grille to secure the air filter in place Step Procedure Points S2634 S2635 ...

Page 388: ...ff all power supplies before disassembling work Procedure Step Procedure Points 1 Removing the decoration panel 1 Remove the switch box cover and disconnect the connector of swing motor from the harness connector of electric parts 2 Check that the provisional hanger is in the position where it can be engaged with the hook of switch box S2636 S2637 Provisional hanger Hook of switch box S2638 ...

Page 389: ...n panel is attached with 4 mounting screws Remove the two fixing screws at the switch box side first 4 Loosen the other two screws by approx 10 mm The decoration panel is hung with these two fixing screws and the provisional hanger Step Procedure Points Provisional hanger Loosen the two screws by approx 10 mm S2639 ...

Page 390: ...s ESIE04 01 5 36 Part 5 Disassembly and Maintenance 3 1 5 5 5 Turn the provisional hanger to disengage it from the hook of switch box and slide the decoration panel in the arrow direction to remove the panel Step Procedure Points S2640 S2641 ...

Page 391: ...ng at four corners of frame fixed with three screws each At that time peel the end of black sealing material of discharge port in part P Peel not the anti sweat material but only sealing material of discharge port Note When restore the sealing material of discharge port be careful that no clearance exists between padding and sealing material as original installation Otherwise due dripping may occu...

Page 392: ...r Units ESIE04 01 5 38 Part 5 Disassembly and Maintenance 3 1 5 5 3 Remove the two screws for each bearing of horizontal vane 16 screws in total 4 Remove the horizontal vane Step Procedure Points Fixing screws Fixing screws S2645 S2646 ...

Page 393: ...rocedure Points 1 Removing the decoration panel P Refer to the Removal of Decoration Panel 2 Pull out the swing motor harness from the wiring groove 3 Remove two mounting screws for swing motor mounting plate to remove the plate 4 Turn the horizontal vane to downward manually and turn up the panel side gear to disengage the motor side gear 5 Remove the swing motor P Precaution during swing motor i...

Page 394: ...mal noise may be caused Install the motor after checking of correct gear engagement 2 Install the swing motor in reverse process of removal procedure P When install the decoration panel be careful not to catch the lead wire 3 After installing the swing motor be sure to turn on the power switch for resetting for initializing the vane positions Step Procedure Points Motor side gear Panel side gear S...

Page 395: ...itch box Two pieces of M4 screws 2 Disconnect the connection wires for outdoor units and earth wire At this time cut the tie wrap fixing the connection wires Disconnect wire of remote controller also At this time cut the tie wrap fixing the wire of remote controller S2650 S2651 Fixing screw M4 12 Fixing screw M5 12 Fixing screw M4 12 Wires for remote controller Tie wrap Tie wrap Outdoor unit conne...

Page 396: ...raps fixing lead wires of float switch thermistor for heating and liquid pipe thermistor 5 Remove two fixing screws located at both ends of switch box and one screw inside the box 6 Remove the switch box Five pieces lead wires shown below connect to the PCB and lead wire connected to the capacitor for fan motor X15A Lead wire of float switch X17A Lead wire of thermistor for heating X18A Lead wire ...

Page 397: ...o screws P A convex protrusion is provided at the position of bell mouth fixing screw to prevent misjudgment with switch box fixing position 1 Removing the fan rotor 1 Remove the resin nut and rotation stopper to dismount the fan rotor P For removal of switch box refer to the Removal of Switch Box on page 5 41 2 Remove the resin nut with spanner 3 Pull down the fan rotor slowly S2653 S2654 S2655 R...

Page 398: ...bration of the fan do not apply excessive torque to the shroud the slash part of Fig 2 Note There is no problem to hold the shroud when carrying or lifting the fan 2 Removing the fan motor 1 Disconnect the harness connector for motor from the motor 2 Remove the three washer faced bolts Step Procedure Points Hub Shroud Fig 1 Fan fixing method Fig 2 Do not apply excessive torque to the area shown in...

Page 399: ...ESIE04 01 Disassembly and Maintenance Indoor Units Part 5 Disassembly and Maintenance 5 45 3 5 1 5 3 Pull down the fan motor slowly Step Procedure Points S2657 ...

Page 400: ...ork Procedure Step Procedure Points 1 Remove the drain socket to drain water from the drain hole 2 Remove the 4 mounting screws to remove the drain pan P Remove the drain socket to drain water from the drain hole P If water is in the drain pan it can spill and wet the floor Drain water completely or cover the floor with a vinyl sheet before removing the drain pan 3 Pull down the drain pan straight...

Page 401: ...nutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Removing the drain pump 1 Remove two screws fixing float switch ass y Screw and 2 Remove the float switch ass y P Remove the float switch before removing drain pump in order to prevent the float switch from damage ScrewQ ScrewR ScrewS S2660 S2661 ...

Page 402: ...nce 3 1 5 5 3 Cut the tie wrap fixing the drain hose Remove the screw P When pulling out the drain hose be sure to wear safety gloves to prevent your finger from injury with heat exchanger fin 4 Pull out the drain hose 5 Remove the drain pump Step Procedure Points ScrewQ S2662 S2664 S2663 ...

Page 403: ... of Drain Pump Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Installing the drain pump 1 Put the lead wire in the wiring groove properly fix the drain pump ass y with screw and insert the drain hose Screw c Wiring groove S2665 ...

Page 404: ... P Inserting the drain hose should be executed before installation of float switch in order to prevent the float switch from damage P Put the tie wrap on the white line on the hose inserted P When inserting the drain hose be sure to wear safety gloves to prevent your finger from injury with heat exchanger fin 3 Put the tie wrap on the hose Step Procedure Points S2666 S2668 White line S2667 ...

Page 405: ... properly 5 Install the drain pump together with the float switch with screw and Step Procedure Points S2661 Wiring groove Lead wires ScrewR ScrewS S2669 When install the drain pan put the lead wires of float switch and drain pump in wiring groove and pass the lead wires above on the black sealing material on the drain pan Otherwise due dripping may occur due to leakage of cool air ...

Page 406: ...work Procedure Step Procedure Points 1 Disconnect the grounding terminal from the header 2 Pull apart the thermistor ass y and motor lead wire from the clamps Pull out the thermistor from the slit of heat exchanger partition plate 3 4 Remove two screws to the top panel then pull the partition plate of heat exchanger downward S2670 Clamp Clamps Fan motor lead wire Thermistor ass y Slit S2671 S2672 ...

Page 407: ...used Be sure to use a heat resistance tie wrap when installing new thermistor Heat resistance tie wrap Parts No 1278921 Drg No 4SA90202 1 6 Pull out the thermistor from the insertion pipe Thermistor for heating The upper one wrapped with a yellow tape Thermistor for liquid pipe The lower one without taping P Replace thermistor as an ass y Two thermistors are bound with special heat resistance tube...

Page 408: ...e Step Procedure Points 1 Removing the heat exchanger 1 Remove the refrigerant pipe after completion of refrigerant collection and pump down operation P This work should be performed with two personnel including one person for supporting the heat exchanger to avoid falling down during the work 2 Remove the fixing plate of heat exchanger 3 Remove the pipe fixing plate mounted with two screws S2675 ...

Page 409: ...section of heat exchanger into intimate contact with the polystyrene partition plate correctly 2 Insert the claw section of pipe fixing plate into the contracted part of the external plate securely Step Procedure Points S2677 Groove of ceiling polystyrene foam Polystyrene partition plate for heat exchanger tube plate S2678 S2679 Claw section Bring the heat exchanger tube plate section into intimat...

Page 410: ...tube P Set the lead wire with yellow tape for heating upper side while that with no tape for liquid lower side 5 Reinstall the lead wire of thermistor and anti sweat tube on the original position by using two pieces of heat resistance tie wrap Heat resistance tie wrap Parts No 1278921 Drg No 4SA90202 1 Step Procedure Points Heat exchanger mounting plate S2681 S2682 Anti sweat tube S2673 Anti sweat...

Page 411: ... Pass the thermistor ass y through the clamps and the slit of partition plate securely as the original state Pass the lead wire of motor also through the clamp securely 8 Insert the grounding terminal to the header Step Procedure Points S2672 Heat exchanger partition plate Fan motor lead wire Clamp Clamps Slit of partition plate Fan motor lead wire Thermistor ass y S2683 S2684 ...

Page 412: ...g may occur due to leakage of cool air 10 Installing the bell mouth When install the bell mouth put the lead wires of fan motor and thermistor into the wiring groove securely as they were taking care that the wires do not contact with fan rotor 11 Tighten the two screws to install the bell mouth Bell mouth is formed with step P A convex protrusion is provided at the position of bell mouth fixing s...

Page 413: ...nance 5 59 3 5 1 5 12 Install the switch box with two M4 screws and one M5 screw P For installation of the switch box refer to the Removal of Switch Box on page 5 41 P For re wiring inside the switch box refer to the Replacement of PC Board on page 5 60 Step Procedure Points S2652 ...

Page 414: ...ing flap X36A Air temperature thermistor X19A High tension cable of transformer X11A Low tension cable of transformer X10A Outdoor unit connection wire X27A Fan motor lead wire X20A Lead wire of remote controller X5A Lead wire of drain pump X25A Lead wire of liquid pipe thermistor X18A Lead wire of swing motor X36A Refer to the item 3 below Lead wire of thermistor for heating X17A Lead wire of flo...

Page 415: ...d two pieces of wire of thermistor to the switch box by using tie wrap Use tie wrap properly to prevent the wire from contact with hot part of the PC board Insert the rubber bushing of air temperature thermistor into the slit of switch box Then check that it is connected to the connector X19A Step Procedure Points P1P2F1F2 X10A X36A X5A X11A X27A Hooking claws for mounting PC board Three locations...

Page 416: ...o the switch box with tie wrap The tie wrap is used for preventing the wire from contact with a hot part on the PC board 3 Installing the decoration panel 1 Put the two holes on the decoration panel to the panel mounting screws and slide the panel turn the stoppers to prevent the panel from falling down then install the remainder two screws P When installing the decoration panel be careful not to ...

Page 417: ... Maintenance Indoor Units Part 5 Disassembly and Maintenance 5 63 3 5 1 5 2 Insert the lead wires of swing flap to the connector on the PC board 3 Install the cover of switch box and the grille Step Procedure Points S2637 S2636 ...

Page 418: ...ower supplies before disassembling work Procedure Step Procedure Points 1 Removing the receiver section 1 Remove two screws of the transmission parts box to remove the box 2 Cut the tie wrap fixing transmission parts box and harness and disconnect the connector X1A 3 Disconnect the lead wire of the transmission parts box from the connector X24A on the indoor unit PC board X24 Transmission parts bo...

Page 419: ...oove 6 Push three claws on the rear side of panel to remove the corner cover receiver section 2 Installing the receiver section 1 Pass through the lead wire of the receiver section and insert the corner cover 2 Put the wire in the wiring groove on the hooking piece securely Step Procedure Points Decoration panel Push three claws to remove the corner cover Lead wire of receiver section S2697 S2698 ...

Page 420: ...as those of the transmission parts box removed For details of setting refer to the instruction manual of wireless remote controller kit 6 Mount the transmission parts box with two screws after checking that the tie wrap is in the fixing position and the lead wire is caught with fixing part of tie wrap and can not come out 7 Insert the lead wire from the transmission parts box to the connector X24A...

Page 421: ...view This part contains the following topics Topic See page Removal of Air Filter and Suction Grille 5 68 Removal of Electrical Parts and PC Boards 5 70 Removal of Horizontal Blade 5 73 Removal of Fan Rotor and Fan Motor 5 74 Removal of Fan Bearing 5 77 Removal of Bottom Panel and Drain Pan 5 79 Removal of Swing Motor 5 81 ...

Page 422: ...d Suction Grille Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Push the 2 tabs and open the suction grilles 2 Push the air filter installation panel from 2 places in the direction of the arrow and pull the air filter out toward yourself ...

Page 423: ...ESIE04 01 Disassembly and Maintenance Indoor Units Part 5 Disassembly and Maintenance 5 69 3 5 1 5 3 Grip the suction grille hinge strongly and remove the suction grille Step Procedure Points ...

Page 424: ... 2 Removal of Electrical Parts and PC Boards Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Loosen the 2 screws of the control box cover and remove the control box cover 2 Remove the 2 screws of the control box ...

Page 425: ...assembly and Maintenance 5 71 3 5 1 5 3 Pull down the control box and let it hang by the 2 locations in the rear Electrical parts can now be removed 4 Disconnect the connector mounted on the PC board 5 Remove the PC board installation screw Step Procedure Points ...

Page 426: ...ssembly and Maintenance Indoor Units ESIE04 01 5 72 Part 5 Disassembly and Maintenance 3 1 5 5 6 Slide the PC board to the left away from the tabs on the right and remove the PC board Step Procedure Points ...

Page 427: ...f the horizontal blade and detach the center shaft Two shafts provided on Types 140 and 160 2 Then gently bend the center of the horizontal blade and take both the end shafts out of their bearings P When removing the horizontal blade from the bearings at both ends be careful not to get the blow port thermal insulation scratched Reassembling precautions 1 The shaft at the right end of the horizonta...

Page 428: ...e 3 1 5 5 2 9 4 Removal of Fan Rotor and Fan Motor Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Push the 2 tabs of the fan housing toward the inside with your fingers and pull out the fan housing ...

Page 429: ...ntenance Indoor Units Part 5 Disassembly and Maintenance 5 75 3 5 1 5 2 Loosen the 2 hexagon set screws of the intermediate bearing 3 Slide the intermediate bearing to the right and remove the fan rotor ass y Step Procedure Points ...

Page 430: ...ss tube and get the connector exposed P Aconnectors Connector 1 handles high voltage 220 240 V so be sure to turn of the power supply before disconnecting 5 Disconnect the 2 fan motor connecting connectors 6 Remove the 2 fan motor fasteners 7 Remove the fan motor P Finally reconnect the fan motor connector cover it with the glass tube and secure it with the tie wrap Step Procedure Points ...

Page 431: ... 5 Removal of Fan Bearing Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points P Remove the fan rotor according to the procedures for removing the fan rotor and fan motor 1 Remove the left side panel installation screw ...

Page 432: ...e Indoor Units ESIE04 01 5 78 Part 5 Disassembly and Maintenance 3 1 5 5 2 Slide the left side panel toward the front of the unit and remove 3 Remove the 2 bearing installation screws and remove the bearing Step Procedure Points ...

Page 433: ...s before disassembling work Procedure Step Procedure Points 1 Remove the 7 bottom panel installation screws 2 each on the left and right 3 in the rear and remove the bottom panel Remove the rear surface screws 2 each on the left and right and remove the center screw while supporting the bottom panel from underneath 2 Let down the rear of the bottom panel push out toward the front removed from the ...

Page 434: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 80 Part 5 Disassembly and Maintenance 3 1 5 5 3 Remove the drain pan retainer 2 screw ...

Page 435: ...emove the screw from the right side panel Slide the right side panel toward the front and detach it 2 Cut off the tie wrap of the swing motor connector 3 Disconnect the connector from the swing motor connector 4 Remove the screw from the swing motor The swing motor has two projections on it Lower the swing motor and take it out P When reassembling fit the horizontal blade shaft end to the D profil...

Page 436: ...0 FUQ71 125BUV1B Overview This part contains the following topics Topic See page Removal of Air Filter 5 83 Removal of Suction Grille 5 84 Removal of Fan 5 86 Removal of Fan Motor 5 88 Removal of Drain Pan 5 90 Removal of Drain Pump 5 93 Removal of Swing Motor 5 95 Removal of Air Flow Control Blade 5 97 ...

Page 437: ... more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Opening suction grille Push two tabs on suction grille toward the center of grille at the same time 2 Pull down suction grille Two strings are equipped to prevent the grille from dropping 3 To remove air filter lift the tabs up at the same time and pull it forward ...

Page 438: ...2 10 2 Removal of Suction Grille Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Unhook two drop prevention strings while supporting suction grille with hand 2 Open suction grille forward for approx 45 degree ...

Page 439: ...SIE04 01 Disassembly and Maintenance Indoor Units Part 5 Disassembly and Maintenance 5 85 3 5 1 5 3 Disengage three hooks located at rear side of the grille to remove suction grille Step Procedure Points ...

Page 440: ... all power supplies before disassembling work Procedure Step Procedure Points 1 Remove two mounting screws to dismount switch box cover 2 Remove suction air temperature thermistor attached to bell mouth 3 Bell mouth is mounted with tree screws Loosen a screw located at diagonal position to the pipings and remove other two screws Edge of rib Stick filament tape Edge of clamp S1271 ...

Page 441: ...ance Indoor Units Part 5 Disassembly and Maintenance 5 87 3 5 1 5 4 Remove bell mouth by sliding to piping direction 5 To dismount fan remove washer based nut using double ended wrench 6 Remove fan by pulling down Step Procedure Points ...

Page 442: ... before disassembling work Procedure Step Procedure Points 1 Removing fan motor a Disconnect connector b Remove lead wire retaining plate Caution Fan motor can be removed without removing the lead wire retaining plate However when washing the heat exchanger this plate should be removed and protect the lead wires 2 Remove screws for mounting fan motor P FUQ71BUV1B Three screws P FUQ100 125BUV1B Fou...

Page 443: ...ESIE04 01 Disassembly and Maintenance Indoor Units Part 5 Disassembly and Maintenance 5 89 3 5 1 5 3 Remove motor by pulling down Step Procedure Points ...

Page 444: ...re to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points P Remove suction grille according to the Removal of air filter and that of suction grille 1 To dismount three corner sections A B and C remove a flocked screw 2 Remove three flocked screws to dismount corner section D ...

Page 445: ...erference with next process Caution This work should be done by two personnel If drain water remain in the pan it may drop and stain on the floor Make sure to check if no drain water remain in the pan or cover the floor with vinyl sheet before disassembling work 5 To dismount drain pan blocking plate remove each two mounting screws located at four corners Step Procedure Points ...

Page 446: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 92 Part 5 Disassembly and Maintenance 3 1 5 5 6 Remove drain pan by pulling it down Step Procedure Points ...

Page 447: ...efore disassembling work Procedure Step Procedure Points 1 Drain pump is located at piping side Cut clamp material of hose and disconnect hose from pump Caution When reconnect drain hose with the pump secure hose at joint using clamping material such as Tielap Clamping material should be normally included in the stock items 2 Remove four screws to dismount drain pump 3 Dismount drain pump by pulli...

Page 448: ...94 Part 5 Disassembly and Maintenance 3 1 5 5 4 Removing float switch a Loosen three mounting screws to remove drain pump mounting base b Remove two screws located at opposite side of drain pump mounting base to dismount float switch Step Procedure Points ...

Page 449: ...ait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points P Remove suction grille according to Removal of Suction Grille 1 Swing motor is located at the diagonal position of piping 2 Remove two mounting screws for swing motor cover 3 Remove swing motor cover by holding two tabs on the cover ...

Page 450: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 96 Part 5 Disassembly and Maintenance 3 1 5 5 4 Remove two screws to dismount swing motor Step Procedure Points ...

Page 451: ...5 97 3 5 1 5 2 10 8 Removal of Air Flow Control Blade Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 To remove horizontal blade press down tabs located at both end of blade and pull them forward ...

Page 452: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 98 Part 5 Disassembly and Maintenance 3 1 5 5 2 Remove horizontal blade Step Procedure Points ...

Page 453: ...s the following topics Topic See page Removal of Air Filter and Front Panel 5 100 Removal of Front Grille 5 100 Removal of the horizontal blade and vertical blade 5 103 Removal of Electrical Box 5 105 Removal of Heat Exchanger 5 106 Removal of Fan Motor and Fan Rotor 5 107 Removal of Air Swing Motor 5 108 Drain Hose Piping to the Left 5 109 ...

Page 454: ...utes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Put your fingers on protrusions at left and right side of the unit to open the front panel 2 To remove the air filter push up the tab and pull down the filter P The air filter is free from the side of left or right P It is easy to install if inserting along the guide ...

Page 455: ...Maintenance Indoor Units Part 5 Disassembly and Maintenance 5 101 3 5 1 5 3 Disengage the holding section on upper right of the panel by pushing toward left then slide toward right to remove the front panel Step Procedure Points ...

Page 456: ... front panel in accordance with Removal of Front Panel 1 Remove three pieces of front grille fixing screws 2 Remove the front grille by pulling forward while pushing three hooks located at upper part of the grille one by one P If hard to remove try to push the hooks by a screwdriver or the like to remove 3 The front grille can be removed by pulling forward and lift the bottom part P Make sure that...

Page 457: ...e Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Removing the horizontal blade 1 Open the horizontal blade 2 Bend the horizontal blade slightly to disengage the fixing part at right side 3 Pull the horizontal blade rightward and take it out Horizontal blade Holder ...

Page 458: ... 2 Removing the vertical blade 1 Disengage the protrusion on upper side of blade from holder plate Three locations 2 Push the vertical blade backward and pull the lower side forward to disengage the blade from three hooks Step Procedure Points Holder plate Protrusion Holder plate Vertical blade Hook ...

Page 459: ...p Procedure Points P Removing the front grille in accordance with Removal of Front Grille 1 Remove the screw on the service cover 2 Remove the screw on the drip proof plate 3 Remove the screw for the grounding wire 4 Remove the following connectors P Fan motor connector P Air swing motor connector 5 Pull the heat exchanger thermistor and dismantle it 6 Remove the fixing screw for switch box 7 Pull...

Page 460: ...er performing vacuum dehydration Caution Don t mix air or the like other than the specified refrigerant into a refrigeration circle Mixing of air or other gas causes abnormal high pressure in the refrigerating cycle and results in pipe rupture or personal injuries P Pay attention not to soil the floor with residual drain P In case that the drain hose is buried inside wall remove the heat exchanger...

Page 461: ...ing the electrical box in accordance with Removal of Electrical Box 1 Removing the fan motor 1 Insert a Phillips tip screwdriver into the air outlet and remove the screws fixing the fan motor and fan rotor The screws can be removed without removing of horizontal blade 2 Remove the two screws on the bearing cover 1 and 2 and dismantle the covers 3 Take out the fan motor sideways 2 Removing the fan ...

Page 462: ...nutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points P Removing the front grille in accordance with Removal of Front Grille 1 Disconnect the air swing motor connector in the electrical box 2 Remove the screw which fixes the air swing motor 3 Pull the air swing link assembly to the left strongly to dismantle ...

Page 463: ...nce with Removal of Front Grille P The drain pan and bottom frame are designed as an integral type P Insert the drain hose to the hose plug securely as far as it will go 1 Pull out the drain hose attached on the rear right of the unit 2 Pull out the drain plug and drain socket attached on the rear left of the unit 3 Piping of Drain Hose at Left Side 4 Insert the drain plug and drain socket into th...

Page 464: ... the following topics Topic See page Removal of Air Filter 5 111 Removal of Slide Panel Operation Display Cover and Front Grille 5 112 Removal of Electrical Parts Box 5 113 Removal of PC Board 5 114 Removal of Swing Louvre Unit 5 115 Removal of Fan Motor 5 117 Removal of Drain Pan 5 118 Removal of Heat Exchanger 5 120 Removal of Fan Rotor 5 121 ...

Page 465: ... Maintenance 5 111 3 5 1 5 2 12 1 Removal of Air Filter Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points 1 Hold the air filter tabs with your hands and pull out 2 Pull the air filter out ...

Page 466: ...bling work Procedure Step Procedure Points 1 Remove the left and right side panels 1 white screw each on left and right The wiring diagram is applied to the right side panel and troubleshooting list is applied to the left side panel 2 Remove the operation display cover installation screw and remove the cover by sliding to the right 3 Remove the front grille installation screws 3 M4X l12 screws wit...

Page 467: ... Procedure Points P Remove the left and right side panels operation display cover and front grille according to the procedures for their removal The left and right side panels have to be taken off in order to remove the front grille 1 Remove the 1 thermistor 2 heater connector and 3 rubber clip connected to the PC board 2 Remove the 2 screws fastening the electrical parts box to the units 3 Lift t...

Page 468: ... Procedure Points P Remove the outer panels according to the procedure for Removal of Electrical Parts Box 1 Disconnect the front side wiring connector connected to the PC board 2 Disconnect the PC board from the tabs by pushing it inward Draw the PC board out partly and disconnect the remaining connectors The tape holding the electrical parts box and PC board is for transport and is unnecessary w...

Page 469: ...oval of Swing Louvre Unit Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Procedure Step Procedure Points P Remove the electrical parts box according to Removal of Electrical Parts Box 1 Remove the horizontal blade 2 Remove the swing Louvre unit 3 screws ...

Page 470: ...enance Indoor Units ESIE04 01 5 116 Part 5 Disassembly and Maintenance 3 1 5 5 3 Remove the swing motor from the swing Louvre unit You can replace the swing motor without removing the swing Louvre unit Step Procedure Points ...

Page 471: ...re after turning off all power supplies before disassembling work Procedure Step Procedure Points P Remove side panels and other external casing and electrical parts box according to their removal procedures Use 2 5 mm hexagon nut driver 1 Loosen the hexagon set screw fastening the fan rotor and fan motor 2 Remove the fan motor fastener 3 screws 3 Remove the fan motor ...

Page 472: ... before disassembling work Procedure Step Procedure Points P If removing the drain pan Carry out pump down disconnect the transmission piping and wiring and remove the main unit The bottom panel is fastened to the unit installation plate by 3 screws P Remove side panels operation display cover and front cover according to their removal procedures 1 Remove the bottom panel 2 Remove the air discharg...

Page 473: ...assembly and Maintenance 5 119 3 5 1 5 3 Remove the air discharge unit 7 screws Center of air discharge section also screw fastened 4 Remove the drain pan 1 Pull left side toward yourself 2 Move the drain hose to the right until it comes off Step Procedure Points ...

Page 474: ...ies before disassembling work Procedure Step Procedure Points P Before dismounting a heat exchanger make sure to proceed pump down refrigerant to outdoor unit and disconnect the connection pipe and wiring then remove the indoor unit 1 Dismount top plate 2 Remove the 3 setting screws for heat exchanger and one screw for pipe fixing box There is a hock right hand side behind the heat exchanger Top p...

Page 475: ...edure Step Procedure Points P Remove the heat exchanger according to Removal of Heat Exchanger You can also remove the auxiliary electric heater without removing the heat exchanger 1 Remove the 2 screws of the left side panel 2 Remove the fan rotor by sliding to the left and pulling out toward yourself Reference If you have enough space to pull the fan rotor out from the left side you can remove i...

Page 476: ...Disassembly and Maintenance Indoor Units ESIE04 01 5 122 Part 5 Disassembly and Maintenance 3 1 5 5 ...

Page 477: ... k 4 24 C C4 k 3 50 C5 k 3 50 C9 k 3 50 ceiling height k 4 15 Centralized Address Setting Error k 3 96 centralized group No setting k 4 18 changing field settings wired remote controller k 4 11 field settings wireless remote controller k 4 12 maintenance mode settings k 4 21 checking clogged points k 3 107 expansion valve k 3 101 fan motor signal line k 3 108 fan speed pulse k 3 109 installation c...

Page 478: ...Air Conditioner s Operation Status and Pressure Running Current k 4 40 D DC Output Overcurrent Instantaneous k 3 72 Decoration Panel k 5 34 defrost operation k 2 18 defrost start setting k 4 36 diameters pipe connections k 1 55 dimensions indoor units k 1 11 outdoor units k 1 3 DIP switches k 4 24 Disassembly and maintenance indoor units k 5 17 outdoor units k 5 3 draft avoidance control 1 k 2 30 ...

Page 479: ...t Grille k 5 102 Removal of Heat Exchanger k 5 106 Removal of the horizontal blade and vertical blade k 5 103 FFQ35 60BV1B Installation of drain pump k 5 49 Removal of air filter k 5 32 Removal of decoration panel k 5 34 Removal of drain pan k 5 46 Removal of drain pump k 5 47 Removal of fan rotor and fan motor k 5 43 Removal of horizontal vane k 5 37 Removal of suction grille k 5 31 Removal of sw...

Page 480: ...moval of Air Flow Control Blade k 5 97 Removal of Drain Pan k 5 90 Removal of Drain Pump k 5 93 Removal of Fan Motor k 5 88 Removal of Fan k 5 86 Removal of Suction Grille k 5 84 Removal of Swing Motor k 5 95 G Gas Shortage Malfunction k 3 85 H H3 k 3 67 H7 k 3 68 H9 k 3 69 Heat Exchanger k 5 54 Horizontal Blade k 5 73 Horizontal Vane k 5 37 I i demand function k 4 28 identification function k 2 8...

Page 481: ... signal k 3 68 Outdoor Unit Fan Motor k 3 62 Radiator Fin Temperature Thermistor k 3 82 radiator fin temperature thermistor k 3 82 remote controller air thermistor k 3 52 Suction Pipe Pressure Sensor k 3 70 thermistor system Between Control PCB and Inverter PCB k 3 69 Transmission system Between Control PCB and Inverter PCB k 3 78 Motor lock compressor k 3 60 indoor unit fan k 3 46 O Open Phase k ...

Page 482: ...tting address for receiver of wireless remote controller k 4 5 address for wireless remote controller k 4 6 ceiling height k 4 15 centralized group No k 4 18 field settings wired remote controller k 4 11 field settings wireless remote controller k 4 12 filter counter k 4 16 low humidity application k 4 30 MAIN SUB when using two remote controllers k 4 17 settings BS k 4 24 changing maintenance mod...

Page 483: ...te Mist k 3 18 Equipment does not Operate k 3 6 Equipment Operates but does not Provide Cooling k 3 14 Equipment Operates but does not Provide Heating k 3 16 Equipment Produces Loud Noise or Shakes k 3 19 Indoor Fan Operates but Compressor does not k 3 8 Remote Controller LCD Displays 88 k 3 21 Swing Flap does not Operate k 3 22 Troubleshooting by LED on Inverter Outdoor Unit PCB k 3 33 Troublesho...

Page 484: ...ESIE04 01 viii Index 3 1 4 5 ...