Mitsubishi Heavy Industries SRK56CE-S1 Technical Manual Download

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132

(j)

Inverter failure diagnosis

If the results of the diagnosis in Item (h) indicate that the inverter is defective, perform the following inspection on the inverter.

(i)

Diagnosis procedure

Is the fuse good?

Is the varistor good?

Fuse is defective

Replace

Varistor is defective

Replace

YES

Is the noise filter good?

Noise filter is defective

Replace

YES

Is DC280V imposed between the
power transistor P and N?

Is there output at CNG, CNH on
the printed circuit bord (CPU)?

Is the voltage at U, V and W of
the power transistor?

Is the diode stack good?

Is condenser good?

Is there conducitvity in the inductor?

The printed circuit board
(CPU) is defective

Replace

The printed circuit board
(POWER) is defective

Replace

The power transistor is
defective

Replace

YES

Condenser is defective

Replace

Inductor is defective

Replace

The diode stack is defective

Replace

YES

Inspect compressor

Summary of Contents for SRK56CE-S1

Page 1: ...NER Split system air to air heat pump type SRK20HD S1 SRK28HD S1 SRK40HD S1 SRK20HC S2 SRK28HC S2 SRK40HC S2 SRK50HE S1 SRK56HE S1 SRK63HE S1 SRK71HE S1 WALL MOUNTED TYPE ROOM AIR CONDITIONER Split system air cooled cooling only type SRK20CD S1 SRK28CD S1 SRK40CD S1 SRK20CC S1 SRK28CC S1 SRK40CC S1 SRK50CE S1 SRK56CE S1 SRK63CE S1 SRK71CE S1 Manual No 06 SRK T 050 updated September 29 2009 ...

Page 2: ...D TYPE ROOM AIR CONDITIONER Split system air to air heat pump type 001 2 WALL MOUNTED TYPE ROOM AIR CONDITIONER Split system air to air heat pump type 137 3 WALL MOUNTED TYPE ROOM AIR CONDITIONER Split system air cooled cooling only type 261 ...

Page 3: ... 1 1 1 SRK20ZD S1 SRK25ZD S1 SRK35ZD S1 SRK50ZD S1 2 1 2 SRK63ZE S1 SRK71ZE S1 70 1 INVERTER WALL MOUNTED TYPE ROOM AIR CONDITIONER Split system air to air heat pump type ...

Page 4: ...tion 17 7 Outline of cooling operation 19 8 Outline of dehumidifying operation 20 9 Outline of automatic operation 22 10 Economical operation 22 11 Protective control function 22 1 1 5 APPLICATION DATA 28 1 Selection of location for installation 29 2 Installation of indoor unit 30 3 Installation of outdoor unit 32 4 Refrigerant piping 32 5 Test run 34 6 Precautions for wireless remote controller i...

Page 5: ...nce with the fuzzy rules in order to control the air capacity and the inverter frequency c Remote control flap The flap can be automatically controlled by operating wireless remote control Air scroll AUTO Flap operation is automatically control Swing This will swing the flap up and down Memory flap Once the flap position is set the unit memorizes the position and continues to operate at the same p...

Page 6: ...ess Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 47 m Gas line 0 40 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size...

Page 7: ...ration switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 47 m Gas line 0 40 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 co...

Page 8: ...ration switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 47 m Gas line 0 40 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 co...

Page 9: ...ation control Operation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 47 m Gas line 0 40 m Insulation Necessary Both sides Drain hose Connectable Power sourc...

Page 10: ...Inching prevention 5 minutes Max 4 times h Inching prevention 10 minutes ON and OFF interval Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Max 10m Outdoor unit is higher Max 10m Outdoor unit is lower Max 25m Max 15m Outdoor unit is higher Max 15m Outdoor unit is lower Item Models VIEW A 117 5 580 117 5 148 5 216 5 216 5 8 2...

Page 11: ...quid ø6 35 1 4 Service valve Gas ø12 7 1 2 Ground terminal 124 34 6 2 0 û 2 0 û 42 7 100 3 15 640 14 Model SRC50ZD S1 Unit mm 290 540 14 4 47 4 42 6 264 5 71 404 5 510 720 17 8 Drain holes 50 12 39 7 99 9 340 312 5 13 5 14 139 2 16x12 61 9 139 3 33 3 Flare connection ø6 35 1 4 Service valve Liquid 4 0 4 0 Flare connecting ø9 52 3 8 Service valve Gas Terminal block ...

Page 12: ...Capillary tube Strainer Accumulator Service valve Gas Electronic expansion valve Piping Gas ø9 52 Model SRK50ZD S1 Outdoor unit Indoor unit Room temp sensor Heat exchanger Flare connection Heat exchanger sensor Piping Liquid ø6 35 Check joint 4 way valve Service valve Liquid Flare connection Discharge pipe temp sensor Cooling cycle Heating cycle Outdoor air temp sensor Heat exchanger Heat exchange...

Page 13: ...osting on the outdoor heat exchanger How to obtain the cooling and heating capacity Example The net cooling capacity of the model SRK20ZD S1 with the piping length of 15m indoor wet bulb temperature at 19 0 C and outdoor dry bulb temperature 35 C is Net cooling capacity 2000 0 975 1 0 1950 W Length 15m Factor by air temperatures 15 ISO T1 Standard Condition Outdoor air W B temperature C W B 10 0 5...

Page 14: ...CND 1 2 3 N P Power transistor 20S 52C EEV FMo DS CM 1 2 3 FM I SM Display Wireless R Amp Black Brown Red Blue White Yellow Green BK BR RD BL WH Y GN Color symbol Meaning of marks Symbol Parts name CM Compressor motor F Fuse FM I F Fan motor Indoor FMo F an motor Outdoor SM RE Flap motor Reactor Symbol Parts name Th 1 Room temp sensor Th 2 Heat exchanger sensor Indoor unit Th 4 Heat exchanger sens...

Page 15: ... symbol Meaning of marks Symbol Parts name CFo Capacitor for FMo CM Compressor motor F Fuse FM I F Fan motor Indoor FMo F an motor Outdoor SM RL L Flap motor Inspection lamp Inductor Symbol Parts name Th 1 Room temp sensor Th 2 Heat exchanger sensor Indoor unit Th 3 Humidity sensor Th 4 Heat exchanger sensor Outdoor unit Th 5 Outdoor air temp sensor Th 6 Discharge pipe temp sensor Symbol Parts nam...

Page 16: ...ATURE button This button sets the room temperature This button changes the present time and TIMER time CANCEL button This button cancels the ON timer and OFF timer RESERVE button This button sets the present time and TIMER time S Indication section OPERATION MODE indicator Indicates selected operation with lamp Auto Cool Heat Dry TEMPERATURE indicator Indicates set temperature Does not indicate te...

Page 17: ...low Illuminates during TIMER operation HI POWER light green Illuminates during HI POWER operation RUN HOT KEEP light green Illuminates during operation Flashes at air flow stop due to the HOT KEEP 3 Power blackout auto restart function a Power blackout auto restart function is a function that records the operational status of the air conditioner immediately prior to it being switched off by a powe...

Page 18: ...line Rapid movement Thin line Slow movement Stops for approximately 5 seconds in the horizontal position s During heating t operation Stops for approximately 5 seconds in this position Thick line Rapid movement Thin line Slow movement Horizontal blowing COOL DRY Slant forward blowing HEAT 5 Comfortable timer setting If the timer is set at ON when the operation select switch is set at the cooling o...

Page 19: ...hin the range of selected air flow ii When the defrosting protection device etc is actuated operation is performed in the corresponding mode iii Outdoor unit blower operates in accordance with the inverter command speed Model SRK20 25 35ZD S1 SRK50ZD S1 Item Inverter speed 0rps Comp stopped 10 rps 10sec 0rps Comp stopped Indoor fan Hot keep normal mode 1st speed Outdoor fan Stop 2nd speed 1min sto...

Page 20: ... C 50 type 4 0 C 5 During continuous compressor operation In addition when the speed command from the indoor controller of the indoor unit during heating operation has counted 0 rps 10 times or more and all conditions of 1 2 and 3 above are satisfied note that when the temperature for Th4 is 5 C or less 62 rps or more 4 C or less less than 62 rps defrost operation is started 2 Operation of functio...

Page 21: ...e 70 rps 1 0 Corresponding to speed OFF OFF ON 4 way valve Final defrost operation Defrost control Hot keep Indoor unit Outdoor unit 75 sec Hot keep 60 sec Normal heating operation restored Defrost end Th4 20 C 10 minutes Defrost operation Defrost operation preparation 2nd speed 2nd speed 7 Outline of cooling operation a Operation of major functional components in Cooling mode 50 type Item Indoor ...

Page 22: ...top Notes 1 Protective functions will actuate with priority even during the HI POWER operation 2 Room temperature is not adjusted during the HI POWER operation 8 Outline of dehumidifying operation a After operating the indoor blower for 20 seconds from immediately after the start of operation the indoor temperature is checked and based on the result of check the cooling oriented dehumidifying or h...

Page 23: ...door fan Determination of cooling oriented dehumidifying operation range Temperature check 5 min 5 min 5 min 5 min Operation pattern O L M Low 1 0 High Room temperature Setting temperature deg Operation range Heating operation O range L range M range 4th speed OFF 3rd speed OFF 4th speed 2nd speed 1st speed 20 25 35 type 38 50 type 28 20 25 35 type 30 50 type 15 20 25 35 type 48 50 type 44 0 50 ty...

Page 24: ...31 32 10 Economical operation ECONO button on remote controller ON a The set temperature is raised by 1 5ºC 0 5ºC every one hour at cooling operation and lowered by 2 5ºC Steps of 1ºC 1ºC and 0 5ºC every one hour at heating operation to continue the operation with the following contents b Detail of operation 11 Protective control function a Frost prevention for indoor heat exchanger During cooling...

Page 25: ... and outdoor fans are not changed Notes 1 When the command of exceeding 30 rps is directed during 30 rps forced operation the unit follows it Note 2 Values in are for Type 50 e Compressor protection start i When the indoor unit calculated speed is 64 rps or over at operation start the unit is operated with 64 rps for 1 minute and 45 seconds All models After that when the calculated speed is 96 rps...

Page 26: ...2nd speed 20 25 35 types only 4 The lower limit of control speed is set to 40 35 rps and even if the calculated result becomes lower than that after fuzzy calculation the speed is kept to 40 35 rps However when the thermo becomes OFF the speed is reduced to 0 prs iii Reset conditions When the outdoor air temperature drops below 16ºC Note 1 Values in are for Type 50 k Cooling overload protective co...

Page 27: ...re operation during heating ii Detector Indoor unit heat exchanger sensor Th2 iii Detail of operation m Compressor overheat protection i Purpose It is designed to prevent deterioration of oil burnout of motor coil and other trouble resulting from the compressor overheat ii Detail of operation 1 Speeds are controlled with temperature detected by the sensor mounted on the discharge pipe Discharge pi...

Page 28: ...tent When the command speed upper limit is set at 70 rps c Reset conditions When the temperature sensed by the outdoor heat exchanger sensor Th4 becomes 7ºC or higher q Stop mode i Operating conditions When the operation mode is changed when the dehumidifying operation is changed from the heating oriented mode to the cooling oriented mode or vice versa or when the inverter speed turns to 0 rps Whe...

Page 29: ...Heating heating Cooling cooling oriented dehumidifying oriented dehumidifying oriented dehumidifying oriented dehumidifying Stop Full stop Stop Full stop Stop Restart Stop Restart 0 rps command 0 rps command 0 rps command 0 rps command Inverter speed Indoor fan Indoor power relay Outdoor fan 4 way valve Command speed 0 Speed dependent OFF ON OFF 3 min 1 3 min 1 3 min 2 min 55 sec Hot keep 2 min 55...

Page 30: ...se of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel It s improper installation can also...

Page 31: ... unit s operating sound will not be a nuisance to the neighborhood vi A place where servicing space can be secured vii A place where vibration will not be enlarged viii In heating operation snow deposit on the heat exchanger of outdoor unit must be prevented for keeping the normal performance capacity 1 Snow hood on outdoor unit as in drawing will reduce the frequency of defrost operation When ins...

Page 32: ... of 5 degree from indoor side to outdoor side Indoor side Outdoor side Cut off the sleeve collar in case of drawing piping out to rear Cut off the sleeve collar that can be seen from beneath the unit Wall thickness 1 5 cm Indoor side Outdoor side Turn to tighten Paste View of sleeve when installed Inclined flange Sealing plate Sleeve Indoor side Outdoor side Look for the inside wall structures Int...

Page 33: ...is inserted in sufficiently water leakage could re sult Since this air conditioner has been designed to collect dew drops on the rear surface to the drain pan do not attach the power cord above the gutter Gutter Wall Pipe accommodation section 1 Connect the connection wire securely to the terminal block If the wire is not affixed completely contact will be poor and it is dangerous as the terminal ...

Page 34: ...trong winds secure the unit firmly with foundation bolts wire etc b Connection of indoor and outdoor connecting wiring i Connect the wiring according to the number of the indoor terminal block Mis wiring may cause the burning damage and make sure to connect correctly Notes 1 To prevent the mis operation by noise when the connecting wire too long for indoor and outdoor Please hide the fixed wire in...

Page 35: ...Indoor unit side Connect firmly gas and liquid side pipings by Torque wrench Outdoor unit side Connect firmly gas and liquid side pipings by Torque wrench Specified torquing value Liquid side ø6 35 14 0 18 0N m 1 4 1 8kgf m Gas side ø9 52 34 0 42 0N m 3 4 4 2kgf m ø12 7 49 0 61 0N m 4 9 6 1kgf m Use one more spanner to fix the valve Spanner for fixing the piping Torque wrench Specified torquing va...

Page 36: ... off or was turned to fan operation position the unit will not go into operation in order to protect the compressor c Insert in electric plug into the electric outlet and make sure that it is not loose i When there is something wrong with the electric outlet and if the insertion of the electric plug is insufficient there may occur a burn out ii It is very important to be careful of above when plug...

Page 37: ... be more or less depending on the installation 3 The coverage may be less or even nil If the sensing element is exposed to strong light such as direct sunlight illumination etc or dust is deposited on it or it is used behind a curtain etc or less 5 m o r l e s s Wireless remote controller 5 m or less Remote controller available in this area Receiver or less 6 Precautions for wireless remote contro...

Page 38: ...nt service valve open c Troubleshooting procedure If the air conditioner does not run at all If the air conditioner does not run at all diagnose the trouble using the following troubleshooting procedure If the air conditioner is running but breaks down proceed to troubleshooting step d Important When all the following conditions are met we say that the air conditioner will not run at all 1 The RUN...

Page 39: ...uble and perform an operation check The air conditioning system is operating normally Replace the faulty component then perform an operation check Identify the faulty component by using the check procedure corresponding to the content of the trouble Using the Service Mode access the self diagnosis displays generated in the past Using the Service Mode access the stop history due to protection contr...

Page 40: ...er heat of compressor When a sensor wire disconnection is detected while operation is stopped If a temperature of 50ºC or lower is detected for 15 seconds it is judged that the wire is disconnected Not displayed during operation Broken heat exchanger sensor wire poor connector connection Outdoor heat exchanger sensor error When an outdoor air temperature sensor wire disconnection is detected while...

Page 41: ...are recorded when trouble occurs so more detailed information can be checked These are the data which display the reason by a stop occurred when the air conditioning system performed protective stops etc in the past Even if stop data alone are generated the system restarts automatically After executing the stop mode while the display is normal the system restarts automatically Data for up to 10 pr...

Page 42: ...e remote controller information at the time the error code was displayed in the past Displays the outdoor air temperature sensor temperature at the time the error code was displayed in the past Displays the outdoor heat exchanger sensor temperature at the time the error code was displayed in the past Displays the discharge pipe sensor temperature at the time the error code was displayed in the pas...

Page 43: ...350 V When it is judged that the power transistor was damaged at the time the compressor started When it is judged that the power transistor was damaged at the time the compressor started When PWM calculation results of 0 continue for 3 minutes or longer When PWM calculation results of 90 and an input current lower than the set value continue for 3 minutes or longer When an abnormal stop occurs 3 ...

Page 44: ...6 rps Protective control operation Indoor unit fan motor is abnormal Discharge pipe sensor is abnormal anomalous stop Indoor heat exchanger sensor is abnormal anomalous stop Outdoor heat exchanger sensor is abnormal anomalous stop Anti condensation control Anti frost control High pressure control Compressor overheating protection control Refrigeration cycle system protective control 16 rps or high...

Page 45: ...r of times in If no is displayed the error display shows that the trouble has occurred once Notes 3 Automatic Recovery Does not occur Automatic recovery occurs iv Remote controller information tables 1 Operation switching RUN light Operation switching Display pattern when in service mode Operation switching when there is an abnormal stop 0 1 2 4 AUTO DRY COOL HEAT 2 Fan speed switching TIMER light...

Page 46: ...6 46 56 66 76 86 96 57 47 37 27 17 7 7 17 27 37 47 57 67 77 87 97 58 48 38 28 18 8 8 18 28 38 48 58 68 78 88 98 59 49 39 29 19 9 9 19 29 39 49 59 69 79 89 99 No does not sound If no data are recorded error code is normal the display for each sensor becomes as shown below Sensor name Room temperature sensor temperature Indoor heat exchanger sensor temperature Outdoor air temperature sensor temperat...

Page 47: ... 94 114 134 56 36 16 16 36 56 76 96 116 136 58 38 18 18 38 58 78 98 118 138 No does not sound If no data are recorded error code is normal the display for each sensor becomes as shown below Sensor name Discharge pipe sensor temperature Sensor value displayed when the error code is normal 64 C Example Discharge pipe temperature 122ºC In the case of discharge pipe data multiply the reading value by ...

Page 48: ...eat exchanger sensor temperature on fourth previous occasion Remote controller information on fourth previous occasion Outdoor air temperature sensor temperature on fourth previous occasion Outdoor heat exchanger sensor temperature on fourth previous occasion Discharge pipe sensor temperature on fourth previous occasion Error code on fifth previous occasion Room temperature sensor temperature on f...

Page 49: ...fective inverter Defective inverter Secure space for suction and blow out If check results are normal compressor is locked Is connector connection good YES YES NO NO Replace PCB Correct connection Replace sensor Is sensor resistance value good Sensor temperature characteristics Room temp indoor unit heat exchanger temp outdoor unit heat exchanger temp outdoor air temp Temperature C Resistance kΩ 3...

Page 50: ...ils Defective inverter Is compressor wiring connected securely Connect securely Inspect compressor YES YES NO NO Is Discharge pipe sensor resistance value good Page 47 Is sufficient quantity of refrigerant circulated Defective inverter YES YES NO NO YES NO Gas shortage Connector connection check resistance value check replacement of discharge pipe sensor Does trouble persist after charging gas Clo...

Page 51: ...plied between 1 2 on the outdoor side terminal block Defective indoor unit PCB Check crossover wires Is there any problem on the power supply line fuse reactor capacitor etc Replace fuse reactor or capacitor Defective outdoor unit PCB Check crossover wires Indoor fan motor error Defective fan motor defective PCB YES YES NO NO Is connector connection good Is voltage applied to fan motor Defective f...

Page 52: ...frosting is not operated All modes Operation mode System can be operated normally Defrosting is performed for 10 minutes at approx 1 hour System can be operated normally Defrosting is performed for 10 minutes at intervals of approx 1 hour Compressor stop There is no inverter output Heat exchanger Outdoor air temperature sensor Discharge pipe sensor Compressor overload protection is disabled Can be...

Page 53: ...Is DC 0 12V detected between terminals 2 3 on terminal block Replace fuse Replace PCB Replace PCB i How to make sure of remote controller Note 1 Check method of remote controller a Press the reset switch of the remote controller b If all LCD are displayed after zero 0 display it is basically normal LO MED HI AUTO HI POWER ECONO ON OFF AM PM 1 Is remote controller normal YES Again pushing operating...

Page 54: ...plied to the electronic expansion valve when the valve opening is being changed Red to White Red to Orange Brown to Yellow Brown to Blue Normal if there is approximately DC 5 V 10 seconds after the power asupply is turned on Color symbol BK RD WH Y GN Black Red White Yellow Green Inspection of input to PCB Check the voltage between terminals 1 2 on the terminal block It is normal if AC 220 230 240...

Page 55: ...40V is detected Inspection of serial signal Check the voltage between terminals 2 3on the terminal block It is normal if the needle swing in the range of DC 0 Approx 12V 1 For about 50 seconds After being switched on the will be a delay of approximately one minute depending on the conditions Use a tester with a needle indicator for the inspection Do not use a digital tester Check in the AC 300 vol...

Page 56: ...n immediately retighten it after observing that gas is blow out from the loosened portion v Open the valve 1 and 3 after discharging air from the charge hose A then the liquid refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cylinder upright to let liquid refrigerant flow into the unit vi When refrigerant has been charged into the system to some extent re...

Page 57: ...s Pseudo azeotropic characteristics R410A is a pseudo azeotropic mixed refrigerant composed of two constituents R32 and R125 Quasi azeotropic condition refers to a state in which the dew point curve and boiling point curve gas liquid equilibrium curves pressure constant almost lie on top of each other and a multi constituent refrigerant having this chemical characteristic incurs less composition c...

Page 58: ... poisonous gas may occur 5 When an air conditioning system charged with a large volume of refrigerant e g multi type air conditioner is installed in a small room it is necessary to exercise care so that even when refrigerant leaks its concentration does not exceed the marginal level If the refrigerant gas leakage occurs and its concentration exceeds the marginal level an oxygen starvation accident...

Page 59: ...rence outer diameter Minimum joint thickness diameter of copper pipe jointed mm mm 1 4 6 35 0 50 3 8 9 52 0 60 1 2 12 70 0 70 5 8 15 88 0 80 b Processing of piping materials When performing the refrigerant piping installation care should be taken to ensure that water or dust does not enter the pipe interior that no other oil other than lubricating oils used in the installed air conditioner is used...

Page 60: ...ng nut type 1 4 6 35 0 8 0 0 5 1 0 1 5 1 5 2 0 3 8 9 52 0 8 0 0 5 1 0 1 5 1 5 2 0 1 2 12 70 0 8 0 0 5 1 0 1 5 2 0 2 5 5 8 15 88 1 0 0 0 5 1 0 1 5 2 0 2 5 Table 6 Dimensions related to flare processing for R22 Nominal Outer diameter Thickness A mm diameter mm mm Flare tool for R410A Conventional flare tool Clutch type Clutch type Wing nut type 1 4 6 35 0 8 0 0 5 0 5 1 0 1 0 1 5 3 8 9 52 0 8 0 0 5 0...

Page 61: ...and which contains less contaminants It is necessary to carefully treat store copper pipes so that they are not collapsed deformed or damaged Due care must also be exercised so that foreign matters such as dust and water do not enter the pipe interior A piping set s open end is sealed with a cap etc When storing it make sure that it is sealed securely When storing a cladded copper pipe or bare cop...

Page 62: ...ing the connected parts As brazing is molten between the joined surfaces to yield high adhesive strength it is necessary to secure a wide enough space to be joined and also an adequate clearance between the joined surfaces Copper pipe joints minimum insertion depths outer pipe diameters and clearances between outer and inner pipe diameters are as shown in Table 10 In the case of bronze brazing fil...

Page 63: ...tassium fluoride potassium chloride and sodium fluoride to the borax boric acid compound Cautions 1 Remove the flux after brazing 2 When chlorine contained in the flux stays within the pipe the lubricating oil deteriorates So use a flux which does not contain chlorine 3 When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water iv Brazing As b...

Page 64: ... wet cloth and 3 by means of heat absorbent 4 Movement during brazing Eliminate all vibration during brazing to protect brazed joints from cracking and breakage 5 Oxidation preventive In order to improve the brazing efficiency various types of antioxidant are available on the market However the con stituents of these are widely varied and some are anticipated to corrode the piping materials or adv...

Page 65: ...wo types of electronic balance for refrigerant charging are available one for 10kg cylinder and the other for 20kg cylinder Electronic balance for 10kg cylinder precision 2g Electronic balance for 20kg cylinder precision 5g Refrigerant is charged manually by opening closing the valve 4 Torque wrench for nominal diameters 1 2 and 5 8 Along with changes in flare nut sizes for enhanced pressure resis...

Page 66: ... refrigerant cylinder According to the charge hose s cap size a charge port with 1 2 UNF 20 threads per inch and corresponding packing are required 10 Gas leakage detector A high sensitivity gas leakage detector exclusive for HFC refrigerant is used In the case of R410A the detection sensitivity is about 23g per year ii General tools 1 Vacuum pump 2 Torque wrench for 1 4 opposite side 17 mm for 1 ...

Page 67: ... to make setting so that liquid can be charged When using a cylinder equipped with a siphon liquid can be charged without turning it upside down 2 Connect the gauge manifold s charge hose to the electronic balance s connecting port 3 2 3 Open the refrigerant cylinder s valve and after opening the charging valve a little close it 1 2 4 After making zero 0 adjustment open the charging valve and by o...

Page 68: ...e the indoor outdoor units Caution When storing the indoor unit piping in its original position be careful not to break the piping ii Installing the unit 1 Proceed with the installation following the steps described in b New installation work d Replacing the unit Never use the existing refrigerant piping Use a brand new refrigerant piping 1 when replacing the air conditioner using the conventional...

Page 69: ...ng function float switch moisture indicator drier and other accessory functions should be adjusted or replaced where necessary 4 Electrical circuit 2 Checking the accessories to the refrigerant recovering equipment ii Preparations for recovering procedures 1 Installation of refrigerant recovering equipment Install the equipment in a place which satisfies the following requirements as much as possi...

Page 70: ...ssories tools are required Shown below are standard accessories i Recovering cylinder Use a recovering cylinder designated by the equipment manufacturer A detachable cylinder must be such that it complies with the laws and regulations concerned Do not use an ordinary cylinder as a recovering cylinder Note 1 A cylinder available when R410A was purchased is a borrowed one Note 2 As a cylinder availa...

Page 71: ...piercing valve 1 A tool used to make a hole for recovery in the copper pipe when recovering R410A from equipment which has no port for charging or recovering gas Various types are available on the market and given various names 2 As the piercing edge tends to wear it is necessary to treat this valve as semi expendables 3 As vacuum rises air tends to be inhaled from the hole So care must be exercis...

Page 72: ...dehumidifying operation 87 11 Outline of automatic operation 88 12 Outline of fan operation 89 13 Outline of clean operation 89 14 Outline of allergen clear operation 89 15 ECONOMY operation 91 16 External control remote display control of input signal 91 17 Operation permission prohibition control 92 18 Protective control function 93 1 2 5 APPLICATION DATA 100 1 Selection of location for installa...

Page 73: ...quency c Remote control flap louver The Flap louver can be automatically controlled by operating wireless remote control Flap swing The flaps swing up and down successively Louver swing The louvers swing left and right successively Multi directional Air Flow Activating both up down air swing and left right air swing at the same time results in a multi directional air flow Memory flap Once the Flap...

Page 74: ...ter thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ15 88 5 8 Connecting method Flare connecting Attached length of piping Liquid line 0 70m Gas line 0 63m Insulation Necessary Both sides Drain hose Connectable Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth cab...

Page 75: ...ure control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ15 88 5 8 Connecting method Flare connecting Attached length of piping Liquid line 0 70m Gas line 0 63m Insulation Necessary Both sides Drain hose Connectable Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cor...

Page 76: ...of rating Frequency of ON OFF cycle Max 7 times h Inching prevention 5 minutes ON and OFF interval Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Max 20m Outdoor unit is higher Max 20m Outdoor unit is lower Item Models VIEW A A 17 3 60 150 4 43 5 55 64 48 9 Piping hole right left 3 248 55 4 19 51 2 55 Terminal block 1090 Uni...

Page 77: ...32 223 60 15 340 61 47 5 19 380 19 418 Outdoor unit Indoor unit Heat exchanger Room temp sensor Humidity sensor Heat exchanger Flare connecting Heat exchanger sensor Piping Liquid ø6 35 Piping Gas ø15 88 Check joint 4 way valve Service valve Liquid Flare connecting Discharge pipe temp sensor Cooling cycle Heating cycle Outdoor air temp sensor Heat exchanger sensor Compressor uffler M Capillary tub...

Page 78: ...o obtain the cooling and heating capacity Example The net cooling capacity of the model SRK63ZE S1 with the piping length of 15m indoor wet bulb temperature at 19 0 C and outdoor dry bulb temperature 35 C is Net cooling capacity 6300 0 975 1 0 6143W SRK63ZE S1 Length 15m Factor by air temperatures Cooling Heating 22 20 18 16 14 0 6 0 7 0 8 0 9 1 0 1 2 1 1 1 3 0 5 10 15 Applicable range Depends on ...

Page 79: ...bol Black Blue Orange Yellow Green White Red Green Yellow Meaning of marks Symbol Parts name Symbol Parts name Symbol Parts name CM F FM I FM O SM LM 1 2 Th 1 Th 2 Compressor motor Fuse Fan motor Indoor Fan motor Outdoor Flap motor Louver motor Room temp sensor Heat exch sensor Indoor unit Th 3 Th 4 Th 5 Th 6 ZNR 20S EEV DS Humidity sensor Heat exch sensor Outdoor unit Outdoor air temp sensor Disc...

Page 80: ... TIMER operation AIR FLOW LEFT RIGHT button This button changes the air flow left right mode CANCEL button This button cancels the ON timer OFF timer and SLEEP operation OFF TIMER button This button selects OFF TIMER operation OPERATION MODE indicator Indicates selected operation with lamp Auto Cool Heat Dry Fan TEMPERATURE indicator Indicates set temperature Does not indicate temperature when ope...

Page 81: ...o make silent mode operation settings RESET switch Press this switch while making settings to go back to the previous operation This switch is also used to reset the FILTER CLEANING message display Press this switch after cleaning the air filter Central control display Displayed when the air conditioning system is controlled by the option controller Timer operation display Displays the settings re...

Page 82: ... light green Illuminates during operation Brinks at air flow stop due to the HOT KEEP 3 Power blackout auto restart function a Power blackout auto restart function is a function that records the operational status of the air conditioner immediately prior to it being switched off by a power cut and then automatically resumes operations at that point after the power has been restored b The following...

Page 83: ...wireless remote control a i Swing flap Flap moves in upward and downward directions continuously ii Swing louver Louver moves in left and right directions continuously iii When not operating The flap returns to the position of air flow directly below when operation has stopped b Multi directional Air Flow up down air and left right air scroll Activating both up down air swing and left right air sw...

Page 84: ...ure of room temperature sensor and the setting temperature Max 60 minutes Operation mode Operation start time correction value Min 3 Room temp Setting temp 1 Room temp Setting temp 3 Room temp Setting temp 1 At cooling 5 No change 5 3 Setting temp Room temp 2 Setting temp Room temp 3 Setting temp Room temp 2 At heating 5 No change 5 Notes 1 At 5 minutes before the timer ON time operation starts re...

Page 85: ...ithin the range of selected air flow Model SRK63ZE S1 SRK71ZE S1 Air flow selection Inverter command speed 12 88rps 12 95rps Air flow Depends on inverter command speed Inverter command speed 12 88rps 12 95rps Air flow 9th speed fixed Inverter command speed 12 88rps 12 95rps Air flow 7th speed fixed Inverter command speed 12 74rps 12 80rps Air flow 5th speed fixed ULO Inverter command speed 12 40rp...

Page 86: ...rature and the outdoor heat exchanger temperature sensor temperature is 7ºC The outdoor air temperature 17 C The difference between the outdoor air temperature sensor temperature and the outdoor heat exchanger temperature sensor temperature is 5ºC 5 During continuous compressor operation Defrost operations shall not be performed from 10 minutes after the compressor begins running 2 In addition whe...

Page 87: ...RK71ZE S1 Item Inverter command speed 88 rps 95 rps Indoor fan motor Hot keep M mode max 10th speed Outdoor fan motor 6th speed Notes 1 Room temperature is not adjusted during the HIGH POWER operation 2 Protective functions will actuate with priority even during the HIGH POWER operation indoor unit Hot keep 120sec 120sec 40sec 40sec Final defrost operation Defrost operation 1 Defrost end Th4 15 C ...

Page 88: ... speed obtained by the fuzzy calculation is less than 24 rps 2 Detail of operation b Air flow selection i Speed of inverter changes within the range of selected air flow ii When any protective function actuates the operation is performed in the mode corresponding to the function iii Outdoor blower is operated in accordance with the inverter command speed iii Cooling HIGH POWER operation HI POWER b...

Page 89: ... checked at 5 minute intervals after selecting the cooling or heating oriented dehumidifying in order to determine the operation range Low 1 0 2 High Room temperature Setting temperature deg High humidity regions I I F F E F D E Low humidity regions C C B C A B Note 1 Figures in the parentheses show the values at ECONOMY operation Humidity sensor s set values 55 70 Relative humidity High humidity ...

Page 90: ...a Determination of operation mode The unit checks the room temperature and the outdoor air temperature after operating the indoor and outdoor blowers for 20 seconds determines the operation mode and the room temperature setting correction value and then begins in the automatic operation Heating Dehumidifying Cooling Room temperature C Outdoor temperature C 27 5 25 5 19 5 18 30 b The unit checks th...

Page 91: ...ommand speed Indoor fan motor Outdoor fan motor Flap and louver 2nd speed 8th speed 0rps OFF Depend on the flap and louver control 6th speed 4th speed 2nd speed 2nd speed AUTO HI MED LO ULO ECONO Functional components Fan speed switching Inverter command speed 0 rps Indoor fan motor 1st speed Outdoor fan motor OFF Flap and louver Fully closed 0 20 4 Operation pattern2 Operation pattern1 Outdoor te...

Page 92: ...Inverter command speed 20 rps Indoor fan motor 2nd speed Outdor fan motor 3rd speed Flap and louver Horizoc Center 4 way valve OFF Note 1 During cooling operation safety control frost prevention control and cooling overload pro tective control are generally not applicable iii Heating cycle operation 1 Operation content T1 T2 42min Time Stop Compressor operation 2 Operation time After cooling opera...

Page 93: ...ing output connectors CNT are provided on the printed circuit board of indoor unit i Operation output Power to engage DC 12V relay provided by the customer is outputted during operation ii Heating output Power to engage DC 12V relay provided by the customer is outputted during the heating operation iii Compressor ON output Power to engage DC 12V relay provided by the customer is outputted while th...

Page 94: ...mote control signal line ii The air conditioner operation is stopped when the CnT input is changed from ON to OFF d When the operation permission prohibition mode is set to effective by the indoor function setting selected by the remote control the operation depends on a above When the jumper wire J3 is short circuited Normal operation is enable when shipping When CnT input is set to ON the operat...

Page 95: ... minutes carry out air flow control a Up down air flow When selecting other than Up down swing or multi directional air flow compel flat orientation b Left right air flow When selecting other than Left right swing or multi directional air flow compel centralized orientation iii Reset conditions When either of the following conditions is satisfied 1 The humidity sensor value is less than 63 2 The i...

Page 96: ...the speed is kept to 30 rps However when the thermo becomes OFF the speed is reduced to 0 rps iii Reset conditions When either of the following condition is satisfied 1 When the outdoor air temperature becomes 40ºC or less 2 When the inverter command speed is 0rps e Cooling low outdoor temperature protective control I i Operating conditions When the outdoor air temperature sensor Th5 is 22ºC or lo...

Page 97: ...or unit heat exchanger temperature 56ºC The inverter command speed is been maintained and the operation has continued for more than 20 seconds at the same speed it returns to the normal heating operation Note 1 Indoor fan retains the fan tap when it enters in the high pressure control Outdoor fan is operated in accordance with the speed iv Reset conditions When the indoor heat exchanger temperatur...

Page 98: ...otection start i When the indoor unit calculated speed is 30rps or over at operation start the unit is operated with 30rps for 1 minute and 45 seconds After that when the calculated speed is 38rps or over the unit is operated with 38rps for 1minute and 15 seconds After that when the calculated speed is 46rps or over the unit is operated with 46rps for 1minute After that when the calculated speed i...

Page 99: ...g 30 rps forced operation the unit follows it n Current cut i Purpose Inverter is protected from overcurrent ii Detail of operation Output current from the converter is monitored with a shunt resistor and if the current exceeds the setting value the compressor is stopped immediately Operation starts again after a delay time of 3 minutes o Outdoor unit failure This is a function for determining whe...

Page 100: ...when the inverter command speed is maintained for 3 minutes when the temperature is 90 ºC or greater but less than 100 ºC the speed is raised by 1 rps and kept at that speed for 3 minutes This process is repeated until the calculated speed is reached 2 If the temperature of 110ºC is detected by the sensor on the discharge pipe then the compressor will stop immediately When the discharge pipe tempe...

Page 101: ...e function is actuated ii Detail of operation Functional components Operation Inverter command speed Decision rps EEV control Fully closed 0 rps OFF According to outdoor rps According to indoor rps OFF Set location OFF ON Outdoor unit fun Indoor unit fun 4 way valve Flap EEV Cooling cooling oriented dehumidifying Heating heating oriented dehumidifying Cooling cooling oriented dehumidifying Heating...

Page 102: ...of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it Improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel It s improper installation can also re...

Page 103: ...peration noise will cause no trouble A place where there is possibility of flammable gas leakage A place exposed to strong wind vi Do not install the unit near the seaside or where there is possibility of chlorine gas generation Model All models Item One way piping length R 30 m Outdoor unit is lower 20 m Outdoor unit is higher 20 m Left side Right side 5 cm 10 cm 1 5 cm 6 5 cm Air inlet Air inlet...

Page 104: ... length Adjust so that board will be level by turning the board with the standard hole as the center Standard hole iii Install the sleeve Inserting sleeve Sleeve Inclined Sealing plate Note 1 Drill a hole with incline of 5 degree from indoor side to outdoor side Indoor side Outdoor side Cut off the sleeve collar in case of drawing piping out to rear Cut off the sleeve collar that can be seen from ...

Page 105: ...les H05RNR4G1 5 Example H Harmonized cable type 05 300 500 volts R Natural and or synth rubber wire insulation N Polychloroprene rubber conductors insulation R Standed core 4 Number of conductors G One conductor of the cable is the earth conductor yellow green 1 5 Section of copper wire mm2 Wiring Clamp Lid Terminal block When the hose is extended to left and taken out from the rear center Piping ...

Page 106: ...n it is exposed indoor Drain hose iii Fixing of indoor unit How to remove the indoor unit from the installation board 1 Push up at the marked portion of the indoor unit base lower latch and slightly pull it toward you both right and left hand sides The indoor unit base lower latch can be removed from the installation board 2 Push up the indoor unit upward So the indoor unit will be removed from th...

Page 107: ... Outdoor unit side Remove the flared nuts on both liquid and gas sides Remove the flared nuts on both liquid and gas sides Install the removed flared nuts to the pipes to be connected then flare the pipes Dimension A Liquid side φ6 35 9 1 mm Gas side φ15 88 19 7 mm Press Remove Remove Do not turn b Connection of refrigerant piping Indoor unit side Connect firmly gas and liquid side pipings by Torq...

Page 108: ...itional refrigerant charge by weight after refrigerant piping completion Additional charge amount per meter 25g m Example How much amount of additional charge for 25m piping 25 15 m 25g m 250g 250g for additional charge d Insulation of connecting portion i Cover the connecting portion of the refrigerant piping with the pipe cover and seal them If neglecting to do so moisture occurs on the piping a...

Page 109: ...sure MPa Temp difference between return air and supply air C High pressure MPa 220 230 240V Note 1 The data are measured at following conditions Ambient air temperature Indoor side Cooling 27 C DB 19 C WB Heating 20 C DB Outdoor side Cooling 35 C DB 24 C WB Heating 7 C DB 6 C WB 0 0 2 0 4 0 6 0 8 1 1 2 1 4 15 20 25 30 35 40 45 50 CAPACITY RATIO Hi Me Lo ULo Rated 0 5 0 6 0 7 0 8 0 9 1 1 1 1 2 1 3 ...

Page 110: ...lation 3 The coverage may be less or even nil If the sens ing element is exposed to strong light such as direct sunlight illumination etc or dust is deposited on it or it is used behind a curtain etc or less 5 m o r l e s s Wireless remote control 5 m or less Remote control available in this area Receiver or less 6 Precautions for wireless remote control installation and operation a Wireless remot...

Page 111: ...x Remove the screw the latch and the band Cut the jumper printed WIRED REMOCON attached on the board It is impossible to control by the wireless remote control after cutting the jumper Install the upper box v Connect the wire Connect the wired remote control and super link wire Please refer to the installation manual of at tachment in wired remote control for details Each wire can be connected the...

Page 112: ...e Replace the top casing as before f Use a cord clamp to attach the remote con trol cord to the wall g Set the functions according to the types of in door unit See Section Function Setting Thin walled part Upper Lower Lower case Upper Lower Lower case Upper Lower Board Wiring X Y Z Red White Black Upper case Remote control cord Electrical box Not included Upper Lower Cable outlet Lower case Upper ...

Page 113: ...8 09 10 Function number A Default setting Hi CEILING SET FILTER SIGN SET POSITION EXTERNAL INPUT SET ROOM TEMP OFFSET FAN CONTROL FREEZE PREVENT TEMP FREEZE PREVENT CONTROL Heating room temperature offset Heating fan control Louver control setting STANDARD Mild mode Hi CEILING 1 Powerful mode NO DISPLAY AFTER 180H AFTER 600H AFTER 1000H 1000H STOP FIX 1 OF 4 4 positiion stop IN MOTION Free stop LE...

Page 114: ... 2 Press either or button Function number A Function description B from the list of remote control unit functions will be displayed one by one Select a desired function 3 Press the SET button The screen display will be switched as follows SETTING Setting C ex AUTO RUN ON 4 Press either or button A list of Settings C will be displayed one by one Select your desired setting 5 Press the SET button Th...

Page 115: ...en followed by SET COMPLETE and the function setting process is completed Then the screen display will be switched to Function number A Function description B so if you want to continue to set another function repeat the stepa as explained above To finish the function setting process please proceed to Step 8 8 Press AIR CON No button The screen display will go back to the indoor unit selection scr...

Page 116: ...ET b Press the button once The display will change to TEMP RANGE c Press the SET button to enter the temperature range setting mode d Using the or button select Hi LIMIT SET or Lo LIMIT SET the press the SET button e If Hi LIMIT SET is selected 1 The display changes from SET UP Hi LIMIT 22ºC flashing 2 Using the button select the upper limit value Display example Hi LIMIT 22ºC flashing 3 Press the...

Page 117: ...nection to the terminal block for remote control polar total length of wires 600 m maximum No Name ot the recommended signal wire 1 Shielding wire 2 Vinylcabtire round cord 3 Vinyl cabtire round cable 4 Control vinyl insulated vinyl sheath cable Master Slave Address SW 3 1 ON Master OFF Slave Shielding wires 100 200 m 0 5 mm2 3 core wires 300 m 0 75 mm2 3 core wires 400 m 1 25 mm2 3 core wires 600...

Page 118: ...erant service valve open c Troubleshooting procedure If the air conditioner does not run at all If the air conditioner does not run at all diagnose the trouble using the following troubleshooting procedure If the air conditioner is running but breaks down proceed to troubleshooting step d Important When all the following conditions are met we say that the air conditioner will not run at all 1 The ...

Page 119: ...e and perform an operation check The air conditioning system is operating normally Replace the faulty component then perform an operation check Identify the faulty component by using the check procedure corresponding to the content of the trouble Using the Service Mode access the self diagnosis displays generated in the past Using the Service Mode access the stop history due to protection control ...

Page 120: ...minutes The air conditioner stops Broken discharge pipe sensor wire poor connector connection Discharge pipe sensor error 4 time flash Keeps flashing The inverter output current compressor motor current exceeds the set value during compressor start The air conditioner stops Compressor locking open phase on compressor output shortcircuit on power transistor closed service valve Current Cut 1 time f...

Page 121: ...stop occurred when the air conditioning system performed protective stops etc in the past Even if stop data alone are generated the system restarts automatically After executing the stop mode while the display is normal the system restarts automatically Data for up to 10 previous occasions are stored Data older than the 10th previous occasion are erased Important In cases where transient stop data...

Page 122: ... remote controller information at the time the error code was displayed in the past Displays the outdoor air temperature sensor temperature at the time the error code was displayed in the past Displays the outdoor heat exchanger sensor temperature at the time the error code was displayed in the past Displays the discharge pipe sensor temperature at the time the error code was displayed in the past...

Page 123: ...n the DC voltage DC 280 V exceeds 350 V When it is judged that the power transistor was damaged at the time the compressor started When it is judged that the power transistor was damaged at the time the compressor started When PWM calculation results of 0 continue for 3 minutes or longer When PWM calculation results of 90 and an input current lower than the set value continue for 3 minutes or long...

Page 124: ...sensor is abnormal anomalous stop Indoor heat exchanger sensor is abnormal anomalous stop Outdoor heat exchanger sensor is abnormal anomalous stop Anti condensation control Anti frost control High pressure control Compressor overheating protection control Refrigeration cycle system protective control 16 rps or higher Phase switching defects U phase Phase switching defects V phase Phase switching d...

Page 125: ...mber of times in If no is displayed the error display shows that the trouble has occurred once Notes 3 Automatic Recovery Does not occur Automatic recovery occurs iv Remote control information tables 1 Operation switching RUN light Operation switching Display pattern when in service mode Operation switching when there is an abnormal stop 0 1 2 4 AUTO DRY COOL HEAT 2 Fan speed switching TIMER light...

Page 126: ...6 46 56 66 76 86 96 57 47 37 27 17 7 7 17 27 37 47 57 67 77 87 97 58 48 38 28 18 8 8 18 28 38 48 58 68 78 88 98 59 49 39 29 19 9 9 19 29 39 49 59 69 79 89 99 No does not sound If no data are recorded error code is normal the display for each sensor becomes as shown below Sensor name Room temperature sensor temperature Indoor heat exchanger sensor temperature Outdoor air temperature sensor temperat...

Page 127: ...4 94 114 134 56 36 16 16 36 56 76 96 116 136 58 38 18 18 38 58 78 98 118 138 No does not sound If no data are recorded error code is normal the display for each sensor becomes as shown below Sensor name Discharge pipe sensor temperature Sensor value displayed when the error code is normal 64 C Example Discharge pipe temperature 122ºC In the case of discharge pipe data multiply the reading value by...

Page 128: ... heat exchanger sensor temperature on fourth previous occasion Remote controller information on fourth previous occasion Outdoor air temperature sensor temperature on fourth previous occasion Outdoor heat exchanger sensor temperature on fourth previous occasion Discharge pipe sensor temperature on fourth previous occasion Error code on fifth previous occasion Room temperature sensor temperature on...

Page 129: ...7 120 1 9 55 14 125 1 6 60 12 130 1 4 65 10 135 1 3 Discharge pipe sensor temperature characteristics Indoor fan motor error Defective fan motor connector poor connection defective PCB Is connector connection good YES NO NO Is the output of the indoor unit s printed circuit board normal Normal NO YES YES Correct connector connection Is DC fan motor resistance value good Replace indoor PCB Replace ...

Page 130: ...of insufficient gas refrigerant Does compressor operation Is capacitor for compressor normal Replace compressor Replace heat exchanger sensor Insufficient gas Is refrigerant amount normal Is heat exchanger sensor resistance value good Is connector for compressor connection good Does trouble persist after charging gas Clogged capillary tube or strainer defective EEV etc Replace capacitor for compre...

Page 131: ...smission Wiring error including power cable defective indoor outdoor unit PCB Does error persist after power reset Are the lines connecting the indoor and outdoor units connected normally Is DC 0 Approx 12V detected between 2 3 terminals on indoor unit terminal block YES YES NO NO YES NO Trouble by transient cause not unit trouble Correct improper wire connection on indoor outdoor unit Defective i...

Page 132: ...ected wire Humidity reading is 0 Operates in the Dry region 12 Disconnected wire Humidity reading is 0 Operates in the Dry region 1 and 2 are short Humidity reading is 100 Operates in the Cooling region circuited Disconnected wire Short Circuit Remark Do not perform a continuity check of the humidity sensor with a tester If DC current is applied it could damage the sensor Humidity sensor element C...

Page 133: ...S NO NO NO ii Indoor unit fan motor check procedure This is a diagnostic procedure for determining if the indoor unit s fan motor or the circuit board is broken down 1 Indoor unit printed circuit board output check a Turn off the power b Remove the front panel then disconnect the fan motor lead wire connector c Turn on the power If the unit operates when the ON OFF button is pressed if trouble is ...

Page 134: ...NO Is DC280V imposed between the power transistor P and N Is there output at CNG CNH on the printed circuit bord CPU Is the voltage at U V and W of the power transistor Is the diode stack good Is condenser good Is there conducitvity in the inductor The printed circuit board CPU is defective e Replace The printed circuit board POWER is defective e Replace The power transistor is defective e Replace...

Page 135: ...UTION HIGH VOLTAGE ii Outdoor unit inspection points High voltage is produced in the control box Don t touch electrical parts in the control box for 5 minutes after the unit is stopped SSRC63ZE S1 71ZE S1 Power source and serial signal inspection L to N AC220 230 240V 1 to 2 AC220 230 240V 2 to 3 Normal if the voltage oscillates between DC 0 and approx 12V Normal if there is approximately DC 5 V 1...

Page 136: ...e figure on the right can be measured the power transistor and the circuit board for the outdoor unit are normal For about 50 seconds After being switched on there will be a delay of approximately one minute depending on the conditions k How to make sure of remote control Note 1 Check method of remote control a Press the reset switch of the remote control b If all LCD are displayed after one 1 dis...

Page 137: ...om the loosened portion v Open the valve 1 and 3 after discharging air from the charge hose A then the liquid refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cylinder upright to let liquid refrigerant flow into the unit vi When refrigerant has been charged into the system to some extent refrigerant flow becomes stagnant when that happens start the compre...

Page 138: ... 136 MEMO ...

Page 139: ... SRK20HD S1 SRK20HC S2 SRK28HD S1 SRK28HC S2 SRK40HD S1 SRK40HC S2 138 2 2 SRK50HE S1 SRK56HE S1 176 2 3 SRK63HE S1 SRK71HE S1 211 2 WALL MOUNTED TYPE ROOM AIR CONDITIONER Split system air to air heat pump type ...

Page 140: ...n 152 4 Flap control 153 5 Comfortable timer setting 153 6 Outline of heating operation 154 7 Outline of cooling operation 157 8 Outline of dehumidifying operation 158 9 Automatic operation 159 10 Outline of fan operation 159 11 Protective control function 160 2 1 5 APPLICATION DATA 162 1 Selection of location for installation 163 2 Installation of indoor unit 164 3 Installation of outdoor unit 16...

Page 141: ...switch is set on auto it will either automatically decide operation mode such as cooling heating and thermal dry or operate in the operation mode before it has been turned to automatic control c Self diagnosis function We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as follows 2 How to read the model name Example SR K 40 H...

Page 142: ...ation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 core...

Page 143: ...ration control Operation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power sourc...

Page 144: ...bration absorber Cushion rubber for compressor Electric heater Operation control Operation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m ...

Page 145: ...ctric heater Operation control Operation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connect...

Page 146: ...tric heater Operation control Operation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connecta...

Page 147: ... Electric heater Operation control Operation switch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Con...

Page 148: ...F cycle Max 10 times h ON and OFF interval Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Max 10m Outdoor unit is higher Max 10m Outdoor unit is lower Item Models a Indoor unit Models SRK20HD S1 28HD S1 40HD S1 VIEW A 117 5 580 117 5 148 5 216 5 216 5 8 2 44 5 236 1 5 7 450 450 67 5 42 7 47 2 175 44 5 216 5 216 5 148 5 53 5 ...

Page 149: ...uid 4 0 4 0 Flare connecting ø9 52 3 8 Service valve Gas Terminal block Models SRK20HC S2 28HC S2 40HC S2 Unit mm A VIEW A 815 117 5 580 117 5 247 4 5 4 5 4 5 3 5 60 788 60 14 5 60 9 148 5 216 5 216 5 8 2 44 5 236 1 5 7 450 450 67 5 42 7 47 2 175 44 5 216 5 216 5 148 5 53 5 250 Piping for Gas Therminal block Piping hole right left Drain hose 540 ø16 Piping for Liquid 465 1 ø6 35 Piping hole ø65 Pi...

Page 150: ...SRK20HD S1 28HD S1 40HD S1 20HC S2 28HC S2 40HC S2 Outdoor unit Indoor unit Heat exchanger Room temp sensor Heat exchanger Flare connecting Heat exchanger sensor Piping Liquid ø6 35 Check joint 4 way valve Service valve Liquid Flare connecting Discharge temp sensor Cooling cycle Heating cycle Outdoor air temp sensor Heat exchanger sensor Compressor Capillary tube Strainer Accumulator Service valve...

Page 151: ...o with respect to the frosting on the outdoor heat exchanger How to obtain the cooling and heating capacity Example The net cooling capacity of the model SRK40HD S1 with the piping length of 15m indoor wet bulb temperature at 19 0 C and outdoor dry bulb temperature 35 C is Net cooling capacity 3600 0 975 1 0 3510 W SRK40HD S1 Factor by air temperatures 15 ISO T1 Standard Condition Outdoor air W B ...

Page 152: ...WH CC RD RD Y GN G1 D S BR BK CNB CNE CNG Th1 Th2 CNG Th4 Th5 Th6 CNE CNB CNU Display Wireless R Amp 1 2 3 Black Brown Red Light blue White Yellow Green BK BR RD LB WH Y GN Color symbol Meaning of marks Symbol Parts name CF I Capacitor for FM I CM Compressor motor F Fuse FM I Fan motor Indoor FMo Fan motor Outdoor SM Flap motor Symbol Parts name Th 1 Room temp sensor Th 2 Heat exchanger sensor Ind...

Page 153: ...s the room temperature This button changes the present time and TIMER time CANCEL button This button cancels the ON timer and OFF timer RESERVE button This button sets the present time and TIMER time S Indication section OPERATION MODE indicator Indicates selected operation with lamp Heat pump type Auto Cool Heat Dry Cooling only type Auto Cool Fan Dry TEMPERATURE indicator Indicates set temperatu...

Page 154: ...esumes operations at that point after the power has been restored b The following settings will be cancelled i Timer settings ii High power operations Notes 1 The power blackout auto restart function is set at on when the air conditioner is shipped from the factory Consult with your dealer if this function needs to be switched off 2 When power failure ocurrs the timer setting is cancelled Once pow...

Page 155: ...a ture is 4ºC the correction value is found to be 5 min utes from the table shown above so that the starting time of next operation is determined as follows 15 min earlier 5 min 20 min earlier Current operation Correction value start time 5 Comfortable timer setting If the timer is set at ON when the operation select switch is set at the cooling or heating or the cooling or heating in auto mode op...

Page 156: ...ing Indoor fan motor Flaps Display 52C Outdoor fan motor ON ON or OFF Lights up ON OFF ON ON or OFF Lights up ON ON OFF Stop position control Lights up or flashes OFF after stop mode OFF 4 way valve Depending on the stop mode ON Depending on the stop mode When the compressor command is OFF When the compressor command is ON When the compressor goes OFF due to an abnormal stop Functional components ...

Page 157: ...or unit heat exchanger sensor temperature is 5ºC or lower continuously for 3 minutes 4 The difference between the outdoor temperature sensor temperature and the outdoor heat exchange sensor temperature is 4 5ºC 5 The compressor is running Also the number of times the compressor goes OFF is counted and when it reaches 10 or more times if the conditions in 1 2 and 3 above except that the outdoor hea...

Page 158: ...speed 3 OFF Compressor command Indoor unit fan Operating lamp Flashes Outdoor unit fan 4 way valve Defrost start operation Hot keep Defrost operation Operation after defrost is ended Normal heating operation defrost recovery Controlled by the indoor heat exchanger temperature The chart at left is for reference Hot keep control governs operation during heating Hot keep Recovery temperature 9 C OFF ...

Page 159: ... during the HI POWER operation 2 Protective functions will actuate with priority even during the HI POWER operation Indoor fan motor Flaps Display 52C Outdoor fan motor ON ON or OFF Lights up ON OFF ON ON or OFF Lights up ON ON OFF Stop position control Lights up or flashes OFF after stop mode OFF 4 way valve Depending on the stop mode OFF Depending on the stop mode When the compressor command is ...

Page 160: ...emp deg b Start up operation ON OFF OFF 0 3 6 9 12 ON OFF OFF 0 12 Compressor and outdoor fan Set fan speed Indoor fan Start Temperature check Start Temperature check Compressor and outdoor fan Set fan speed Indoor fan Operation block decision C D Block A B Block minutes minutes Speed 1 Speed 1 20 seconds ON OFF OFF 0 4 8 ON OFF OFF 0 8 Compressor and outdoor fan Indoor fan D Block Compressor and ...

Page 161: ...perature can be adjusted within the following range There is the relationship as shown below between the signals of the wireless remote controller and the setting temperature Signals of wireless remote controller Display 6 5 4 3 2 1 0 1 2 3 4 5 6 Setting Cooling 19 20 21 22 23 24 25 26 27 28 29 30 31 temperature Dehumidifying 19 20 21 22 23 24 25 26 27 28 29 30 31 Heating 20 21 22 23 24 25 26 27 2...

Page 162: ...ssor OFF Indoor fan 1st speed Outdoor fan OFF 4 way valve Stop mode iii Reset conditions Indoor heat exchanger temperature Th2 is higher than 8ºC b Indoor fan motor protection When the air conditioner is operating and the indoor fan motor is turned ON if the indoor fan motor has operated at 300 rpm or under for more than 30 seconds the unit enters first in the stop mode and then stops the entire s...

Page 163: ...y for 15 seconds or longer while operation is stopped an error indication is displayed Also if the temperature detected by the indoor heat exchanger sensor is 20ºC or lower continuously for 3 minutes after heating operation has started the indoor unit s fan speed is forcibly raised to speed 5 After this the air conditioner is stopped if the detected temperature remains at 20ºC continuously for 40 ...

Page 164: ... of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel It s improper installation can also r...

Page 165: ...e way piping length R 15 m Outdoor unit is lower 10 m Outdoor unit is higher 10 m r h Left side Right side 5 cm 10 cm 1 5 cm 6 5 cm Air inlet Air inlet Air Outlet 100 100 600 No obstacles Service space for electrical parts Unit mm Notes 1 Blowing out port and suction port on the back side of the unit can be installed at a distance of 10cm from walls In case the barrier is 1 2m or above in height o...

Page 166: ...hole with incline of 5 degree from indoor side to outdoor side Indoor side Outdoor side Cut off the sleeve collar in case of drawing piping out to rear Cut off the sleeve collar that can be seen from beneath the unit Wall thickness 1 5 cm Indoor side Outdoor side Turn to tighten Paste View of sleeve when installed Inclined flange Sealing plate Sleeve Indoor side Outdoor side Look for the inside wa...

Page 167: ...is inserted in sufficiently water leakage could re sult Since this air conditioner has been designed to collect dew drops on the rear surface to the drain pan do not attach the power cord above the gutter Gutter Wall Pipe accommodation section 1 Connect the connection wire securely to the terminal block If the wire is not affixed completely contact will be poor and it is dangerous as the terminal ...

Page 168: ...ould be toppled with strong winds secure the unit firmly with foundation bolts wire etc b Connection of indoor and outdoor connecting wiring i Connect the wiring according to the number of the indoor terminal block Mis wiring may cause the burning damage and make sure to connect correctly Notes 1 To prevent the mis operation by noise when the connecting wire too long for indoor and outdoor Please ...

Page 169: ...fied torquing value Liquid side ø6 35 14 0 18 0N m 1 4 1 8kgf m Gas side ø9 52 34 0 42 0N m 3 4 4 2kgf m ø12 7 49 0 61 0N m 4 9 6 1kgf m Use one more spanner to fix the valve Spanner for fixing the piping Torque wrench Specified torquing value Liquid side ø6 35 14 0 18 0N m 1 4 1 8kgf m Gas side ø9 52 34 0 42 0N m 3 4 4 2kgf m ø12 7 49 0 61 0N m 4 9 6 1kgf m Since the system uses service ports dif...

Page 170: ...e Make sure that drain flows properly f Standard operation data Model SRK20HD S1 SRK28HD S1 SRK40HD S1 Item SRK20HC S2 SRK28HC S2 SRK40HC S2 Cooling Heating 2 55 2 74 26 28 2 55 2 74 26 28 2 55 2 74 26 28 Cooling 0 78 0 98 8 10 0 78 0 98 8 10 0 69 0 88 7 9 Heating Cooling 13 15 13 15 14 16 Heating 15 17 15 17 20 22 Cooling 3 1 3 0 2 9 3 9 3 7 3 5 5 3 5 1 4 9 Running current A Heating 3 0 2 9 2 8 3...

Page 171: ... be more or less depending on the installation 3 The coverage may be less or even nil If the sens ing element is exposed to strong light such as direct sunlight illumination etc or dust is deposited on it or it is used behind a curtain etc or less 5 m o r l e s s Wireless remote controller 5 m or less Remote controller available in this area Receiver or less 6 Precautions for wireless remote contr...

Page 172: ...again Temporarily turn off the power source and turn it on again in about 1 min and turn the unit on again YES No YES YES Does the trouble occur again Disconnect connectors and connect them again Operate the unit again after confirming that the fuse and the varistor equipped on PCB does not burn out Carry out checks according to detailed check process See later page Unit did not cool etc Is the po...

Page 173: ... signal transmission error Compressor faulty Overload operation 51C operation Gas shortage Defective discharge pipe temp sensor Compressor lock Closed service valve Broken signal wire Defective indoor outdoor unit PCB c Inspection procedures corresponding to detail of trouble Sensor error Broken sensor wire connector poor connection Shortcircuit Broken wire Is connector connection good YES YES NO ...

Page 174: ...ce value check replacement of discharge pipe sensor Does trouble persist after charging gas Clogged capillary tube or strainer defective EEV etc Indoor fan motor error Defective fan motor defective PCB YES YES NO NO Is connector connection good Is voltage applied to fan motor Defective fan motor Correct connector connection Defective indoor unit PCB Outdoor unit abnormal Compressor faulty compress...

Page 175: ...ng Release of continuous compressor operation command Heating Continuous compressor operation command is not released Cooling System can be operated normally Heating High pressure control mode ii Outdoor unit Phenomenon Sensor Shortcircuit Broken wire Cooling System can be operated normally Heating Defrosting is not performed Cooling System can be operated normally Heating Defrosting is not operat...

Page 176: ...lock Power supply Between 1 2 AC 220 230 240V Signal Between 2 3 Changing between DC 0 Approx 12V f How to make sure of remote controller 1 Is remote controller normal YES Again pushing operating switch Operating the unit NO Does unit ON OFF button operates Operating the unit NO NO YES YES Remote controller defects Abnormality is not found Replace the display Control problem on indoor unit Is the ...

Page 177: ...m the loosened portion v Open the valve 1 and 3 after discharging air from the charge hose A then the liquid refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cylinder upright to let liquid refrigerant flow into the unit vi When refrigerant has been charged into the system to some extent refrigerant flow becomes stagnant when that happens start the compres...

Page 178: ...6 5 Flap control 186 6 Comfortable timer setting 187 7 Outline of heating operation 187 8 Outline of cooling operation 190 9 Outline of dehumidifying operation 191 10 Outline of automatic operation 192 11 Outline of fan operation 192 12 Protective control function 193 2 2 5 APPLICATION DATA 195 1 Selection of location for installation 196 2 Installation of indoor unit 197 3 Installation of outdoor...

Page 179: ...he remote control switch is set on auto it will either automatically decide operation mode such as cooling heating and thermal dry or operate in the operation mode before it has been turned to automatic control c Self diagnosis function We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as follows 2 How to read the model name...

Page 180: ...e controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare Connection Attached length of piping Liquid line 0 54 m Gas line 0 47 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 m 3 cores with earth Size Core numbe...

Page 181: ...itch Wireless Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connection Attached length of piping Liquid line 0 54 m Gas line 0 47 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 m 3 cores with ea...

Page 182: ...10 times h ON and OFF interval Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Max 15m Outdoor unit is higher Max 15m Outdoor unit is lower Item Models 3 Exterior dimensions a Indoor unit Models All models Unit mm 840 298 A Piping hole right 259 9 44 right 67 left 60 3 60 60 14 5 813 60 3 44 44 60 60 VIEW A 44 5 47 5 220 5 50...

Page 183: ... 4 Piping system Models SRK50HE S1 56HE S1 Outdoor unit Indoor unit Heat exchanger Room temp sensor Heat exchanger Flare connection Heat exchanger sensor Piping Liquid ø6 35 Check joint 4 way valve Service valve Liquid Flare connection Discharge pipe temp sensor Cooling cycle Heating cycle Outdoor air temp sensor Heat exchanger sensor Compressor Capillary tube Strainer Accumulator Service valve Ga...

Page 184: ...rosting on the outdoor heat exchanger How to obtain the cooling and heating capacity Example The net cooling capacity of the model SRK50HE S1 with the piping length of 15m indoor wet bulb temperature at 19 0 C and outdoor dry bulb temperature 35 C is Net cooling capacity 4700 0 975 1 0 4583 W SRK50HE S1 Length 15m Factor by air temperatures 15 ISO T1 Standard Condition Outdoor air W B temperature ...

Page 185: ...M BK BK 51C CNB CNU 20S Th4 Th5 Th6 W V U 5 3 FMo WH BK CFO OR WH EEV RL Black Brown Red Light Blue White Yellow Green BK BR RD LB WH Yellow Y Orange OR Y GN Color symbol Meaning of marks Symbol Parts name CM Compressor motor F Fuse FM I Fan motor Indoor FMo Fan motor Outdoor SM Flap motor RL Inspection lamp Symbol Parts name Th 1 Room temp sensor Th 2 Heat exchanger sensor Indoor unit Th 4 Heat e...

Page 186: ...ets the room temperature This button changes the present time and TIMER time CANCEL button This button cancels the ON timer and OFF timer RESERVE button This button sets the present time and TIMER time S Indication section OPERATION MODE indicator Indicates selected operation with lamp Heat pump type Auto Cool Heat Dry Cooling only type Auto Cool Fan Dry TEMPERATURE indicator Indicates set tempera...

Page 187: ...function that records the operational status of the air conditioner immediately prior to it being switched off by a power cut and then automatically resumes operations at that point after the power has been restored b The following settings will be cancelled i Timer settings ii High power operations Notes 1 The power blackout auto restart function is set at on when the air conditioner is shipped f...

Page 188: ...nds in the horizontal position s During heating t operation Stops for approximately 5 seconds in this position Thick line Rapid movement Thin line Slow movement Horizontal blowing COOL DRY Slant forward blowing HEAT 4 Custom cord switching procedure If two wireless remote controllers are installed in one room in order to prevent wrong operation due to mixed signals please modify the printed circui...

Page 189: ...temperature 7 Outline of heating operation Heat pump type only a Operation of major functional components b Fan speed switching i Auto fan control The indoor fan is automatically controlled in accordance with the difference between the room temperature detected by the room temperature sensor and the thermostat setting as shown below Indoor fan motor Flaps Display 52C Outdoor fan motor ON ON or OFF...

Page 190: ...mperature is 6 0ºC The outdoor temperature 15 C The difference between the outdoor temperature sensor temperature and the outdoor heat exchanger temperature sensor temperature is 5ºC 5 The compressor is running Also the number of times the compressor goes OFF is counted and when it reaches 10 or more times if the conditions in 1 2 and 3 above except that the outdoor heat exchanger temperature sens...

Page 191: ...s at speed 4 OFF Compressor command Indoor unit fan Run light Flashes Outdoor unit fan 4 way valve Defrost start operation Hot keep Defrost operation Operation after defrost is ended Normal heating operation defrost recovery Controlled by the indoor heat exchanger temperature The chart at left is for reference Hot keep control governs operation during heating Hot keep Recovery temperature 15 C OFF...

Page 192: ...ion 2 Protective functions will actuate with priority even during the HIGH POWER operation Indoor fan motor Flaps Display 52C Outdoor fan motor ON ON or OFF Lights up ON OFF ON ON or OFF Lights up ON ON OFF OFF Stop position control Lights up or flashes OFF after stop mode OFF Depending on the stop mode Depending on the stop mode When the compressor command is OFF When the compressor command is ON...

Page 193: ... within 12 minutes from start temperature check is performed by operating indoor fan at speed 1 for 20 seconds before finishing 12 minutes and allowing decision of next operation block c DRY operation After finishing start up operation described in b above thermal dry operation is performed at 8 minutes intervals according to the difference between room temperature and thermostat setting temperatu...

Page 194: ... wireless remote controller and the setting temperature Signals of wireless remote controller Display 6 5 4 3 2 1 0 1 2 3 4 5 6 Setting Cooling 19 20 21 22 23 24 25 26 27 28 29 30 31 temperature Dehumidifying 19 20 21 22 23 24 25 26 27 28 29 30 31 Heating 20 21 22 23 24 25 26 27 28 29 30 31 32 11 Outline of fan operation Cooling only type only a Operation of major functional components b HIGH POWE...

Page 195: ...n operation once this function is not activated until the unit is stopped or the mode is changed The timer light flashes 2 times when 20 minutes have elapsed Outdoor fan 48 58 OFF ON 12 Protective control function a Frost prevention for indoor heat exchanger During cooling or dehumidifying i Operating conditions i Indoor heat exchanger temperature sensor detected with Th2 is lower than 2 5ºC ii 10...

Page 196: ...ile operation is stopped an error indication is displayed Also if the temperature detected by the indoor heat exchanger temperature sensor is 20ºC or lower continuously for 3 minutes after heating operation has started the indoor unit s fan speed is forcibly raised to speed 5 After this the air conditioner is stopped if the detected temperature remains at 20ºC continuously for 40 minutes Run light...

Page 197: ...of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it Improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel It s improper installation can also re...

Page 198: ...ne way piping length R 25 m Outdoor unit is lower 15 m Outdoor unit is higher 15 m r h Left side Right side 5 cm 10 cm 1 5 cm 4 cm Air inlet Air inlet Air Outlet 100 100 600 No obstacles Service space for electrical parts Unit mm Notes 1 Blowing out port and suction port on the back side of the unit can be installed at a distance of 10cm from walls In case the barrier is 1 2m or above in height or...

Page 199: ...eve Sleeve Inclined Sealing plate Note 1 Drill a hole with incline of 5 degree from indoor side to outdoor side Indoor side Outdoor side Cut off the sleeve collar in case of drawing piping out to rear Cut off the sleeve collar that can be seen from beneath the unit Wall thickness 1 5 cm Indoor side Outdoor side Turn to tighten Paste View of sleeve when installed Inclined flange Sealing plate Sleev...

Page 200: ...xample or 245IEC57 H Harmonized cable type 05 300 500 volts R Natural and or synth rubber wire insulation N Polychloroprene rubber conductors insulation R Standed core 4or5 Number of conductors G One conductor of the cable is the earth conductor yellow green 1 5 Section of copper wire mm2 Clamp Lid Terminal block When the hose is extended to left and taken out from the rear center Piping Drain hos...

Page 201: ...ndoor unit How to remove the indoor unit from the installation board 1 Remove the right and left lids 2 At the marked portion of the indoor unit base lower latch pull downward with fingers both right and left hand sides The indoor unit base lower latch can be removed from the installation board Lid left The marked portion of the indoor unit base lower latch Lid right Installation board Installatio...

Page 202: ...lease let the anchorized personal to decide by indoor wiring code whether connect the leakage breaker or not 4 Refrigerant piping a Preparation Keep the openings of the pipes covered with tapes etc to prevent dust sand etc from entering them Indoor unit side Outdoor unit side Remove the flared nuts on both liquid and gas sides Remove the flared nuts on both liquid and gas sides Install the removed...

Page 203: ...ditional refrigerant charge by weight after refrigerant piping completion Additional charge amount per meter 20g m Example How much amount of additional charge for 25m piping 25 15 m 20g m 200g 200g for additional charge d Insulation of connecting portion i Cover the connecting portion of the refrigerant piping with the pipe cover and seal them If neglecting to do so moisture occurs on the piping ...

Page 204: ...6 C WB Low pressure MPa Temp difference between return air and supply air C Running current A ii When manipulating the remote controller mounted on a wall Make sure that it works normally i e transmission reception signal is audible before mounting Notes 1 The remote controller is correctly facing the sensing element of the air conditioner when being manipulated 2 The typical coverage is indicated...

Page 205: ...rant service valve open c Troubleshooting procedure If the air conditioner does not run at all If the air conditioner does not run at all diagnose the trouble using the following troubleshooting procedure If the air conditioner is running but breaks down proceed to troubleshooting step d Important When all the following conditions are met we say that the air conditioner will not run at all 1 The R...

Page 206: ...ustomer complaints Judge the conditions in comparison with the contents of the complaints Confirm the contents of the customer complaint Check the self diagnosis display Eliminate the cause of the trouble and perform an operation check Replace the faulty component then perform an operation check Identify the faulty component by using the check procedure corresponding to the content of the trouble ...

Page 207: ...or on exist during air conditioner operation an indoor unit fan motor speed of 300 rpm or lower is measured for 30 seconds or longer The air conditioner stops When the value of the discharge pipe sensor exceeds the set value The air conditioner stops Defective fan motor poor connector connection Gas shortage defective discharge pipe sensor closed service valve Indoor fan motor error Over heat of c...

Page 208: ...nted circuit board normal Normal NO YES YES Correct connector connection Is DC fan motor resistance value good Replace indoor PCB Replace indoor fan motor Notes 1 See pages 208 209 for the DC fan motor and indoor unit circuit board check procedure 2 After making sure the DC fan motor and indoor unit circuit board are normal connect the connectors and confirm that the fan motor is turning If power ...

Page 209: ...smission Wiring error including power cable defective indoor outdoor unit PCB Does error persist after power reset Are the lines connecting the indoor and outdoor units connected normally Is DC 0 Approx 12V detected between 2 3 terminals on indoor unit terminal block YES YES NO NO YES NO Trouble by transient cause not unit trouble Correct improper wire connection on indoor outdoor unit Defective i...

Page 210: ...efrigerant amount normal Is heat exchanger sensor volume for inside unit good Is connector for compressor connection good Does trouble persist after charging gas Clogged capillary tube or strainer defective EEV etc Replace capacitor for compressor Correct connection Check if there are any places where gas is leaking YES YES NO NO NO NO NO NO YES YES YES YES h Checking the indoor electrical equipme...

Page 211: ... board output check a Turn off the power b Remove the front panel then disconnect the fan motor lead wire connector c Turn on the power If the unit operates when the ON OFF button is pressed if trouble is detected after the voltages in the following figure are output for approximately 30 seconds it means that the circuit board is normal and the fan motor is broken down If the voltages in the follo...

Page 212: ...om the loosened portion v Open the valve 1 and 3 after discharging air from the charge hose A then the liquid refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cylinder upright to let liquid refrigerant flow into the unit vi When refrigerant has been charged into the system to some extent refrigerant flow becomes stagnant when that happens start the compre...

Page 213: ...operation 228 10 Outline of dehumidifying operation 229 11 Outline of automatic operation 230 12 Outline of fan operation Cooling only type only 231 13 Regulation of outdoor air flow 231 14 Stop mode 232 15 External control remote display control of input signal 233 16 Operation permission prohibition control 234 17 Protective control function 234 2 3 5 APPLICATION DATA 237 1 Selection of location...

Page 214: ...n and continues to operate at the same position from the next time b Automatic operation When the remote control switch is set on auto it will either automatically decide operation mode such as cooling heating and thermal dry or operate in the operation mode before it has been turned to automatic control c Self diagnosis function We are constantly trying to do better service to our customers by in...

Page 215: ...computer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 70m Gas line 0 63m Insulation Necessary Both sides Drain hose Connectable Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth...

Page 216: ...erature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ15 88 5 8 Connecting method Flare connecting Attached length of piping Liquid line 0 70m Gas line 0 63m Insulation Necessary Both sides Drain hose Connectable Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4...

Page 217: ...Max 15m Frequency of ON OFF cycle Max 10 times h ON and OFF interval Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Item Models a Indoor unit Models SRK63HE S1 71HE S1 VIEW A A 17 3 60 150 4 43 5 55 64 48 9 Piping hole right left 3 248 55 4 19 51 2 55 Terminal block 1090 Unit mm 318 77 44 5 7 7 299 106 8 5 301 8 25 50 Instal...

Page 218: ...s ø12 7 1 2 Ground terminal 124 34 6 20 2 0 42 7 100 3 15 640 14 b Outdoor unit Model SRC63HE S1 Model SRC71HE S1 Unit mm Terminal block Service valve Gas Flare fitting ø15 88 5 8 Service valve Liquid Flare fitting ø6 35 1 4 25 1 165 5 3 0 3 0 48 5 103 3 750 24 1 Drain holes 2 ø15 25 8 29 8 87 9 880 150 580 150 61 532 223 60 15 340 61 47 5 19 380 19 418 Unit mm ...

Page 219: ... uffler M Capillary tube Strainer accumulator Accumulator Sub Service valve Gas Electronic expansion valve Outdoor unit Indoor unit Heat exchanger Room temp sensor Humidity sensor Heat exchanger Flare connecting Heat exchanger sensor Piping Liquid ø6 35 Piping Gas ø15 88 Check joint 4 way valve Service valve Liquid Flare connecting Discharge pipe temp sensor Cooling cycle Heating cycle Outdoor air...

Page 220: ...ct to the frosting on the outdoor heat exchanger How to obtain the cooling and heating capacity Example The net cooling capacity of the model SRK63HE S1 with the piping length of 15m indoor wet bulb temperature at 19 0 C and outdoor dry bulb temperature 35 C is Net cooling capacity 6300 0 975 1 0 6143W SRK63HE S1 Factor by air temperatures 15 ISO T1 Standard Condition Outdoor air W B temperature C...

Page 221: ...ication DC12 ON indication for CM DC12 Check indication DC12 Distant operation Heat exch sensor Outdoor unit Outdoor air temp sensor Discharge pipe temp sensor Varistor 4 way valve coil Electronic expansion valve Diode stack Auxiliary relay Capacitor for CM Th 4 Th 5 Th 6 ZNR 20S EEV DS 52 X1 4 CC CF O TB 51C XR1 XR2 XR3 XR4 XR5 Parts name BL OR Y G Black Blue Orange Yellow Green WH White RD Red G...

Page 222: ...M DC12 Check indication DC12 Distant operation Heat exch sensor Outdoor unit Outdoor air temp sensor Discharge pipe temp sensor Varistor 4 way valve coil Electronic expansion valve Diode stack Auxiliary relay Capacitor for CM Th 4 Th 5 Th 6 ZNR 20S EEV DS 52 X1 5 CC CF O TB XR1 XR2 XR3 XR4 XR5 Parts name BL OR Y G Black Blue Orange Yellow Green WH White RD Red GR Green Y Yellow Parts name Parts na...

Page 223: ... button selects ON TIMER operation TEMPERATURE button This button sets the room temperature This button changes the present time and TIMER time OFF TIMER button This button selects OFF TIMER operation RESET switch Switch for resetting microcomputer OPERATION MODE indicator Indicates selected operation with lamp Heat pump type HE Auto Cool Heat Dry Cooling only type CE Auto Cool Fan Dry TEMPERATURE...

Page 224: ...de operation settings RESET switch Press this switch while making settings to go back to the previous operation This switch is also used to reset the FILTER CLEANING message display Press this switch after cleaning the air filter Central control display Displayed when the air conditioning system is controlled by the option controller Timer operation display Displays the settings related to timer o...

Page 225: ...ration mode setting Fan speed Flap Timer switch Cooling About 24ºC Thermal dry About 24ºC Auto Auto Continuous Heating About 26ºC 3 Power blackout auto restart function a Power blackout auto restart function is a function that records the operational status of the air conditioner immediately prior to it being switched off by a power cut and then automatically resumes operations at that point after...

Page 226: ...r moves in left and right directions continuously c When not operating The flap returns to the position of air flow directly below when operation has stopped d Multi directional Air Flow up down air scroll and left right air scroll Activating both up down air swing and left right air swing at the same time results in a multi directional air flow Up down air scroll Stops at this position for 5 seco...

Page 227: ...e operation select switch is set at the dehumidifying as well as the dehumidifying in the auto mode However the operation of item 1 above is performed during the dehumidifying in the auto mode 3 During the comfortable timer operation both the run light and timer light illuminate and the timer light goes off after expiration of the timer ON setting time Corrects the starting time of next operation ...

Page 228: ...Fan speed switching i Auto fan control The indoor fan is automatically controlled in accordance with the difference between the room temperature detected by the room temperature sensor and the thermostat setting as shown below Indoor fan motor Flap and louver Display Outdoor fan motor ON ON or OFF Lights up OFF ON ON or OFF Lights up ON ON OFF Stop position control Lights up or flashes When the co...

Page 229: ...erence between the outdoor temperature sensor temperature and the outdoor heat exchanger temperature sensor temperature is 11ºC 15ºC Note 1 Values in are for type 71 ii End conditions when either of the following conditions is satisfied 1 Outdoor heat exchanger temperature sensor 15ºC or higher 2 Defrosting operation has continued for 10 minutes iii Operation of functinal components during defrost...

Page 230: ...ostat setting point Speed 8 1 2 3 4 h Forced defrost i Forced defrost operation can be performed only once time within 20 second after the power source is turned on in accor dance with the following operation 1 Remote control operation ii If remote control operation is performed for 1 minute after 3 minute timer operation the operation is canceled if one of the following conditions is satisfied 1 ...

Page 231: ...r 20 seconds before finishing 12 minutes and allowing decision of next operation block c Thermostat operation The compressor and outdoor fan and turned on and off as shown below according to the temperature setting d HIGH POWER operation HI POWER button on the remote control ON The following operation is performed for 15 minutes without relation to the set temperature or fan speed setting e ECONOM...

Page 232: ... 4 8 0 minutes A Block Compressor and outdoor fan ON OFF OFF Indoor fan Start Temperature check 4 8 0 Speed 1 20 seconds minutes 20 seconds D Block Compressor and outdoor fan ON OFF OFF Indoor fan Start Temperature check Speed 4 Speed 1 8 3 0 minutes C Block Operation block decision Operation block decision c DRY operation After finishing start up operation described in b previous page thermal dry...

Page 233: ...ly a Operation of major functional components b HIGH POWER operation HI POWER button on the remote control ON The following operation is performed for 15 minutes without relation to the set temperature or fan speed setting 52C Indoor fan motor Outdoor fan motor Flap and louver Speed 9 Speed 8 Speed 8 OFF OFF Depend on the flap and louver control Speed 6 Speed 4 Speed 2 High power AUTO HIGH MED LOW...

Page 234: ...d dehumidifying Operation Stop instructions All stop Stop instructions All stop Stop instructions Restart Stop instructions Restart 1st speed Hot keep When the complete stop command given when there is and abnormal stoppage command When stoppage occurs due to thermostat operation switching operations and protective function operations 470 pulse 150 pulse 1 min 1 min 1 min 1 min 3 min 3 min 2 min 5...

Page 235: ... of input signal Control of input signal switch input timer input connectors CNT are provided on the control circuit board of the indoor unit However when the operation of air conditioner is under the Center Mode the remote control by CnT is invalid i If the factory settings Jumper wire J1 EXTERNAL INPUT on the PCB are set or LEVEL INPUT is selected in the wired remote control s indoor unit settin...

Page 236: ...s on a above When the jumper wire J3 is short circuited Normal operation is enable when shipping When CnT input is set to ON the operation starts and if the input is set to OFF the operation stops For the CnT and remote control inputs the input which is activated later has priority and can start and stop the operation When the jumper wire J3 is released Permission Prohibition mode When Cnt input i...

Page 237: ...oor heat exchanger temperature sensor detection temperature controls the compressor iii Reset condition When the following condition is satisfied The humidity sensor value is less than 63 UP DOWN air scroll Flap swing UP DOWN air scroll Executes the command to the left Situations besides the ones described above Controls the level of the UP DOWN flap LEFT RIGHT air scroll Louver swing LEFT RIGHT a...

Page 238: ...ation is displayed Also if the temperature detected by the indoor heat exchanger temperature sensor is 20ºC or lower continuously for 3 minutes after heating operation has started the indoor unit s fan speed is forcibly raised to speed 5 After this the air conditioner is stopped if the detected temperature remains at 20ºC continuously for 40 minutes Run light 1 time flash Timer light ON iii Outdoo...

Page 239: ...of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it Improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel It s improper installation can also re...

Page 240: ...ise will cause no trouble A place where there is possibility of flammable gas leakage A place exposed to strong wind vi Do not install the unit near the seaside or where there is possibility of chlorine gas generation Model All models Item One way piping length R 25 m Outdoor unit is lower 15 m Outdoor unit is higher 15 m Left side Right side 5 cm 10 cm 1 5 cm 6 5 cm Air inlet Air inlet Air Outlet...

Page 241: ...gth Adjust so that board will be level by turning the board with the standard hole as the center Standard hole iii Install the sleeve Inserting sleeve Sleeve Inclined Sealing plate Note 1 Drill a hole with incline of 5 degree from indoor side to outdoor side Indoor side Outdoor side Cut off the sleeve collar in case of drawing piping out to rear Cut off the sleeve collar that can be seen from bene...

Page 242: ...les H05RNR4G1 5 Example H Harmonized cable type 05 300 500 volts R Natural and or synth rubber wire insulation N Polychloroprene rubber conductors insulation R Standed core 4 Number of conductors G One conductor of the cable is the earth conductor yellow green 1 5 Section of copper wire mm2 Wiring Clamp Lid Terminal block When the hose is extended to left and taken out from the rear center Piping ...

Page 243: ...n it is exposed indoor Drain hose iii Fixing of indoor unit How to remove the indoor unit from the installation board 1 Push up at the marked portion of the indoor unit base lower latch and slightly pull it toward you both right and left hand sides The indoor unit base lower latch can be removed from the installation board 2 Push up the indoor unit upward So the indoor unit will be removed from th...

Page 244: ... flared nuts on both liquid and gas sides Remove the flared nuts on both liquid and gas sides Install the removed flared nuts to the pipes to be connected then flare the pipes Dimension A Liquid side φ6 35 9 1 mm Gas side φ12 7 16 6 mm φ15 88 19 7 mm Press Remove Remove Do not turn b Connection of refrigerant piping Indoor unit side Connect firmly gas and liquid side pipings by Torque wrench Outdo...

Page 245: ...rant charge by weight after refrigerant piping completion Additional charge amount per meter 25g m 71 type 20g m 63 type Example 71 type How much amount of additional charge for 25m piping 25 15 m 25g m 250g 250g for additional charge d Insulation of connecting portion i Cover the connecting portion of the refrigerant piping with the pipe cover and seal them If neglecting to do so moisture occurs ...

Page 246: ...rectly facing the sensing element of the air conditioner when being manipulated 2 The typical coverage is indicated in the left illustration It may be more or less depending on the installation 3 The coverage may be less or even nil If the sens ing element is exposed to strong light such as direct sunlight illumination etc or dust is deposited on it or it is used behind a curtain etc or less 5 m o...

Page 247: ...x Remove the screw the latch and the band Cut the jumper printed WIRED REMOCON attached on the board It is impossible to control by the wireless remote control after cutting the jumper Install the upper box v Connect the wire Connect the wired remote control and super link wire Please refer to the installation manual of at tachment in wired remote control for details Each wire can be connected the...

Page 248: ...e Replace the top casing as before f Use a cord clamp to attach the remote con trol cord to the wall g Set the functions according to the types of in door unit See Section Function Setting Thin walled part Upper Lower Lower case Upper Lower Lower case Upper Lower Board Wiring X Y Z Red White Black Upper case Remote control cord Electrical box Not included Upper Lower Cable outlet Lower case Upper ...

Page 249: ...8 09 10 Function number A Default setting Hi CEILING SET FILTER SIGN SET POSITION EXTERNAL INPUT SET ROOM TEMP OFFSET FAN CONTROL FREEZE PREVENT TEMP FREEZE PREVENT CONTROL Heating room temperature offset Heating fan control Louver control setting STANDARD Mild mode Hi CEILING 1 Powerful mode NO DISPLAY AFTER 180H AFTER 600H AFTER 1000H 1000H STOP FIX 1 OF 4 4 positiion stop IN MOTION Free stop LE...

Page 250: ... 2 Press either or button Function number A Function description B from the list of remote control unit functions will be displayed one by one Select a desired function 3 Press the SET button The screen display will be switched as follows SETTING Setting C ex AUTO RUN ON 4 Press either or button A list of Settings C will be displayed one by one Select your desired setting 5 Press the SET button Th...

Page 251: ...en followed by SET COMPLETE and the function setting process is completed Then the screen display will be switched to Function number A Function description B so if you want to continue to set another function repeat the stepa as explained above To finish the function setting process please proceed to Step 8 8 Press AIR CON No button The screen display will go back to the indoor unit selection scr...

Page 252: ...ET b Press the button once The display will change to TEMP RANGE c Press the SET button to enter the temperature range setting mode d Using the or button select Hi LIMIT SET or Lo LIMIT SET the press the SET button e If Hi LIMIT SET is selected 1 The display changes from SET UP Hi LIMIT 22ºC flashing 2 Using the button select the upper limit value Display example Hi LIMIT 22ºC flashing 3 Press the...

Page 253: ...nection to the terminal block for remote control polar total length of wires 600 m maximum No Name ot the recommended signal wire 1 Shielding wire 2 Vinylcabtire round cord 3 Vinyl cabtire round cable 4 Control vinyl insulated vinyl sheath cable Master Slave Address SW 3 1 ON Master OFF Slave Shielding wires 100 200 m 0 5 mm2 3 core wires 300 m 0 75 mm2 3 core wires 400 m 1 25 mm2 3 core wires 600...

Page 254: ...igerant service valve open c Troubleshooting procedure If the air conditioner does not run at all If the air conditioner does not run at all diagnose the trouble using the following troubleshooting procedure If the air conditioner is running but breaks down proceed to troubleshooting step d Important When all the following conditions are met we say that the air conditioner will not run at all 1 Th...

Page 255: ...ustomer complaints Judge the conditions in comparison with the contents of the complaints Confirm the contents of the customer complaint Check the self diagnosis display Eliminate the cause of the trouble and perform an operation check Replace the faulty component then perform an operation check Identify the faulty component by using the check procedure corresponding to the content of the trouble ...

Page 256: ...fective fan motor poor connector connection Gas shortage defective discharge pipe sensor closed service valve Indoor fan motor error Over heat of compressor When a sensor wire disconnection is detected while operation is stopped If a temperature of 64ºC or lower is detected for 15 seconds it is judged that the wire is disconnected Not displayed during operation Broken heat exchanger sensor wire po...

Page 257: ...120 1 9 55 14 125 1 6 60 12 130 1 4 65 10 135 1 3 Discharge pipe sensor temperature characteristics Indoor fan motor error Defective fan motor connector poor connection defective PCB Is connector connection good YES NO NO Is the output of the indoor unit s printed circuit board normal Normal NO YES YES Correct connector connection Is DC fan motor resistance value good Replace indoor PCB Replace in...

Page 258: ...smission Wiring error including power cable defective indoor outdoor unit PCB Does error persist after power reset Are the lines connecting the indoor and outdoor units connected normally Is DC 0 Approx 12V detected between 2 3 terminals on indoor unit terminal block YES YES NO NO YES NO Trouble by transient cause not unit trouble Correct improper wire connection on indoor outdoor unit Defective i...

Page 259: ...Abnormality of outdoor unit Compressor malfunction of insufficient gas refrigerant Does compressor operation Is capacitor for compressor normal Replace compressor Replace heat exchanger sensor Insufficient gas Is refrigerant amount normal Is heat exchanger sensor resistance value good Is connector for compressor connection good Does trouble persist after charging gas Clogged capillary tube or stra...

Page 260: ...e power b Remove the front panel then disconnect the fan motor lead wire connector c Turn on the power If the unit operates when the ON OFF button is pressed if trouble is detected after the voltages in the following figure are output for approximately 30 seconds it means that the circuit board is normal and the fan motor is broken down If the voltages in the following figure are not output at con...

Page 261: ...om the loosened portion v Open the valve 1 and 3 after discharging air from the charge hose A then the liquid refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cylinder upright to let liquid refrigerant flow into the unit vi When refrigerant has been charged into the system to some extent refrigerant flow becomes stagnant when that happens start the compre...

Page 262: ... 260 MEMO ...

Page 263: ...RK20CD S1 SRK20CC S1 SRK28CD S1 SRK28CC S1 SRK40CD S1 SRK40CC S1 262 3 2 SRK50CE S1 SRK56CE S1 276 3 3 SRK63CE S1 SRK71CE S1 285 3 WALL MOUNTED TYPE ROOM AIR CONDITIONER Split system air cooled cooling only type ...

Page 264: ...Range of usage limitations 270 3 Exterior dimensions 270 4 Piping system 272 5 Selection chart 273 3 1 3 ELECTRICAL DATA 274 1 Electrical wiring 274 3 1 4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 275 3 1 5 APPLICATION DATA 275 3 1 6 MAINTENANCE DATA 275 3 1 7 REFRIGERANT PIPING INSTALLATION SERVICING MANUAL FOR AIR CONDITIONERS USING R410A 275 ...

Page 265: ...switch is set on auto it will either automatically decide operation mode such as cooling and thermal dry or operate in the operation mode before it has been turned to automatic control c Self diagnosis function We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as follows 2 How to read the model name Example SR K 40 C D S1 Ro...

Page 266: ...crocomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size Core number 1 5 mm2 4 cores Including earth cable...

Page 267: ...erature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size Core number 1 5 mm2 4 cores Inc...

Page 268: ...perature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size Core number 1 5 mm2 4 cores In...

Page 269: ...ote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size Core nu...

Page 270: ...te controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size Core num...

Page 271: ... Remote controller Room temperature control Microcomputer thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 4 m Gas line 0 33 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 5 m 3 cores with Earth Size Cor...

Page 272: ...Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Max 10m Outdoor unit is higher Max 10m Outdoor unit is lower Item Models a Indoor unit Models SRK20CD S1 28CD S1 40CD S1 VIEW A 117 5 580 117 5 148 5 216 5 216 5 8 2 44 5 236 1 5 7 450 450 67 5 42 7 47 2 175 44 5 216 5 216 5 148 5 53 5 Piping for Gas Drain hose 540 ø16 Piping fo...

Page 273: ... 5 216 5 216 5 148 5 53 5 250 Piping for Gas Therminal block Piping hole right left Drain hose 540 ø16 Piping for Liquid 465 1 ø6 35 Piping hole ø65 Piping hole ø65 20 28 ø9 52 40 ø12 7 397 1 Unit mm 290 540 14 4 47 4 42 6 264 5 71 404 5 510 720 17 8 Drain holes 50 12 39 7 99 9 340 312 5 13 5 14 139 2 16x12 61 9 139 3 33 3 Flare connecting ø6 35 1 4 Service valve Liquid 4 0 4 0 Flare connecting ø9...

Page 274: ...ø12 7 1 2 Ground terminal 124 34 6 20 2 0 42 7 100 3 15 640 14 Outdoor unit Indoor unit Room temp sensor Heat exchanger Flare connecting Heat exchanger sensor Piping Liquid ø6 35 Check joint Service valve Liquid Flare connecting Discharge temp sensor Cooling cycle Outdoor air temp sensor Heat exchanger Heat exchanger sensor Compressor Capillary tube Strainer Accumulator Service valve Gas Capillary...

Page 275: ...pacity can be obtained in the following way Net capacity Capacity shown on specification Correction factors as follows a Coefficient of cooling capacity in relation to temperatures b Correction of cooling capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling capacity in relation to the one way piping length between the indoor and outdoor units 16 18 20...

Page 276: ...1 2 3 Black Brown Red Light blue White Yellow Green BK BR RD LB WH Y GN Color symbol Meaning of marks Symbol Parts name CF I Capacitor for FM I CM Compressor motor F Fuse FM I Fan motor Indoor FMo Fan motor Outdoor SM Flap motor Symbol Parts name Th 1 Room temp sensor Th 2 Heat exchanger sensor Indoor unit Th 4 Heat exchanger sensor Outdoor unit Th 5 Outdoor air temp sensor Th 6 Discharge temp sen...

Page 277: ...LICATION DATA The application data for the cooling only models are similar to those for the heat pump models Refer to Page 162 3 1 6 MAINTENANCE DATA Same at the cooling heating equipment SRK heat pump models Refer to Page 170 3 1 7 REFRIGERANT PIPING INSTALLATION SERVICING MANUAL FOR AIR CONDITIONERS USING R410A This is same as chapter 1 1 7 Refer to Page 55 ...

Page 278: ...Range of usage limitations 280 3 Exterior dimensions 280 4 Piping system 281 5 Selection chart 282 3 2 3 ELECTRICAL DATA 283 1 Electrical wiring 283 3 2 4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 284 3 2 5 APPLICATION DATA 284 3 2 6 MAINTENANCE DATA 284 3 2 7 REFRIGERANT PIPING INSTALLATION SERVICING MANUAL FOR AIR CONDITIONERS USING R410A 284 ...

Page 279: ...remote control switch is set on auto it will either automatically decide operation mode such as cooling and thermal dry or operate in the operation mode before it has been turned to automatic control c Self diagnosis function We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as follows 2 How to read the model name Example SR...

Page 280: ...lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connection Attached length of piping Liquid line 0 54 m Gas line 0 47 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 m 3 cores with earth Size Core number 1 5 mm2 4 cores Including earth cable Connection wiring Connecting ...

Page 281: ...r thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connection Attached length of piping Liquid line 0 54 m Gas line 0 47 m Insulation Necessary Both sides Drain hose Connectable Power source cord 2 m 3 cores with earth Size Core number 1 5 mm2 4 cores Including earth cable Connection...

Page 282: ...es Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Max 15m Outdoor unit is higher Max 15m Outdoor unit is lower Item Models 3 Exterior dimensions a Indoor unit Models All models Unit mm 840 298 A Piping hole right 259 9 44 right 67 left 60 3 60 60 14 5 813 60 3 44 44 60 60 VIEW A 44 5 47 5 220 5 50 207 5 73 5 53 5 Piping hole ø65 Piping ho...

Page 283: ...15 640 14 4 Piping system Models SRK50CE S1 56CE S1 Outdoor unit Indoor unit Room temp sensor Heat exchanger Flare connection Heat exchanger sensor Piping Liquid ø6 35 Check joint Service valve Liquid Flare connection Discharge pipe temp sensor Cooling cycle Outdoor air temp sensor Heat exchanger Heat exchanger sensor Compressor Capillary tube Accumulator Service valve Gas Electronic expansion val...

Page 284: ...g capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling capacity in relation to the one way piping length between the indoor and outdoor units 16 18 20 22 24 ISO T1 Standard Condition Indoor air W B temperature C W B Applicable range 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 Cooling Coefficient of cooling Heating capacity in relation to temperature Cooling opera...

Page 285: ...stack 52X 1 2 Auxiliary relay EEV Electronic expansion valve 51C Motor Protector for CM TB Terminal block Power source 1 Phase 220 240V 50Hz Outdoor unit Indoor unit HEAT EXCHANGER Printed circuit board Printed circuit board BR LB Y GN BK WH RD RD 1 3 4 5 6 CNU BK WH Y BL TB TB F 250V 3 15A N ZNR CNM CNE CNG 52C3 52C 52C4 J G Th1 Th2 52C 1 3 FM I SM Display Wireless R Amp Black Brown Red Light Blu...

Page 286: ...PLICATION DATA The application data for the cooling only models are similar to those for the heat pump models Refer to Page 195 3 2 6 MAINTENANCE DATA Same at the cooling heating equipment SRK heat pump models Refer to Page 203 3 2 7 REFRIGERANT PIPING INSTALLATION SERVICING MANUAL FOR AIR CONDITIONERS USING R410A This is same as chapter 1 1 7 Refer to Page 55 ...

Page 287: ...Range of usage limitations 289 3 Exterior dimensions 289 4 Piping system 291 5 Selection chart 291 3 3 3 ELECTRICAL DATA 292 1 Electrical wiring 292 3 3 4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 294 3 3 5 APPLICATION DATA 294 3 3 6 MAINTENANCE DATA 294 3 3 7 REFRIGERANT PIPING INSTALLATION SERVICING MANUAL FOR AIR CONDITIONERS USING R410A 294 ...

Page 288: ...and continues to operate at the same position from the next time b Automatic operation When the remote control switch is set on auto it will either automatically decide operation mode such as cooling and thermal dry or operate in the operation mode before it has been turned to automatic control c Self diagnosis function We are constantly trying to do better service to our customers by installing s...

Page 289: ...IMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 70m Gas line 0 63m Insulation Necessary Both sides Drain hose Connectable Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth cable Connection wiring Connecting method...

Page 290: ... Pilot lamp RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety equipment O D mm in Liquid line φ6 35 1 4 Gas line φ15 88 5 8 Connecting method Flare connecting Attached length of piping Liquid line 0 70m Gas line 0 63m Insulation Necessary Both sides Drain hose Connectable Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth cable Connection ...

Page 291: ...imes h ON and OFF interval Max 3 minutes Outdoor air temperature Upper lower limits Vertical height difference between outdoor unit and indoor unit Item Models a Indoor unit Models SRK63CE S1 71CE S1 VIEW A A 17 3 60 150 4 43 5 55 64 48 9 Piping hole right left 3 248 55 4 19 51 2 55 Terminal block 1090 Unit mm 318 77 44 5 7 7 299 106 8 5 301 8 25 50 Installation board 450 50 25 Piping for Gas 63 ø...

Page 292: ...s ø12 7 1 2 Ground terminal 124 34 6 20 2 0 42 7 100 3 15 640 14 b Outdoor unit Model SRC63CE S1 Model SRC71CE S1 Unit mm Terminal block Service valve Gas Flare fitting ø15 88 5 8 Service valve Liquid Flare fitting ø6 35 1 4 25 1 165 5 3 0 3 0 48 5 103 3 750 24 1 Drain holes 2 ø15 25 8 29 8 87 9 880 150 580 150 61 532 223 60 15 340 61 47 5 19 380 19 418 Unit mm ...

Page 293: ...the conditions as follows The net cooling capacity can be obtained in the following way Net capacity Capacity shown on specification Correction factors as follows a Coefficient of cooling capacity in relation to temperatures 2 Correction of cooling capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling capacity in relation to the one way piping length b...

Page 294: ... CM DC12 Check indication DC12 Distant operation Heat exch sensor Outdoor unit Outdoor air temp sensor Discharge pipe temp sensor Varistor Electronic expansion valve Diode stack Auxiliary relay Capacitor for CM Capacitor for FM O Th 4 Th 5 Th 6 ZNR EEV DS 52 X1 4 CC CF O TB 51C XR1 XR2 XR3 XR4 XR5 Parts name BL OR Y G Black Blue Orange Yellow Green WH White RD Red GR Green Y Yellow Parts name Part...

Page 295: ...on DC12 ON indication for CM DC12 Check indication DC12 Distant operation Humidity sensor Heat exch sensor Outdoor unit Outdoor air temp sensor Discharge pipe temp sensor Varistor Electronic expansion valve Diode stack Auxiliary relay Th 3 Th 4 Th 5 Th 6 ZNR EEV DS 52 X1 5 CC CF O TB XR1 XR2 XR3 XR4 XR5 Parts name BL OR Y G Black Blue Orange Yellow Green WH White RD Red GR Green Y Yellow Parts nam...

Page 296: ...PLICATION DATA The application data for the cooling only models are similar to those for the heat pump models Refer to Page 237 3 3 6 MAINTENANCE DATA Some at the cooling heating equipment SRK heat pump models Refer to Page 252 3 3 7 REFRIGERANT PIPING INSTALLATION SERVICING MANUAL FOR AIR CONDITIONERS USING R410A This is same as chapter 1 1 7 Refer to Page 55 ...

Page 297: ... 2 INVERTER WALL MOUNTED TYPE ROOM AIR CONDITIONER Air Conditioning Refrigeration Systems Headquarters 16 5 2 chome Kounan Minato ku Tokyo 108 8215 Japan Fax 03 6716 5926 ...

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