Daikin K-Series, Service Manual

Page 1: ...horised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion Read the User s Manual carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer di...

Page 2: ...able of Contents Inverter Pair Floor Standing Type K Series zHeat Pump Indoor Unit FVXG25K2V1B FVXG35K2V1B FVXG50K2V1B Outdoor Unit RXG25K2V1B RXG35K2V1B RXG50K2V1B SiBE061121 book Page i Friday April 22 2011 4 12 PM ...

Page 3: ... 7 Automatic Operation 22 1 8 Thermostat Control 23 1 9 NIGHT SET Mode 24 1 10 ECONO Operation 25 1 11 Inverter POWERFUL Operation 26 1 12 Other Functions 27 2 Function of Thermistor 29 3 Control Specification 30 3 1 Mode Hierarchy 30 3 2 Frequency Control 31 3 3 Controls at Mode Changing Start up 33 3 4 Discharge Pipe Temperature Control 35 3 5 Input Current Control 36 3 6 Freeze up Protection Co...

Page 4: ... Protection Control 82 4 6 Thermistor or Related Abnormality Indoor Unit 84 4 7 Signal Transmission Error between Indoor Unit and Outdoor Unit 85 4 8 Unspecified Voltage between Indoor Unit and Outdoor Unit 86 4 9 Outdoor Unit PCB Abnormality 87 4 10 OL Activation Compressor Overload 89 4 11 Compressor Lock 90 4 12 DC Fan Lock 91 4 13 Input Overcurrent Detection 92 4 14 Four Way Valve Abnormality ...

Page 5: ...12 Main Circuit Short Check 127 5 13 Capacitor Voltage Check 128 5 14 Power Module Check 128 Part 8 Trial Operation and Field Settings 129 1 Pump Down Operation 130 2 Forced Cooling Operation 131 3 Trial Operation 133 4 Field Settings 134 4 1 When 2 Units are Installed in 1 Room 134 4 2 Standby Electricity Saving 135 4 3 Jumper and Switch Settings 135 5 Application of Silicon Grease to a Power Tra...

Page 6: ...ug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shock If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas is discharged during the repair work do not touch the discharge...

Page 7: ...n the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and cause injury Be sure to conduct repair work with ap...

Page 8: ... wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire Placing heavy items on the ...

Page 9: ...ng it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If the combustible gas leaks and remains around the unit it may cause a fire Ch...

Page 10: ...nd seal on the installation frame properly If the packing and seal are not installed properly water may enter the room and wet the furniture and floor For unitary type only Caution Icon Type of Information Description Note Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution Caution A caution is used when there is...

Page 11: ...SiBE061121 List of Functions 1 Part 1 List of Functions 1 Functions 2 SiBE061121 book Page 1 Friday April 22 2011 4 12 PM ...

Page 12: ...rflow Self Diagnosis Digital LED Display z z Comfort Control Auto Fan Speed z z Wiring Error Check Function Indoor Unit Quiet Operation z z Anti Corrosion Treatment of Outdoor Heat Exchanger z z NIGHT QUIET Mode Automatic OUTDOOR UNIT QUIET Operation Manual z z Flexibility Multi Split Split Type Compatible Indoor Unit z z INTELLIGENT EYE Operation H P C O Compatible Indoor Unit Quick Warming Funct...

Page 13: ...SiBE061121 Specifications 3 Part 2 Specifications 1 Specifications 4 SiBE061121 book Page 3 Friday April 22 2011 4 12 PM ...

Page 14: ...of Removable Washable Mildew Proof Running Current Rated A 0 10 0 09 0 09 0 11 0 11 0 10 0 11 0 10 0 10 0 12 0 12 0 11 Power Consumption Rated W 19 19 19 22 22 22 21 21 21 24 24 24 Power Factor 86 4 91 8 88 0 90 9 87 0 91 7 86 8 91 3 87 5 90 9 87 0 90 9 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 600 950 215 600 950 215 Packaged Dimensions H W D mm 761 1 030...

Page 15: ...able Washable Mildew Proof Running Current A 0 17 0 16 0 15 0 18 0 17 0 17 Power Consumption W 32 32 32 35 35 35 Power Factor 85 6 87 0 88 9 88 4 89 5 85 8 Temperature Control Microcomputer Control Dimensions H W D mm 600 950 215 Packaged Dimensions H W D mm 761 1 030 314 Weight kg 22 Gross Weight kg 28 Operation Sound H M L SL dB A 44 40 36 32 46 40 34 30 Sound Power dB A 56 58 Outdoor Unit RXG50...

Page 16: ...ed Circuit Board Connector Wiring Diagram Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 7 2 Outdoor Unit 10 2 1 RXG25 35K2V1B 10 2 2 RXG50K2V1B 12 SiBE061121 book Page 6 Friday April 22 2011 4 12 PM ...

Page 17: ...8 S33 Connector for room temperature thermistor 9 S34 Connector for radiant panel thermistor 10 S46 Connector for display PCB 11 FG Connector for earth 12 V1 Varistor 13 JB Fan speed setting when compressor stops for thermostat OFF JC Power failure recovery function Refer to page 135 for detail 14 F1U Fuse 3 15A 250V 15 LED A LED for service monitor green 1 S56 Connector for main PCB 2 S1W Forced ...

Page 18: ...it SiBE061121 8 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Main PCB S6 S30 S21 S32 S33 S34 S26 S46 FG LED A S1 V1 F1U S2 JB JC 2P273247 1 SiBE061121 book Page 8 Friday April 22 2011 4 12 PM ...

Page 19: ...61121 Indoor Unit Printed Circuit Board Connector Wiring Diagram 9 PCB 2 Display PCB PCB 3 Service PCB S56 S1W H3P H1P H2P 3P273252 1 S2W 1 S27 3P273254 1 SiBE061121 book Page 9 Friday April 22 2011 4 12 PM ...

Page 20: ...pansion valve coil 3 S40 Connector for overload protector 4 S50 Connector for magnetic relay 5 S70 Connector for fan motor 6 S80 Connector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 S100 Connector for forced cooling operation switch PCB 9 HL3 HN3 Connector for filter PCB 10 HR2 Connector for reactor 11 U V W Connector for com...

Page 21: ... Filter PCB PCB 2 Main PCB PCB 3 Forced Cooling Operation Switch PCB HR1 HL2 S50 on main PCB 3P254234 1 FU1 HN2 S FU3 AC2 E1 E2 AC1 S11 V3 V2 S10 J5 S90 FU2 S100 S50 2P254206 9 S70 S40 S20 S80 HL3 HN3 V1 LED A U VW HR2 SW1 S110 3P255755 1 SiBE061121 book Page 11 Friday April 22 2011 4 12 PM ...

Page 22: ...ctor for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 AC1 AC2 Connector for terminal board power supply 9 E1 E2 Connector for earth 10 HR1 HR2 Connector for reactor 11 U V W Connector for compressor 12 FU1 Fuse 30 A 250 V 13 FU2 FU3 Fuse 3 15 A 250 V 14 V2 V3 V5 V6 V11 Varistor 1 S52 S102 Connector for main PCB 2 LED A LED for serv...

Page 23: ...Wiring Diagram 13 PCB Detail PCB 1 Main PCB PCB 2 Service Monitor PCB V3 V11 AC1 FU2 E1 E2 FU3 W 2P282217 1 S40 S20 S80 V U S70 S90 S51 S10 AC2 S101 V5 V6 V2 FU1 HR1 HR2 S102 SW1 3P169059 1 LED A SW4 C S52 SiBE061121 book Page 13 Friday April 22 2011 4 12 PM ...

Page 24: ... 1 11 Inverter POWERFUL Operation 26 1 12 Other Functions 27 2 Function of Thermistor 29 3 Control Specification 30 3 1 Mode Hierarchy 30 3 2 Frequency Control 31 3 3 Controls at Mode Changing Start up 33 3 4 Discharge Pipe Temperature Control 35 3 5 Input Current Control 36 3 6 Freeze up Protection Control 37 3 7 Heating Peak cut Control 37 3 8 Outdoor Fan Control 38 3 9 Liquid Compression Protec...

Page 25: ...s set by the following 2 parameters coming from the operating indoor unit The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature Additional Control Parameters The target frequency is adapted by additional parameters in the following cases Frequency restrictions Initial settings Forced cooling operation Inverter Principle To...

Page 26: ...ture is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency Forced Cooling Operation Refer to page 131 for detail Refrigerant circulation rate high high f low f freq variable Refrigerant circulation rate low high speed low speed R2812 Amount of heat exchanged air large freq con...

Page 27: ...de of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution You can adjust the position of the louvers Auto Swing The swinging range of the flap is the same in any operation mode R14632 45 45 R14633 25 4 5 R14634 SiBE061121 book Page 17 Monday April 25 2011 3 20 PM ...

Page 28: ...ep SL is not available The airflow rate is automatically controlled within this range when the FAN setting button is set to automatic Cooling The following drawing explains the principle of fan speed control for cooling Heating On heating mode the fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temp...

Page 29: ...ronic expansion valve to achieve the target panel temperature The panel temperature is categorized into stop dropping keep up and return zones The target panel temperature is 55 C at maximum but it may be lower depending on the condition Operation Stop Control In case operation stops during RADIANT operation including thermostat off In case any of the following events occur while the indoor electr...

Page 30: ...speed of indoor unit fan Note The only difference between RADIANT 1 and RADIANT 2 is the movement of the indoor unit fan In RADIANT 1 the rotation speed of the indoor unit fan is controlled depending on the difference between the set temperature and the room temperature In RADIANT 2 the rotation speed of the indoor unit fan is constant R14637 Function RADIANT 1 RADIANT 2 POWERFUL operation availab...

Page 31: ...the target temperature is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor temperature at start up Target temperature X Thermostat OFF point Y Thermostat ON point Z 24ºC or more Room thermistor temperature at start up X 2 5ºC X 0 5ºC or Y 0 5ºC zone B continues fo...

Page 32: ...perature Ts determines the target temperature Tt Ts 18 30 C 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 3 Thermostat ON OFF point and mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr Tt 3 0 C 2 Cooling Heating switching point Tr Tt 2 5 C 3 Thermostat ON OFF point is the same as the ON OF...

Page 33: ... from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating Radiant 10 seconds Cooling Dry Heating Radiant Refer to Temperature Control on page 15 for detail B A OFF ON C Room thermistor temperature target temperature 1 5 C R12319 Cooling 0 5 C Dry 0 5 C Cool...

Page 34: ...target temperature slightly in the case of cooling or lowers it slightly in the case of heating This prevents excessive cooling in summer and excessive heating in winter to ensure comfortable sleeping conditions and also conserves electricity Cooling Heating Radiant R10870 TIMER operation NIGHT SET Mode ON Target temperature 0 5 C temperature shift Operation stops at the set hours 1 hour 0 5 C 2 C...

Page 35: ...ng the ECONO button When this function is activated the maximum capacity also decreases ECONO operation can only be set when the unit is running Pressing the ON OFF button on the remote controller cancels the function ECONO operation is available when the unit is in AUTO COOL DRY or HEAT operation and not available in RADIANT or FAN operation ECONO operation and POWERFUL operation cannot be used a...

Page 36: ...T 1 RADIANT operation with heating it is not available in RADIANT 2 RADIANT operation only Operation mode Fan speed Target temperature COOL H tap A rpm 18 C DRY Dry rotating speed A rpm Lowered by 2 5 C HEAT RADIANT 1 H tap A rpm 32 C FAN H tap A rpm AUTO Same as cooling heating in POWERFUL operation The target temperature is kept unchanged R13571 Target temp Fan A rpm 18 C H tap Set tap 20 minute...

Page 37: ...tton for 5 to 9 seconds while the unit is not operating Refer to page 131 for detail Note When the ON OFF button is pressed for 10 seconds or more the forced cooling operation is stopped 1 12 4 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter as a single highly effective filter The filter traps...

Page 38: ... time you press the Brightness button on the remote controller the brightness of the indoor unit display changes to high low or off Refer to the operation manual for details Timer lamp yellow Operation lamp green Radiant lamp red Indoor unit display R14639 SiBE061121 book Page 28 Monday April 25 2011 3 20 PM ...

Page 39: ...e temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the outdoor electronic expansion valve opening so that the target discharge pipe temperature can be obtained 2 In cooling operation the indoor heat exchanger thermistor is used for freeze up protection control If the indoor heat exchanger temperature drops...

Page 40: ...es Note Unless specified otherwise a dry operation command is regarded as cooling operation and a radiant operation command is regarded as heating operation Air conditioner control mode Forced operation mode Forced cooling operation Power transistor test mode Normal operation mode Fan Cooling includes drying Heating Heating Defrosting Stop indoor unit OFF Preheating operation Discharging from capa...

Page 41: ...g the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following functions Four way valve operation compensation draft prevention pressure difference upkeep 4 Dete...

Page 42: ... more than a certain fixed time the frequency is adjusted according to the D value When the D value is low the frequency is lowered When the D value is high the frequency is increased 3 Frequency management when other controls are functioning When frequency is dropping Frequency management is carried out only when the frequency drops For limiting lower limit Frequency management is carried out onl...

Page 43: ...pe temperature 10 C OFF condition Discharge pipe temperature 12 C Radiation fin temperature 90 C Control B ON condition Discharge pipe temperature 20 C OFF condition Discharge pipe temperature 22 C Radiation fin temperature 90 C 50 Class Outdoor temperature 10 C Control A Outdoor temperature 10 C Control B Control A ON condition Discharge pipe temperature 6 C OFF condition Discharge pipe temperatu...

Page 44: ...onditions 1 When starting compressor for heating 2 When the operation mode changes from heating to cooling 3 When starting compressor for defrosting 4 When starting compressor for heating after defrosting 5 When starting compressor for the first time after resetting with the power ON 6 When starting compressor after the fault of switching over cooling heating The lower limit of frequency keeps A H...

Page 45: ...r Detail Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Up zone The upper limit of frequency increases Reset zone The upper limit of frequency is canceled 25 35 class 50 class A C 110 110 B C 105 103 C C 101 101 5 D C 99 100 E C 97 95 R14642 Discharge pipe tem...

Page 46: ...it of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is pulled down by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled Limitation of current dropping and stop value according to the outdoor temperature The current drops when outdoor temperature becomes hig...

Page 47: ...requency upper limit to prevent abnormal high pressure Detail R14644 Reset zone Indoor heat exchanger thermistor temperature Up zone Keep zone Dropping zone Stop zone 0 C 5 C 7 C 9 C 13 C Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Up zone The upper limit o...

Page 48: ...rol while forced cooling operation The outdoor fan is controlled as well as normal operation while the forced cooling operation 6 Fan speed control for POWERFUL operation The rotation speed of the outdoor fan is increased while the POWERFUL operation 7 Fan speed control while indoor outdoor unit quiet operation The rotation speed of the outdoor fan is reduced by the command of the indoor outdoor u...

Page 49: ...ates for 6 minutes More than A minutes of accumulated time pass since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with outdoor heat exchanger temperature J C 25 35 class 50 class A minutes 28 44 B Hz 76 55 C Hz 86 90 D seconds 50 60 E seconds 480 340 F seconds 60 50 G seconds 5 15 H pulse 350 450 J C 4 18 4 12 Frequency Compres...

Page 50: ... expansion valve control h function not function Under defrost control Cooling Starting control h Control when the frequency changes h h Target discharge pipe temperature control h h h High discharge pipe temperature control h h h h h h h h h Pressure equalizing control h Opening limit control h Heating Starting control h Control when the frequency changes h h Target discharge pipe temperature con...

Page 51: ...ting Operation Control The outdoor electronic expansion valve opening is controlled when the operation starts and prevents the superheating or liquid compression 3 11 5 Control when the frequency changes When the target discharge pipe temperature control is active if the target frequency is changed for a specified value in a certain time period the target discharge pipe temperature control is canc...

Page 52: ...eating When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C indoor heat exchanger temperature Adjustment when the thermistor is disconnected When the disconnection is ascertained the compressor continues operation for 9 minutes and then stops When the compressor stops repeatedly the system is shut down 3 11 8 Target Dis...

Page 53: ...erant shortage The power consumption is low comparing with that in the normal operation when refrigerant is insufficient and refrigerant shortage is detected by checking a power consumption II Detecting by discharge pipe temperature If the discharge pipe temperature is higher than the target discharge pipe temperature and the outdoor electronic expansion valve is fully open for more than the speci...

Page 54: ... COOL HEAT FAN Operation 52 2 4 RADIANT Operation 53 2 5 Temperature Setting 54 2 6 Adjusting the Airflow Direction and Rate 55 2 7 POWERFUL Operation 57 2 8 OUTDOOR UNIT QUIET Operation 58 2 9 ECONO Operation 59 2 10 OFF TIMER Operation 60 2 11 ON TIMER Operation 61 2 12 WEEKLY TIMER Operation 62 2 13 Quick Reference 68 SiBE061121 book Page 44 Friday April 22 2011 4 12 PM ...

Page 55: ...ently Providing instructions to the user can reduce requests for servicing by 80 However proficient the installation and operating functions of the air conditioning system are the customer may fault either the room air conditioner or its installation work when it is actually due to improper handling The installation work and the handing over of the unit can only be considered completed when its ha...

Page 56: ...lamp yellow OPERATION lamp green RADIANT lamp red Page 12 Signal receiver It receives signals from the remote controller When the unit receives a signal you will hear a beep sound Case Sound type Operation start beep beep Setting changed beep Operation stop long beep Indoor unit ON OFF switch Press this switch once to start operation Press once again to stop it The operation mode refer to the foll...

Page 57: ...not remove or care and clean the panel until the surface temperature of the panel decreases Open the front panel Strings Air filter upper Front panel stopper Air filter lower Outdoor temperature sensor back Drain hose Model name plate Refrigerant piping and inter unit wiring Earth terminal It is inside of this cover Titanium apatite photocatalytic air purifying filter It is inside of air filter lo...

Page 58: ...tance for communi cation is approximately 7m FAN setting button It selects the airflow rate setting Page 15 TEMPERATURE adjustment buttons It changes the temperature setting Page 13 ON OFF button Press this button once to start operation Press once again to stop it Page 11 Front cover Open the front cover Page 8 Display LCD It displays the current settings In this illustration each section is show...

Page 59: ...setting Page 19 20 It cannot be used for the WEEKLY TIMER operation SELECT button It changes the ON OFF TIMER and WEEKLY TIMER settings Page 19 20 21 ECONO button ECONO operation Page 18 SWING button Adjusting the airflow direction Page 14 Lamp brightness setting button Page 9 ON TIMER button Page 20 CLOCK button Page 10 WEEKLY button PROGRAM button COPY button BACK button NEXT button WEEKLY TIMER...

Page 60: ...her When the system is not used for a long time take the batteries out The batteries will last for approximately 1 year If the remote controller display begins to fade and the degradation of reception performance occurs within a year however replace both batteries with new size AAA LR03 alkaline The attached batteries are provided for the initial use of the system The usable period of the batterie...

Page 61: ...he current day of the week Press 3 blinks Press 4 to set the clock to the present time Holding down or rapidly increases or decreases the time display Press 5 Point the remote controller at the indoor unit when pressing the buttons blinks NOTE Note on setting the clock If the indoor unit s internal clock is not set to the correct time the ON TIMER OFF TIMER and WEEKLY TIMER will not operate punctu...

Page 62: ... room gets warmer In HEAT operation frost may occur on the outdoor unit and lower the heating capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit COOL This air conditioner cools the room by releasing the heat in the room outside Therefore the cooling performance of the air conditioner may be...

Page 63: ...r to warm up the room quickly RADIANT2 Use this operation to prioritize quiet and currentless heating operation or when the noise from RADIANT1 operation bothers you The gentle breeze operation starts from the beginning CAUTION During the RADIANT operation the surface temperature of the panel will be about 55 C at maximum Even after the RADIANT operation is finished the surface temperature of the ...

Page 64: ...ile it is not operating Connecting outdoor unit RXG25 35 1 15W Other outdoor units 15 20W The outdoor unit consumes 40 to 55W of power at the time of compressor preheating If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker off Use the air conditioner in the following conditions MODE Operating conditions If operation is continued out o...

Page 65: ... Press when the flap has reached the desired position disappears from the LCD To adjust the louvers at desired position Hold the knob and move the louvers You will find a knob on the left side and the right side blades When the unit is installed in the corner of a room the direction of the louvers vertical blades should be facing away from the wall If they face the wall the wall will block off the...

Page 66: ...ak level In DRY or RADIANT operation the airflow rate setting is not variable NOTE Note on the angles of the flap The flap swinging range is the same by all operation See the figure Upper limit Lower limit Stop operation 45 70 Note on airflow rate setting At smaller airflow rates the cooling heating effect is also smaller CAUTION Always use a remote controller to adjust the angles of the flap If y...

Page 67: ... be used together with RADIANT2 ECONO or OUTDOOR UNIT QUIET operation Priority is given to the function of whichever button is pressed last POWERFUL operation can only be set when the unit is running Pressing causes the settings to be canceled and the disappears from the LCD POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with...

Page 68: ...be lower This is convenient when you need to consideration for your neighbourhood NOTE Notes on OUTDOOR UNIT QUIET operation This function is available in COOL HEAT and AUTO operation This is not available in RADIANT FAN and DRY operation POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time Priority is given to the function of whichever button is pressed last Even th...

Page 69: ... used at same time Time Maximum during normal operation Maximum during ECONO operation Normal operation ECONO operation From start up until set temperature is reached Running current and power consumption This diagram is a representation for illustrative purposes only The maximum running current and power consumption of the air conditioner in ECONO operation vary with the connecting outdoor unit N...

Page 70: ...again and setting time are displayed on the LCD The OPERATION lamp blinks and the TIMER lamp lights yellow Page 5 Display To cancel OFF TIMER operation Press and setting time disappear from the LCD and day of the week are displayed on the LCD NOTE Notes on TIMER operation When TIMER is set the present time is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The memory...

Page 71: ...the time setting rapidly Press 3 again and setting time are displayed on the LCD The OPERATION lamp blinks and the TIMER lamp lights yellow Page 5 Display To cancel ON TIMER operation Press and setting time disappear from the LCD and day of the week are displayed on the LCD To combine ON TIMER and OFF TIMER A sample setting for combining the 2 timers is shown below Present time 23 00 The unit oper...

Page 72: ... because these settings are the same as those for Monday Page 24 6 00 8 30 17 30 22 00 25 C 27 C Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF Saturday No timer settings Sunday Make timer settings up to programs 1 4 Page 22 8 00 10 00 19 00 21 00 27 C 27 C 25 C ON OFF OFF ON Program 1 Program 2 Program 3 Program 4 ON ON OFF OFF Up to 4 reservations per day and 28 reservations per week can ...

Page 73: ...elect the desired day of the week and reservation number Pressing changes the reservation number and the day of the week Press 3 The day of the week and reservation number will be set and blink Press 4 to select the desired mode Pressing changes or setting in sequence Pressing alternates the following items appearing on the LCD in rotational sequence ON TIMER OFF TIMER blank In case the reservatio...

Page 74: ...urther settings repeat the procedure from step 4 The TIMER lamp lights yellow Page 5 Display Press 10 to complete the setting is displayed on the LCD and WEEKLY TIMER operation is activated A reservation made once can be easily copied and the same settings used for another day of the week Refer to copy mode Page 24 NOTE Notes on WEEKLY TIMER operation Do not forget to set the clock on the remote c...

Page 75: ...N OFF Monday Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF Tuesday to Friday Setting Displays Confirmation Copy Paste Normal Press 1 Press 2 to confirm the day of the week to be copied Press 3 The whole reservation of the selected day of the week will be copied Press 4 to select the destination day of the week Press 5 Be sure to direct the remote controller toward the indoor unit and check...

Page 76: ...ect the reservation number and press The mode is switched to setting mode Go to setting mode step 2 Page 22 Press 3 to exit confirming mode To deactivate WEEKLY TIMER operation Press while is displayed on the LCD The will disappear from the LCD The TIMER lamp goes off To reactivate the WEEKLY TIMER operation press again If a reservation deactivated with is activated once again the last reservation...

Page 77: ...ervation will be deleted Press 6 If there are still other reservations WEEKLY TIMER operation will be activated The reservations for each day of the week This function can be used for deleting reservations for each day of the week It can be used while conf irming or setting reservations Press 1 to select the day of the week to be deleted Hold 2 for 5 seconds The reservation of the selected day of ...

Page 78: ...Operation Manual SiBE061121 68 Operation Manual 2 13 Quick Reference Quick Reference 3P276869 1 SiBE061121 book Page 68 Friday April 22 2011 4 12 PM ...

Page 79: ...Way Valve Abnormality 93 4 15 Discharge Pipe Temperature Control 95 4 16 High Pressure Control in Cooling 96 4 17 Compressor System Sensor Abnormality 97 4 18 Position Sensor Abnormality 99 4 19 DC Voltage Current Sensor Abnormality 25 35 Class 102 4 20 CT or Related Abnormality 50 Class 103 4 21 Thermistor or Related Abnormality Outdoor Unit 105 4 22 Electrical Box Temperature Rise 107 4 23 Radia...

Page 80: ...1121 70 Service Diagnosis 5 11 Outdoor Fan System Check 127 5 12 Main Circuit Short Check 127 5 13 Capacitor Voltage Check 128 5 14 Power Module Check 128 SiBE061121 book Page 70 Friday April 22 2011 4 12 PM ...

Page 81: ...2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Service Monitor The indoor unit has one green LED LED A on the control PCB When the microcomputer works in order the LED A blinks 1 2 Outdoor Unit The outdoor unit has one green LED LED A on the PCB When the microcomputer works in order the...

Page 82: ...ng operation cannot be used when the outdoor temperature is 20 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 C Diagnose with remote controller indication 76 The unit operates but does not cool or does not heat Check for wiring and piping errors in the connection between the indoor unit and outdoor unit Check for thermistor detection errors Check if the t...

Page 83: ...n to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try the check method 2 Refer to page 74 No Code No Code No Code 1 00 14 C7 27 UA 2 U4 15 A3 28 UH 3 L5 16 H8 29 P4 4 E6 17 H9 30 L3 5 H6 18 C9 31 L4 6 H0 19 C4 ...

Page 84: ...ide number blinks 4 Press the Temp or button and change the figure until you hear the beep s 5 Diagnose by the sound beep The left side number does not correspond with the error code beep beep The left side number corresponds with the error code but the right side number does not long beep Both the left side and right side numbers correspond with the error code Error codes and description Refer to...

Page 85: ...e error code but the right side number does not long beep Both the left side and right side numbers correspond with the error code 9 Determine the error code The numbers indicated when you hear the long beep are the error code Error codes and description Refer to page 76 10 Press the Mode button for 5 seconds to exit from the service check mode When the remote controller is left untouched for 60 s...

Page 86: ... related abnormality 84 CE Radiant panel thermistor or related abnormality 84 Outdoor Unit E1 Outdoor unit PCB abnormality 87 E5 OL activation compressor overload 89 E6 Compressor lock 90 E7 DC fan lock 91 E8 Input overcurrent detection 92 EA Four way valve abnormality 93 F3 Discharge pipe temperature control 95 F6 High pressure control in cooling 96 H0 Compressor system sensor abnormality 97 H6 P...

Page 87: ...ting Note Check the following connector Check the combination of the indoor and outdoor unit OK Check the connection of connectors See Note Correct the connection OK Error repeats YES NO NO YES NO YES R11704 Caution To secure the connection once disconnect the connector and then reconnect it Match the compatible models Replace the indoor unit PCB 1 Replace the indoor unit PCB 1 Completed Be sure t...

Page 88: ...temperature detected by the indoor heat exchanger thermistor is used for the heating peak cut control operation halt outdoor fan stop etc Malfunction Decision Conditions Freeze up protection control During cooling operation the indoor heat exchanger temperature is below 0 C Heating peak cut control During heating operation the indoor heat exchanger temperature is above 65 C Supposed Causes Short c...

Page 89: ...e indoor heat exchanger Replace the indoor unit PCB Replace the thermistor Does it conform to the thermistor characteristic chart Check the air filter Check the dust accumulation on the indoor heat exchanger Is there any short circuit Is it very dirty Is it very dirty Check the air passage Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Si...

Page 90: ...mal fan motor operation Malfunction Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Supposed Causes Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor Defective indoor unit PCB ...

Page 91: ...he fan rotate Is the motor power supply voltage 310 340 VDC generated Is the motor control voltage 15 VDC generated Turn off the power supply and rotate the fan by hand Turn the power on and start operation Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check No 02 Check the output of the fan motor connector R14436 NO YES YES NO YES NO Re...

Page 92: ...not rise Operation stops when any of these cases is detected by the system Freeze up protection control The temperature detected by the radiant panel thermistors is used to prevent the indoor unit from freezing during cooling operation Malfunction Decision Conditions Radiant panel temperature rise The radiant panel surface temperature calculated by the radiant panel thermistors is above 70 C Indoo...

Page 93: ...lean the indoor heat exchanger Is it very dirty YES Clean the air filter Is it very dirty NO Completed Error repeats Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check No 12 Check the indoor electronic expansion valve coil YES NO Start operation within the specified range of the outdoor temperature Condition OK Check the indoor heat exc...

Page 94: ...onnection of connector Defective thermistor Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 119 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor CE Radiant panel thermistor YES R14406 NO Check No 01 Check the thermistor resistance value YES NO Caution Correct the connection Replace the thermistor Replace the indoor unit PCB Is it normal Is it normal Check the con...

Page 95: ...ltage of the connection wires on the indoor terminal board between No 1 and No 3 and between No 2 and No 3 YES YES Replace the indoor unit PCB Locate the cause of the disturbance of the power supply waveform and correct it NO R14622 NO YES YES NO NO Caution Correct the indoor unit outdoor unit connection wires Diagnose the outdoor unit PCB Before you check the LED A cancel the standby electricity ...

Page 96: ...Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R11707 Caution NO YES YES YES NO NO Check the code numbers 2P01234 for example of the indoor and outdoor unit PCB with the Parts List Match the compatible models Change for the correct PCB Replace the indoor unit PCB or the outdoor unit PCB OK Matched compatibly Correct the connec...

Page 97: ...entary fall of voltage Momentary power failure etc Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO YES YES R14186 YES NO NO Replace the outdoor unit PCB Ground the system Zero cross signal abnormality Replace the outdoor unit PCB Replace the harness Check to see if the outdoor unit is grounded Is LED A blinking G...

Page 98: ... outdoor unit PCB Noise Momentary fall of voltage Momentary power failure Troubleshooting R7183 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged YES NO NO YES Turn on the power again Check to see if the unit is grounded Replace the outdoor unit PCB Ground the system The cause can be external factors other than malfunction Investigat...

Page 99: ...ck No 01 Refer to P 119 Check No 12 Refer to P 121 Check No 13 Refer to P 122 Check No 14 Refer to P 122 R14438 Caution YES NG Discharge pipe thermistor NO OK OK NG Refrigerant shortage Water mixed Stop valve NG OK NG OK Insert the thermistor in position Replace the discharge pipe thermistor Replace the outdoor electronic expansion valve or the coil Refer to the refrigerant line check procedure Re...

Page 100: ...mpressor locked Compressor harness disconnected Troubleshooting Check No 15 Refer to P 123 Turn off the power Disconnect the harnesses U V and W R14623 Caution NO YES YES NO NO YES Check No 15 Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and restart the system Precaution before turning on the power again Make sure the power has been off for...

Page 101: ...nnection of the fan motor Foreign matters stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 124 R14410 Caution YES YES NO YES NO NO YES NO Turn on the power Rotate the fan Check No 16 Check the rotation pulse input on the outdoor unit PCB Turn off the power and reconnect the connector Remove them Replace the outdoor fan motor Replace the outdoor...

Page 102: ...e sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrupted by an input overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again R14624 NO YES YES NO Start operation and measure the input current Check No 18 Chec...

Page 103: ...on continues over 1 10 minutes depending on the model after operating for 5 10 minutes depending on the model Cooling Dry room thermistor temp indoor heat exchanger temp 5 C Heating indoor heat exchanger temp room thermistor temp 5 C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of four way val...

Page 104: ...ure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R14441 Refrigerant shortage Water mixed Stop valve Four way valve coil disconnected loose Harness out of connector Any thermistor disconnected Check No 01 Check the thermistors Check No 14 Check the refrigerant line Check No 13 Check the four way valve switching output Check the continuity of the...

Page 105: ...way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 119 Check No 12 Refer to P 121 Check No 14 Refer to P 122 Stop temperatures A C B C 1 above 45 Hz rising above 40 Hz dropping 110 97 2 30 45 Hz rising 25 40 Hz dropping 105 92 3 below 30 Hz rising below 25 Hz dropping 99 86 A C B C 110 95 R14412 Caution NG OK OK OK NG NG Disc...

Page 106: ...t PCB Troubleshooting Check No 01 Refer to P 119 Check No 12 Refer to P 121 Check No 17 Refer to P 126 Check No 18 Refer to P 126 Check No 19 Refer to P 127 R14413 Caution Replace the fan motor Reconnect the connector or fan motor lead wires Replace the stop valve Replace the outdoor heat exchanger thermistor Replace the outdoor unit PCB Replace the outdoor electronic expansion valve or the coil R...

Page 107: ...e value The DC voltage before compressor start up is below 50 V Supposed Causes Broken or disconnection of harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO R11712 YES Turn off the power and turn it on again YES NO Replace the harness No problem Keep on running Replace the outdoor...

Page 108: ...O YES Replace the reactor NO YES Replace the compressor or the compressor relay harness Restart the operation again and if the error occurs again replace the outdoor unit PCB NO YES Disconnect the reactor from the outdoor unit PCB and measure the resistance value between reactor terminals with tester Disconnect the compressor relay harness from the outdoor unit PCB and measure the resistance value...

Page 109: ...sition detection circuit Malfunction Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Supposed Causes Disconnection of the compressor relay cable Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is out of specification SiBE0611...

Page 110: ...k No 20 Check the short circuit of the diode bridge Check No 15 Check with the inverter checker Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB Replace the compressor Correct the power supply or replace the outdoor unit PCB Reconnect the...

Page 111: ...6 NO NO YES NO YES YES Check No 15 Check with the inverter checker Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB Replace the compressor Correct the power supply or replace the outdoor unit PCB Reconnect them as specified Inverter check...

Page 112: ...e input current Malfunction Decision Conditions The compressor running frequency is above 52 Hz If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor unit PCB Troubleshooting Replace the outdoor unit PCB Caution Be sure to turn off the power switch before connecting or disconnecting connectors or p...

Page 113: ...tected input current Malfunction Decision Conditions The compressor running frequency is more than 55 Hz and the CT input current is below 0 5 A If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective power module Breakage of wiring or disconnection Defective reactor Defective outdoor unit PCB SiBE061121 boo...

Page 114: ...tart operation Current guideline Compressor running 320 50 VDC Any LED OFF Running current as shown at right with relay cable 1 or 2 Voltage within the allowable range Supply voltage 15 Replace the outdoor unit PCB Replace the outdoor unit PCB Replace the outdoor unit PCB Check the supply voltage Replace the compressor Capacitor charged when the indoor unit or outdoor unit main relay turns on Risi...

Page 115: ...s judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Defective thermistor corresponding to the error code Defective heat exchanger thermistor in the case of J3 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation Defective outdoor uni...

Page 116: ...rmistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Replace the indoor heat exchanger thermistor Replace the outdoor unit PCB Error displayed again on remote controller Indoor heat exchanger thermistor functioning Check No 01 Check the thermistor resistance value Che...

Page 117: ...off the radiation fin temperature is above A C The error is cleared when the radiation fin temperature drops below B C To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B C Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor u...

Page 118: ...again Check the radiation fin temperature Check No 17 Check the installation condition Radiation fin dirty Above A C Check No 19 Check the outdoor fan or related Error again or outdoor fan activated Replace the outdoor unit PCB Clean up the radiation fin Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace the fan motor Correct the conn...

Page 119: ...is above A C The error is cleared when the radiation fin temperature drops below B C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Silicon grease is not applied properly on the r...

Page 120: ...ation condition NO YES YES Above A C Radiation fin dirty Check No 19 Check the outdoor fan or related Error displayed again Has PCB been replaced Check if the silicon grease applied properly on the radiation fin If not apply it See Note Silicon grease Part No 1172698 Replace the outdoor unit PCB Clean up the radiation fin Be sure to turn off the power switch before connecting or disconnecting conn...

Page 121: ...ing A speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Supposed Causes Poor installation condition Closed stop valve Defective power module Wrong internal ...

Page 122: ...k No 17 Check the installation condition Check No 15 Check with the inverter checker Turn off the power and disconnect the harnesses U V and W Turn off the power and reconnect the harnesses Turn on the power again and start operation Turn off the power and turn it on again to start the system See if the same error occurs Check the supply voltage Keep on using as it is Check the connectors and othe...

Page 123: ...rigerant shortage detection III Refrigerant shortage is detected by checking the difference between suction and discharge temperature Malfunction Decision Conditions Refrigerant shortage detection I The following conditions continue for 7 minutes 25 35 class Input current input voltage A output frequency B Output frequency C 50 class Input current D output frequency E Output frequency F Refrigeran...

Page 124: ...ipe thermistor indoor or outdoor heat exchanger thermistor room or outdoor temperature thermistor Closed stop valve Refrigerant shortage refrigerant leakage Poor compression performance of compressor Defective outdoor electronic expansion valve K C Cooling room thermistor temperature indoor heat exchanger temperature 4 0 outdoor heat exchanger temperature outdoor temperature 4 0 Heating indoor hea...

Page 125: ...the union Check the power transistor harness for looseness Correct it as required Also replace the cracked pipe Check the pipes for improper contact Correct them as required Also replace the cracked pipe Replace the electronic expansion valve Replace the defective one s Completed Refrigerant shortage error again Oil oozing at internal piping Stop valve closed Compressor vibrating too much Oil oozi...

Page 126: ...e detected by the DC voltage detection circuit is below 150 180 V depending on the model Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcomputer The voltage is over 400 V If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Supposed Causes Supply voltage ...

Page 127: ...or disconnecting connectors or parts may be damaged NO YES NO YES Precaution before turning on the power again Check the supply voltage Disturbance factors Noise Power supply distortion Repeat a few times Make sure the power has been off for at least 30 seconds NO YES Reconnect it Check the connection of the compressor harness Loose or disconnected Turn on the power again System restarted Supply v...

Page 128: ...PM1 can not be received for 9 seconds The error counter is reset when the data from the PM1 can be successfully received Supposed Causes Defective outdoor unit PCB Troubleshooting R7185 Caution NO YES Turn off the power and turn it on again Error again Replace the outdoor unit PCB The cause can be an external factor other than the malfunction Observe the operating condition in long term Be sure to...

Page 129: ...own in the table and the graph below For the models in which the thermistor is directly mounted on the PCB disconnect the connector for the PCB and measure Thermistor temperature C Resistance kΩ 20 211 0 15 150 0 10 116 5 5 88 0 0 67 2 5 51 9 10 40 0 15 31 8 20 25 0 25 20 0 30 16 0 35 13 0 40 10 6 45 8 7 50 7 2 R25 C 20 kΩ B 3950 K Tester Resistance range R11906 kΩ 150 100 50 15 0 15 30 45 C R1190...

Page 130: ...veforms Check Check No 11 Measure the power supply waveform between No 1 and No 2 on the terminal board and check the waveform disturbance Check to see if the power supply waveform is a sine wave Fig 1 Check to see if there is waveform disturbance near the zero cross sections circled in Fig 2 7 6 5 4 3 2 1 S1 R12099 Motor power supply voltage 310 340 VDC Unused Unused GND Motor control voltage 15 ...

Page 131: ...ot generate latching sound in the above step 2 disconnect the connector and check the continuity using a tester 4 Check the continuity between the pins 1 6 2 6 3 6 and 4 6 If there is no continuity between the pins the EV coil is faulty 5 If the continuity is confirmed in the above step 3 the PCB is faulty Note Please note that the latching sound varies depending on the valve type Harness 5P 6P Co...

Page 132: ...uity Heating Continuity Replace the outdoor unit PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 Ω S80 voltage at 220 240 VAC with compressor on Fig 1 R11904 Fig 1 Voltage at S80 220 240 VAC Time Compressor ON Refrigerant system check Check for refrigerant leakage See the service diagnosis on refrigerant shortage U0 R8259 YES NO Place the ...

Page 133: ...rolytic capacitor drops to 10 VDC or below before carrying out the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise it may result in incorrect detection Step 3 A...

Page 134: ...y As the output frequency increases the LEDs blink quicker The LEDs look like they are lit 2 On completion of diagnose by the inverter checker be sure to re crimp the FASTON terminals Otherwise the terminals may be burned due to loosening 5 8 Rotation Pulse Check on the Outdoor Unit PCB Check No 16 25 35 class 1 Check that the voltage between the pins 10 11 is 15 VDC 2 Check if the Hall IC generat...

Page 135: ... off and power off Connect the connector S70 6 Check whether 2 pulses 0 15 VDC are output at the pins 1 4 when the fan motor is rotated 1 turn by hand When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB If NG in step 4 Defective Hall IC Replace the outdoor fan motor If OK in both steps 2 and 4 Replace the outdoor unit P...

Page 136: ...y Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor temperature The outdoor temperature should be 46 C or lower R11718 Not dirty YES YES Dirty NO NO NO YES Is the air filter or indoor outdoor heat exchanger dirty Is the connection pipe deformed Is the stop valv...

Page 137: ...n 1 kΩ short circuit occurs on the main circuit R7159 YES YES NO NO Outdoor fan system is functioning Check the outdoor fan system Go to Check No 15 Outdoor fan running Fan motor lead wire connector disconnected Reconnect the connector terminal of the tester in case of digital terminal 2 3 4 2 3 1 terminal of the tester in case of digital terminal 4 2 3 1 2 3 Resistance is OK several kΩ several MΩ...

Page 138: ...ng Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Follow the procedure below to measure resistance between the terminals of the DB1 and the terminals of the compressor with a multi tester Evaluate the measurement results for a judgment Multimeter DC voltage range R13538 Negative terminal of tester positive term...

Page 139: ...2 Forced Cooling Operation 131 3 Trial Operation 133 4 Field Settings 134 4 1 When 2 Units are Installed in 1 Room 134 4 2 Standby Electricity Saving 135 4 3 Jumper and Switch Settings 135 5 Application of Silicon Grease to a Power Transistor and a Diode Bridge 136 SiBE061121 book Page 129 Friday April 22 2011 4 12 PM ...

Page 140: ...caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation Refer to page 131 for forced cooling operation Gas stop valve Valve cap Close Liquid stop valve Service port R13628 Hexagonal wrench SiBE061121 bo...

Page 141: ...W on the indoor unit for 5 seconds 2 Press the forced cooling operation ON OFF switch SW1 on the outdoor unit Command frequency 25 35 class 58 Hz 50 class 66 Hz End The forced cooling operation ends when any of the following conditions is fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button S1W on the indoor unit again 3 Press the ON OFF ...

Page 142: ...oling Operation SiBE061121 132 Trial Operation and Field Settings Outdoor Unit 50 class LED A SW4 ON A B CD S102 SW1 S2 R14176 Forced operation ON OFF switch SiBE061121 book Page 132 Friday April 22 2011 4 12 PM ...

Page 143: ...he previous mode when the circuit breaker is restored In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature Trial operation may be disabled in either mode depending on the room temperature After trial operation is complete set the temperature to a normal level 26 C to 28 C in cooling mode 20 C to 24 C in heating mode For protection t...

Page 144: ...Remove the screw and remove the service cover 3 Disconnect the relay connectors for the indoor fan motor and for the indoor electronic expansion valve coil 4 Remove the 3 screws and pull out the terminal board and electrical box 5 Turn on the DIP switch S2W 1 on the service PCB Wireless Remote Controller 1 Remove the cover and take it off 2 Cut the address setting jumper 4 4 4 2 3 service cover R1...

Page 145: ...g pages Indoor unit page 8 Outdoor unit page 11 13 1 2 3 1 2 3 R11820 Function OFF Function ON The standby electricity saving function is turned OFF before shipping Jumper Function When connected factory set When cut JB on indoor unit PCB Fan speed setting when compressor stops for thermostat OFF effective only at cooling operation Fan speed setting Remote controller setting Fan rpm is set to 0 Fa...

Page 146: ...nd the diode bridge Applying the paste should be implemented in accordance with the following instruction NOTE There is the possibility of failure with smoke in case of bad heat radiation Wipe off the old silicon grease completely on a radiation fin Apply the silicon grease evenly to the whole Do not leave any foreign object such as solder or paper waste between the power transistor and the radiat...

Page 147: ...1 Appendix 137 Part 9 Appendix 1 Piping Diagrams 138 1 1 Indoor Unit 138 1 2 Outdoor Unit 139 2 Wiring Diagrams 140 2 1 Indoor Unit 140 2 2 Outdoor Unit 141 SiBE061121 book Page 137 Friday April 22 2011 4 12 PM ...

Page 148: ... 6 4CuT CROSS FLOW FAN FIELD PIPING M 6 4CuT FAN MOTOR FIELD PIPING 9 5CuT 9 5CuT REFRIGERANT FLOW COOLING HEATING 4D071597 INDOOR UNIT MV RADIANT PANEL THERMISTOR 6 4CuT THERMISTOR HEAT EXCHANGER 6 4CuT THERMISTOR ON HEAT EXCH 6 4CuT CROSS FLOW FAN FIELD PIPING M 6 4CuT FAN MOTOR FIELD PIPING 9 5CuT 12 7CuT REFRIGERANT FLOW COOLING HEATING 4D071598 SiBE061121 book Page 138 Monday April 25 2011 3 ...

Page 149: ...FOUR WAY VALVE ON HEATING 9 5CuT 3D059586J OUTDOOR UNIT 12 7CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT DISCHARGE PIPE THERMISTOR HEAT EXCHANGER THERMISTOR PROPELLER FAN MUFFLER HEAT EXCHANGER 7 9CuT 7 9CuT M FOUR WAY VALVE ON HEATING COMPRESSOR 12 7CuT 12 7CuT OUTDOOR AIR TEMPERATURE THERMISTOR 7 9CuT 7 9CuT 4 0CuT 4 0CuT CAPILLARY TUBE 4 CAPILLARY TUBE 2 CAPILLARY TUBE 3 ...

Page 150: ... 1 3 4 BLU 5 5 Z1C BLK R1T BRN YLW indoor R3T R4T SIGNAL RECEIVER 1 RED 1 BLU TRANSMISSION CIRCUIT WIRELESS REMOTE CONTROLLER PROTECTIVE EARTH F1U FUSE H1P H3P PILOT LAMP M1F FAN MOTOR M1S SWING MOTOR PCB1 PCB3 PRINTED CIRCUIT BOARD R1T R4T THERMISTOR S1 S57 CONNECTOR S1W OPERATION SWITCH S2W 4 UPWARD AIR FLOW LIMIT SWITCH X1M TERMINAL STRIP E3 EARTH TERMINAL HEAT EX Y1E ELECTRONIC EXPANSION VALVE...

Page 151: ...ERLOAD PROTECTOR FORCED OPERATION SWITCH VARISTOR TERMINAL STRIP ELECTRONIC EXPANSION VALVE COIL REVERSING SOLENOIDE VALVE COIL FERRITE CORE PRINTED CIRCUIT BOARD CONNECTOR THERMISTOR SURGE ARRESTER 3D065704C L1R GRN GRN YLW WHT WHT Z1C X1M Z5C X12A FU3 HR2 GRN 7 HR1 RED RED M1F E1 E2 L SA2 MRM20 3 15A M BLU V2 Z2C AC1 BLU MRM10 BRN N BRN 6 P 1 N L BRN S70 ORG 9 8 ORG 1 WHT WHT V11 Z3C 7 N V6 AC2 ...