Daikin Skyair RY71K Service Manual Download Page 68

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Si-71A

Electric Function Parts

Explanation of Function Operation

RY140KY1

RY140KTAL

M1C

Compressor

JT170BC-YE

JT170BC

J1HC

Crank Case Heater

33W

S1PH

Pressure Switch for Maintaining
High Pressure

ACB-DB82
OFF : 30

-1

(kg/cm²G)

ON : 22

1.5 (kg/cm²G)

S1LP

Pressure Switch for Low
Pressure Control

20PS-1164-1
OFF : –23

15 (cmHg)

ON : 0.5

0.3 (kg/cm²G)

K1M

Magnetic Switch

HOE-20F-TRA1

HOE-35F-TRA1

F1C

Overcurrent Relay

15A

28A

M1F

Outdoor Unit Fan (Upper)

100W

M2F

Outdoor Unit Fan (Lower)

65W

Q1L
Q2L

Outdoor Unit Fan Motor Safety
Thermostat

OFF : 135

5°C

ON : Below 120°C

C1R

Capacitor for M1F

C2R

Capacitor for M2F

A1P

Outdoor Unit Control PC Board

EC9641

A2P

Outdoor Control PC Board
(Models for the FJ Type Only)

—

R1T

Thermistor (for Outdoor Air)

ST9303

R2T

Thermistor (for Heat Exchanger) ST8604A

R3T

Thermistor (for Discharge Pipe)

ST8606

T1R

Transformer

TR21H16R2

TR21M16R2

Y1R

4-way Changeover Valve

VH40100

Y1E

Electronic Expansion Valve

EKV30D36

EKV-MOZS107BO (Coil)

K1S

Starting Relay

—

C3R,
C4R

M1C Capacitor

—

C5R

Starting Capacitor

—

Summary of Contents for Skyair RY71K

Page 1: ...Service Manual Si 71A Skyair R Y K Series lAddition of FUY FVY L FAY FA FHYC140KVE Models R71 100KVAL R125KTAL Models Applied Models lSkyair Cooling Only lSkyair Heat Pump...

Page 2: ...71F 100K 100F 100F 125K 125F 125F 140K FUY71FJ FVY71F FVY71L FAY71F A 100FJ 100F 100L 100F A 125FJ 125F 125L R35G R71K 50G 100K 60G 125K 140K Heat Pump FHYC35K FHYK35FJ FHYB35F FHY35F 50K 45FJ 45F 45F...

Page 3: ...ntenance Inspection Repair 18 1 1 Explanation 18 1 2 Field Setting 19 1 3 Initial Setting Contents 21 1 4 Local Setting Mode No 22 1 5 Detailed Explanation of Setting Modes 24 1 6 Centralized Group No...

Page 4: ...bleshooting by LED on The Indoor Unit s 97 5 2 Troubleshooting by LED on The Outdoor Unit s PC Board 97 6 Troubleshooting by Remote Controller Display LED Display 98 6 1 Explanation for Symbols 98 6 2...

Page 5: ...ing 148 2 6 Removal of Bottom Panel and Drain Pan 149 2 7 Removal of Swing Motor 152 3 For FUY71 100 125FJ 153 3 1 Removal of Air Filter 153 3 2 Removal of Suction Grille 154 3 3 Removal of Fan 155 3...

Page 6: ...moval of Compressor 188 3DUW SSHQGL 11111111111111111111111111111111111111111111111111111111111111111111111114 4 1 Piping Diagrams 192 1 1 Piping Diagrams 192 2 Wiring Diagram 203 2 1 Indoor Unit 203...

Page 7: ...Si 71A vi Table of Contents...

Page 8: ...ug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment...

Page 9: ...s can cause an electrical shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipmen...

Page 10: ...sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary...

Page 11: ...sulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor Caution I...

Page 12: ...3DUW 4 3DUW 4 PSURYHG 3RLQWV DQG PSURYHG 3RLQWV DQG PSURYHG 3RLQWV DQG PSURYHG 3RLQWV DQG XQFWLRQV XQFWLRQV XQFWLRQV XQFWLRQV 1 1999 New Models Functions 2 1 1 Cooling Only and Heat Pump 2 2 Present...

Page 13: ...it Appearance Improved O O O Reduction of Dimensions or Weight O O O Reduction of Operation sound O O O For Comfortable Air Conditioning Auto Restart Fan Operation Mode LCD Remote Controller Option LC...

Page 14: ...e Air Conditioning Automatic Cool Heat Change over Auto Restart Fan Operation Mode LCD Remote Controller Option Auto Swing Function Draft Preventive Function Ceiling Soiling Prevention Program Dry Hig...

Page 15: ...s or Weight O O O O Reduction of Operation Sound O 60 only O 71 only O 60 only O 71 only For Comfortable Air Conditioning Auto Restart Fan Operation Mode LCD Remote Controller Option LCD Liquid Crysta...

Page 16: ...ions or Weight Reduction of Operation Sound For Comfortable Air Conditioning Auto Restart Fan Operation Mode LCD Remote Controller Option LCD Liquid Crystal Display Auto Swing Function Ceiling Soiling...

Page 17: ...O 60 only O 71 only O 60 only O 71 only For Comfortable Air Conditioning Automatic Cool Heat Change over Auto Restart Fan Operation Mode LCD Remote Controller Option Auto Swing Function Draft Prevent...

Page 18: ...duction of Operation Sound For Comfortable Air Conditioning Automatic Cool Heat Change over Auto Restart Fan Operation Mode LCD Remote Controller Option Auto Swing Function Draft Preventive Function C...

Page 19: ...Present Model s Functions Si 71A 8 Improved Points and Functions...

Page 20: ...5HPRWH RQWUROOHU 5HPRWH RQWUROOHU 5HPRWH RQWUROOHU 2SHUDWLRQ 2SHUDWLRQ 2SHUDWLRQ 2SHUDWLRQ 1 Wired Remote Controller 10 1 1 Wired Remote Controller 10 2 Wireless Remote Controller 12 2 1 Wireless Remo...

Page 21: ...ontroller Si 71A 10 Remote Controller Operation 1 Wired Remote Controller 1 1 Wired Remote Controller Fig 3 BRC1B61 Remote Controller Fig 4 BRC1B62 Remote Comtroller BRC1B61 FH Y C FHK FAY FUY FHY BRC...

Page 22: ...Si 71A Wired Remote Controller Remote Controller Operation 11...

Page 23: ...ote Controller Si 71A 12 Remote Controller Operation 2 Wireless Remote Controller 2 1 Wireless Remote Controller Fig1 2 BRC7C613W FH Y C K BRC7C611W FAY FA BRC7C69W FAY F BRC7C529W FUY FJ FH Y C K FAY...

Page 24: ...Si 71A Wireless Remote Controller Remote Controller Operation 13...

Page 25: ...Wireless Remote Controller Si 71A 14 Remote Controller Operation 3 Wireless Remote Controller 3 1 Wireless Remote Controller Fig1 2 BRC7C612W FHYC K BRC7C64W FAY F FHYC K FAY F...

Page 26: ...Si 71A Wireless Remote Controller Remote Controller Operation 15...

Page 27: ...Wireless Remote Controller Si 71A 16 Remote Controller Operation...

Page 28: ...9 1 3 Initial Setting Contents 21 1 4 Local Setting Mode No 22 1 5 Detailed Explanation of Setting Modes 24 1 6 Centralized Group No Setting 29 2 Settings Concerning Maintenance 30 2 1 Indoor Unit PCB...

Page 29: ...nation Field set is carried out from the remote controller At time of installation or after maintenance inspection repair carry out field set according to the explanation below Incorrect settings will...

Page 30: ...s the button and choose the desired MODE NO 3 If the unit is under group control it is unified set factory set However if setting on each indoor unit bases or confirming after the setting use the MODE...

Page 31: ...d Refer to the instruction manual optional hand book for each optional accessory Procedure 1 When in the normal mode push the button for a minimum of four seconds and the FIELD SET MODE is entered 2 S...

Page 32: ...2 7m Selection of Air Flow Direction Air Flow Direction Adjust Air Flow Direction Adjust Range Setting Twin System No of Connected Indoor Units Twin System Individual Set External Static Pressure Long...

Page 33: ...Approx 2 500 hours Approx 1 250 hours Standard Type Approx 200 hours Approx 100 hours 1 Long life filter type Setting of filter sign indication time Change setting when Urtra long life filter is inst...

Page 34: ...ance inspection and other work If the power supply is cut off with the power switch left ON air conditioners will automatically start operating when the power supply is turned on 7 Do not set any item...

Page 35: ...ht The setting position No is set to 01 at the factory In the Case of FHY and FAY In the Case of FUY In the Case of FHYC 35 to 71 class Mode No First Code No Second Code No Setting 11 21 0 01 Pair 1 0...

Page 36: ...t If using together with a wired remote controller you have to change the main sub setting or the receiver Setting The Receiver Through the small opening on the back of the receiver set the wireless a...

Page 37: ...or at least 4 seconds to get the FIELD SET MODE Indicated in the display area in the figure at right 2 Press the button and select a multiple setting A b Each time the button is pressed the display sw...

Page 38: ...y settings not listed in the table 2 For group control with a wireless remote controller initial settings for all the indoor units of the group are equal For group control refer to the installation ma...

Page 39: ...ling 1 indoor unit with 2 remote controllers When using 2 remote controllers one of either the control panel or the separate remote controller must be set to MAIN and the other to SUB MAIN SUB CHANGEO...

Page 40: ...t the mode No to 00 3 Push the inspection test button to inspect the group No display 4 Using the programming time button set the group No for each group Group No rises in the order of 1 00 1 01 1 15...

Page 41: ...Settings Concerning Maintenance Si 71A 30 Explanation of Field Set 2 Settings Concerning Maintenance 2 1 Indoor Unit PCB FHC35K FHC60KVE KV1C...

Page 42: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 31 FHYC35 FHYC125KVE V1C...

Page 43: ...Settings Concerning Maintenance Si 71A 32 Explanation of Field Set FHB35 FHB60FJV1 FV1...

Page 44: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 33 FHYB35 FHYB71F...

Page 45: ...Settings Concerning Maintenance Si 71A 34 Explanation of Field Set FHK35 FHK60FJV1 FV1...

Page 46: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 35 FHYK35 FHYK71FJV1 FV1...

Page 47: ...Settings Concerning Maintenance Si 71A 36 Explanation of Field Set FAY71 FAY100FVE...

Page 48: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 37 FAY71 FAY100FAVE...

Page 49: ...Settings Concerning Maintenance Si 71A 38 Explanation of Field Set FVY L...

Page 50: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 39 FUY71 FUY125FJ...

Page 51: ...Settings Concerning Maintenance Si 71A 40 Explanation of Field Set 2 2 Outdoor Unit Switches Setting Jumper RY100 RY125K...

Page 52: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 41 RY140K...

Page 53: ...w pressure switch activates close the gas pipe stop valve 2 Forced defrost To activate the defrost operation during the heating operation press the BS button This will activate the forced defrost oper...

Page 54: ...rgency Operation If a safety device should be actuated during emergency operation all actuators are turned OFF If you reset after waiting for 3 minutes operation will start again Emergency operation c...

Page 55: ...on 7 Return to the normal operation mode Tap the inspection test operation button one time Table Operation is not reset by malfunction code reset for inspection Cannot be reset because the count is up...

Page 56: ...WLRQ XQFWLRQ 2SHUDWLRQ 1 Function Outline 46 1 1 Indoor Unit 46 1 2 Outdoor Unit 48 2 Operation Flowchart RY71 140K 49 2 1 Cooling Program Dry Operation 49 2 2 Heating 51 3 Electric Function Parts 53...

Page 57: ...ow Direction Fan Speed etc Thermostat Control Monitoring Function Cool Heat Automatic Function Program Dry Fan Operation Drain Pump Control Freeze up Protection Function Heating Overload Control Defro...

Page 58: ...unction Monitoring Function Program Dry Fan Operation Drain Pump Control FH Y K FH Y B Only Freeze up Protection Function Heating Overload Control Filter Sign Function Defrosting Cold Air Prevention F...

Page 59: ...ressure Protection 4 way Valve Control Fan Motor PS for Low Pressure Control Safety Device Defrosting Start Temperature Changeover Switch Defrosting Forced Time Changeover Switch Forced Defrosting Pum...

Page 60: ...arge thermistor disconnected See Section 5 2 7 NO Thermostat OFF Thermostat ON YES Power Switch ON Initializing of Electronic Expansion Valve See Section 5 2 4 Start Operation Using Remote Controller...

Page 61: ...mote controller See Section 5 2 2 Tr Indoor unit suction temperature Remote controller preset temperature 0 NO NO NO NO NO Gas Shortage Error Indication Thermostat OFF See Section 5 2 2 Error Indicati...

Page 62: ...ion 5 2 4 Four Way Valve Control See Section 5 2 1 Startup Control See Section 5 2 16 Start Operation Using Remote Controller Heating NO Is safety device in normal condition Is thermistor in normal co...

Page 63: ...on 5 2 8 Operation stop using remote controller See Section 5 2 2 Tr Indoor unit suction temperature Remote controller preset temperature 0 NO NO NO NO NO Gas Shortage Error Indication Error Indicatio...

Page 64: ...C9521 Fan Motor Temperature Protector 120 C BP NRTW 4P 20W BP NRTW 4P 25W BP NRTW 4P 45W Fan Motor Capacitor 2 F 2 5 F Swing Flap Motor with Limit Switch MT8 L 3PA07312 1 Float Switch FS 0406C Drain P...

Page 65: ...1 5 F Swing Flap Motor with Limit Switch MT8 3SB40350 1 Capacity 71 100 125 Remarks Control Panel BRC1B61 EC9505 Electronic Control Unit EC9517 Fan Motor Temperature Protector 120 C Upper V1 AP NOT 6...

Page 66: ...ional Accessory Wireless Remote Controller HEAT PUMP USE BRC7C528W COOLING ONLY USE BRC7C529W Optional Accessory Electronic Control Unit EC98107 Fan Motor Temperature Protector 130 C D16P45R23 6P 45W...

Page 67: ...TRA1 HOE 26F TRA1 HOE 20F TRA1 F1C Overcurrent Relay 7 5A 22A 10A 13A M1F Outdoor Unit Fan Upper 70W 90W 95W M2F Outdoor Unit Fan Lower 65W Q1L Q2L Outdoor Unit Fan Motor Safety Thermostat OFF 135 5 C...

Page 68: ...28A M1F Outdoor Unit Fan Upper 100W M2F Outdoor Unit Fan Lower 65W Q1L Q2L Outdoor Unit Fan Motor Safety Thermostat OFF 135 5 C ON Below 120 C C1R Capacitor for M1F 6 F C2R Capacitor for M2F 6 F A1P...

Page 69: ...y 7 5A 22A 10A 33A M1F Outdoor Unit Fan Upper 70W 90W M2F Outdoor Unit Fan Lower 65W Q1L Q2L Outdoor Unit Fan Motor Safety Thermostat OFF 135 5 C ON Below 120 C C1R Capacitor for M1F 6 F C2R Capacitor...

Page 70: ...E 20F TRA1 HOE 35F TRA1 F1C Overcurrent Relay 13A 15A 28A M1F Outdoor Unit Fan Upper 95W 100W M2F Outdoor Unit Fan Lower 65W Q1L Q2L Outdoor Unit Fan Motor Safety Thermostat OFF 135 5 C ON Below 120 C...

Page 71: ...door Unit Fan Upper 75W 85W M2F Outdoor Unit Fan Lower 80W Q1L Q2L Outdoor Unit Fan Motor Safety Thermostat OFF 135 5 C ON Below 120 C C1R Capacitor for M1F 6 F C2R Capacitor for M2F 6 F A1P Outdoor U...

Page 72: ...6 8 4 0 81 7 782 7 2 0 73 5 707 6 0 0 66 3 640 4 2 0 59 8 579 9 4 0 54 1 525 6 6 0 48 9 477 0 8 0 44 3 433 4 10 0 40 2 394 2 12 0 36 5 358 9 14 0 33 2 327 1 16 0 30 2 298 5 18 0 27 5 272 6 20 0 25 1 2...

Page 73: ...it Thermostat Control Existing cooling heating preset temperature range has been changed Draft Avoidance Control 1 Draft is circumvented by delaying transfer of the flap to the Po0 horizontal position...

Page 74: ...wer than 25 C ON conditionTc 60 C Reset conditionTc 59 C Freeze Prevention Control The thermostat turns OFF under the following temperature conditions to prevent freezing of the indoor unit heat excha...

Page 75: ...al Horizontal Setting Set Position Hot Start from Thermostat OFF Cold Air Prevention In Swing Operation LL Horizontal Horizontal Swing Swing In Airflow Direction Setting LL Horizontal Horizontal Setti...

Page 76: ...at Control Basic thermostat ON OFF operations Thermostat turns ON when Tr is 1 C Thermostat turns OFF when Tr is 0 C Initial operation 2 5 min Defrosting Forced operation Room temperature control prev...

Page 77: ...ion is determined 6 times or wet operation protection control is determined operation stops due to abnormal discharge pipe temperature Wet Operation Protection Control Cooling Discharge pipe temperatu...

Page 78: ...he high pressure and a drop in the low pressure Units operate with the starting air flow volume for up to 3 minutes Outdoor Unit Fan Tap 5 2 12 High Pressure Protection Control in Cooling Operation Th...

Page 79: ...of the indoor unit heat exchanger The motorized valve is controlled to maintain the indoor heat exchanger temperature Te above 0 C The outdoor unit fan speed is reduced to prevent freeze prevention co...

Page 80: ...ve is ON When the solenoid valve turns OFF at T2 95 C the motorized valve remains fully open for 2 minutes 5 2 15 Low Outside Temperature Control in Cooling Operation Year round Cooling The air flow v...

Page 81: ...starting air flow volume for up to 5 minutes When the outside air temperature is 10 C or lower the air flow volume stays at H for the first 5 seconds if it is switched from OFF to L Outdoor unit fan...

Page 82: ...he Case of R Y 5 2 18 Outdoor Unit Fan Control Heating Overload Frosting Prevention Control The air flow volume of an outdoor unit fan is varied in either one of the following two patterns according t...

Page 83: ...perature 5 C Outdoor unit heat exchange temperature 3 C Condition 2 The compressor has been running for a total of 3 hours or more since the start of heating or since completion of previous defrosting...

Page 84: ...valve Operated at best initial opening and opening speed according to operating conditions at the start of defrosting 6 Defrosting completion for outdoor unit fan Operated at best fan tap according t...

Page 85: ...rt after defrosting operation Fan Stop After defrost completion OR 40 sec after defrost completion 20 sec after defrost completion in case ambient temp 9 C and indoor suction air temp 24 C Before heat...

Page 86: ...te Controller 94 4 4 Remote Controller Display Malfunction Code and Contents 96 5 Procedure of Self Diagnosis by LED 97 5 1 Troubleshooting by LED on The Indoor Unit s 97 5 2 Troubleshooting by LED on...

Page 87: ...tion of Transmission Between Indoor and Outdoor Unit 119 6 22 Malfunction of Transmission Between Indoor Unit and Remote Controller 121 6 23 Transmission Error Between Main Remote Controller and Sub R...

Page 88: ...k on operation restarts automatically by the auto restart function Please exercise the proper caution HighPressure Mpa Low Pressure Mpa Discharge Pipe Temperature C Suction Temperature C Indoor Unit S...

Page 89: ...ort Circuit of Indoor Unit Inlet Outlet Air Lower Lower Lower Outdoor Unit Fin Fouling Higher Higher Higher Short Circuit of Outdoor Unit Inlet Outlet Air Higher Higher Higher Air Mixed in Refrigerant...

Page 90: ...71A Maintenance Inspections Troubleshooting 79 Refrigerant Saturation Curve Temperature C Gauge Pressure 0 0 5 1 0 1 5 2 0 0 5 1 10 2 15 3 20 4 40 20 0 20 40 60 80 100 120 140 kg cm2 MPa R 2 2 SG001 R...

Page 91: ...pped with liquid crystal remote controllers only Operation is normal Temperature differential is 8 18 C The units runs but doesn t heat the room Measure the suction discharge temperature Is there some...

Page 92: ...during heating even if remote controller is set to Low It is normal It is caused by the activation of the overload control airflow shift control 15 Flap automatically moves during cooling It is normal...

Page 93: ...Normal Equipment starts operation 3 minutes later 3 min standby Diagnose based on error code on remote controller Normal Equipment starts operation 3 minutes later 3 min standby Diagnose based on err...

Page 94: ...mperature setting using remote controller 1 Cooling Lowest setting 2 Heating Highest setting Possibly faulty electric components Normal Diagnose based on error code on remote controller Equipment cann...

Page 95: ...item in airflow of indoor unit Malfunction of indoor unit fan Troubleshooting Diagnose based on the error code on remote controller Malfunction of fan motor Check the magnetic switch and aux switch f...

Page 96: ...tion of refrigerant Troubleshooting Normal Unit is in 3 min standby mode Contact power company Check compressor Replace power cable Expansion valve malfunction Four way valve malfunction Check compres...

Page 97: ...e air temp Possible causes as follows Incorrect selection of model Affection of direct sun Clogged air filter Soiled heat exchanger Malfunction of fan motor Possible causes as follows Refrigerant over...

Page 98: ...e Suction air temp Discharge air temp Wait for a while No abnormality No abnormality Additional unit installation should be considered After vacuum drying charge correct amount of refrigerant Check ea...

Page 99: ...source of oil mist or dust Cleaning of air filter Check fan motor Normal Fog is generated due to defrosting operation Is white fog coming out from the unit Is the heat exchanger of indoor unit soiled...

Page 100: ...ning device Correct piping manually or attach a dead weight to pipe Normal Creak generates by shrinkage of resin parts due to temperature change Normal After vacuum drying charge correct amount of ref...

Page 101: ...e Carpet spread room Animal s hair Troubleshooting Dust collected inside the indoor unit are blown out Cleaning for inside of indoor unit is necessary Dust collected inside the indoor unit are blown o...

Page 102: ...Condition Possible Cause Troubleshooting The unit is checking to confirm that remote controller is normal Indication appears for short time Turn the switch to Ordinary and reset power supply Check th...

Page 103: ...inspection mode malfunction contents can be cleared by continuing to press the ON OFF button for 5 seconds Let you know completion timing by blinking To carry out a test run follow the procedure belo...

Page 104: ...e to malfunction the remote controller s operation LED blinks and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when the inspection mode is ent...

Page 105: ...ps 3 and 4 Continue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the malfunction code is confirmed Continuous beep No abnormality 3 Press the MODE selector bu...

Page 106: ...Si 71A Procedure of Self Diagnosis by Remote Controller Troubleshooting 95...

Page 107: ...essure switch outdoor unit H4 Failure of low pressure switch outdoor unit H9 Malfunction of outdoor air temperature sensor system outdoor unit Note 1 H9 Malfunction of outdoor air temperature sensor s...

Page 108: ...data is displayed on the malfunction detection monitor After inspecting turn off the power supply once 4 Switch 2 of the 3 power supply cables and recheck General Precautions When Performing Maintena...

Page 109: ...oting 6 Troubleshooting by Remote Controller Display LED Display 6 1 Explanation for Symbols Blinks On Off No connection with troubleshooting High probability of malfunction Possibility of malfunction...

Page 110: ...ting 105 7 7 7 7 Malfunction of heat exchanger temperature sensor system 106 Malfunction of suction air temperature sensor system 107 OutdoorUnit Malfunctions Outdoor Unit LED Display Remote Controlle...

Page 111: ...1P 1 H2P 2 H3P Other than PC Board PC Board Outdoor Unit Indoor Unit Remote Controller 83 83 83 83 Short of gas malfunction 117 84 84 84 84 Reverse phase 118 87 87 87 87 Malfunction of transmission be...

Page 112: ...unction Detection Check data from E PROM Malfunction Decision Conditions When data could not be correctly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when...

Page 113: ...lly high Does the drain pump turn after restarting operation Is a drain pump connected to the indoor unit PC board Is there continuity YES YES YES Is the short circuit connector connected to X15A on t...

Page 114: ...ion Decision Conditions When number of turns can t be detected even when output voltage to the fan is maximum Supposed Causes Failure of indoor unit fan motor Broken or disconnected wire Failure of co...

Page 115: ...connection Failure of indoor unit PC board Troubleshooting Disconnect X14A turn the power supply off once and back on and check if the limit switch has continuity when the power supply is turned back...

Page 116: ...C board Troubleshooting Note Capacity is factory set in the data IC on the PC board A capacity setting adaptor that matches the capacity of the unit is required in the following case If the indoor PC...

Page 117: ...e while referring to the thermistor temperature and resistance conversion table Thermistor temperature and resistance conversion table Disconnect the heat exchange sensor R2T from X18A on the indoor u...

Page 118: ...rring to the thermistor temperature and resistance conversion table Thermistor temperature and resistance conversion table Disconnect the suction air temperature sensor R1T from X19A on the indoor uni...

Page 119: ...vice which is not energized Is the safety device s lead wire correctly connected to the outdoor unit PC board YES NO Temperature of compressor discharge pipe is abnormally high Is the fan turning corr...

Page 120: ...sure switch s harness is broken or disconnected Failure of high pressure switch s connector connection Failure of outdoor unit PC board Causes related to product as a whole Malfunction of refrigerant...

Page 121: ...to PC boaed Failure of low pressure switch Low pressure switch s harness is broken or disconnected Failure of low pressure switch s connector connection Failure of outdoor unit PC board Causes related...

Page 122: ...ion is determined by the following condition Coil current open circuit normal short circuit Supposed Causes Failure of electronic expansion valve Electronic expansion valve s harness is broken or disc...

Page 123: ...gh When discharge pipe temperature rises suddenly When the discharge pipe sensor comes out of its installed position Supposed Causes Improper amount of refrigerant Refrigerant piping circuit clogging...

Page 124: ...When the compressor is off and the high pressure switch doesn t have continuity Supposed Causes Failure of high pressure switch High pressure switch s harness is broken or disconnected Failure of high...

Page 125: ...able Thermistor temperature and resistance conversion table Disconnect the outdoor temperature sensor R1T from X4A on the outdoor unit PC board and measure the resistance Is the thermistor normal See...

Page 126: ...ermistor temperature and resistance conversion table Thermistor temperature and resistance conversion table Disconnect the discharge pipe temperature sensor R3T from X6A on the outdoor unit PC board a...

Page 127: ...able Thermistor temperature and resistance conversion table Disconnect the heat exchanger temperature sensor R2T from X5A on the outdoor unit PC board and measure the resistance Is the thermistor norm...

Page 128: ...to discharge pipe temperature Malfunction Decision Conditions Microcomputer decides whether there is a lack of gas and detects malfunction Stop due to malfunction does not occur even though a malfunc...

Page 129: ...Reverse phase detection circuit detects the phase of each phase and determines whether it is normal or reverse phase Supposed Causes Failure of power supply wiring connection Power supply wiring is br...

Page 130: ...leshooting 1 Diagnosis of incorrect or broken disconnected wiring If the LEDs on the indoor unit PC board are off it indicates that the transmission wiring between indoor and outdoor units may be inco...

Page 131: ...ON or OFF NO OFF NO Is H1P blinking YES NO Is H1P blinking Continued from previous page Is H1P on Check of outdoor unit microcom puter normal H1P YES Turn the power supply off once and then back on R...

Page 132: ...ise etc Connection of 2 master remote controllers When using 2 remote controllers Troubleshooting Set one of the remote controllers to sub turn off the power supply temporarily then restart operation...

Page 133: ...l transmission does not continue for specified period Supposed Causes Transmission error between Main remote controller and Sub remote controller Connection among Sub remote controllers Faulty remote...

Page 134: ...r jumper correctly connected Is the indoor indoor and indoor outdoor jumper correctly connected NO NO NO NO Is the outdoor unit using for Twin system Is the remote controller connected to more than on...

Page 135: ...Troubleshooting by Remote Controller Display LED Display Si 71A 124 Troubleshooting...

Page 136: ...tor 146 2 5 Removal of Fan Bearing 148 2 6 Removal of Bottom Panel and Drain Pan 149 2 7 Removal of Swing Motor 152 3 For FUY71 100 125FJ 153 3 1 Removal of Air Filter 153 3 2 Removal of Suction Grill...

Page 137: ...l of External Casing 180 6 2 Removal of Outdoor Unit Fan and Fan Motor 181 6 3 Removal of Outdoor Unit PC Board 183 6 4 Removal of Electrical Parts Box 184 6 5 Removal of Electronic Expansion Valve an...

Page 138: ...Step Procedure Points 1 Removing the cover from the control PCB side 1 Loosen the 1 screw and pull the cover toward the inside and pull it down 2 Removing the cover from the connection wire side Cauti...

Page 139: ...r supplies before disassembling work Step Procedure Points 1 Removing the switch box 1 Remove the 5 screws and pull the switch box down 2 Removing the fan 1 Remove the resin nut and rotation stopper f...

Page 140: ...rning Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 Push the two buttons simultaneously and pull the suction grille down slowly When closing push up the gril...

Page 141: ...val procedure of suction grille 2 Disengage the hooks of the air filter by pulling the filter downward at an angle and remove the filter Installation of the air filter 2 1 Hook the air filter to the p...

Page 142: ...the inside part suction grille side down 2 Disengage the strap fall prevention strap of the corner decoration cover from the pin 3 There are four corner decoration covers They can be removed by follo...

Page 143: ...before disassembling work Step Procedure Points 1 Loosen the 4 retaining screws from the decoration panel Structure of mounting fixture 2 The decoration panel is attached with 4 mounting fixtures 3 R...

Page 144: ...s 1 Locate 9 screws on the decoration panel under the seal materials Remove seal materials in the following sequence d f c e Number of screws No of screws Seal material c 7 pcs Seal material d 9 pcs S...

Page 145: ...ng sides and open the covers Reassembly Check to make sure the heat insulation is installed in the air outlet section as shown below Improper heat insulation installation results in condensation of wa...

Page 146: ...ies before disassembling work Step Procedure Points 1 Remove the decoration cover located immediately below the cooling pipe Only the decoration cover needs to be removed to take out the swing motor 2...

Page 147: ...g swing motor installation 1 After installing the swing motor be sure to turn on the power switch for reset for initializing the vane positions 2 Be sure to engage the gears on the motor side and pane...

Page 148: ...ure Points 1 Removing the cover from the control PCB side 1 Loosen the 1 screw and pull the cover toward the inside and pull it down 2 Removing the cover from the connection wire side Caution Caution...

Page 149: ...er supplies before disassembling work Step Procedure Points 1 Removing the switch box 1 Remove the 5 screws and pull the switch box down 2 Removing the fan 1 Remove the resin nut and rotation stopper...

Page 150: ...power supplies before disassembling work Step Procedure Points 1 Drain water from the drain hole 2 Remove the 5 drain pan mounting screws 3 Pull down the drain pan straight down Caution If water is i...

Page 151: ...Procedure Points 1 Removing the drain pump Caution Be sure to install the pipe clip during installation to prevent water leaks 1 Remove the drain pan 2 Remove the hose band 3 Pull out the drain hose...

Page 152: ...ontain water Make sure there is no water in the drain hose or use a container to receive water from the hose 1 Loosen the hose band using a screwdriver 2 Pull out the drain hose 3 To remove the drain...

Page 153: ...ng work Step Procedure Points 1 The air filter is mounted behind the suction grille 2 Push the 2 tabs and open the suction grilles 3 Push the air filter installation panel from 2 places in the directi...

Page 154: ...r supplies before disassembling work Step Procedure Points Remove the air filter according to the procedures for removing the air filter and suction grille 1 After removing the reinforce stay 1 instal...

Page 155: ...t hang by the 2 locations in the rear Electrical parts can now be removed 4 Disconnect the connector mounted on the PC board 5 Remove the PC board installation screw 6 Slide the PC board to the left a...

Page 156: ...g work Step Procedure Points 1 Remove the left side panel according to the procedure for removing the fan bearing 2 Remove the screw of the horizontal blade fastener 3 Slide the horizontal blade to th...

Page 157: ...or Procedure Warning Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 Push the 2 tabs of the fan housing toward the inside with your fingers and pull out the fa...

Page 158: ...ght and remove the fan rotor ass y 4 Disconnect the 2 fan motor connecting connectors 2 connectors Connector 1 handles high voltage 220 240 V so be sure to turn of the power supply before disconnectin...

Page 159: ...s before disassembling work Step Procedure Points Remove the fan rotor according to the procedures for removing the fan rotor and fan motor 1 Remove the left side panel installation screw 2 Slide the...

Page 160: ...f all power supplies before disassembling work Step Procedure Points Remove the air filter according to its removal procedure 1 Remove the right side panel installation screw 2 Slide the right side pa...

Page 161: ...d remove the bottom panel Remove the rear surface screws 2 each on the left and right and remove the center screw while supporting the bottom panel from underneath 6 Let down the rear of the bottom pa...

Page 162: ...dure 151 8 Lower the front surface of the drain pan remove the hooking part of the rear surface and remove the drain pan 1 Lower the front surface of the drain pan 2 Remove the hooking part of the rea...

Page 163: ...sassembling work Step Procedure Points Remove the right side panel according to the procedures for removing the bottom panel and drain pan 1 Disconnect the connector connected to the swing motor 2 Rem...

Page 164: ...all power supplies before disassembling work Step Procedure Points 1 Opening suction grille Push two tabs on suction grille toward the center of grille at the same time 2 Pull down suction grille Two...

Page 165: ...sure to turn off all power supplies before disassembling work Step Procedure Points 1 Unhook two drop prevention strings while supporting suction grille with hand 2 Open suction grille forward for ap...

Page 166: ...er supplies before disassembling work Step Procedure Points 1 Remove two mounting screws to dismount switch box cover 2 Remove suction air temperature thermistor attached to bell mouth 3 Bell mouth is...

Page 167: ...100 125FJ Si 71A 156 Removal Procedure 4 Remove bell mouth by sliding to piping direction 5 To dismount fan remove washer based nut using double ended wrench 6 Remove fan by pulling down Step Procedu...

Page 168: ...s 1 Removing fan motor a Disconnect connector b Remove lead wire retaining plate Caution Fan motor can be removed without removing the lead wire retaining plate However when washing the heat exchanger...

Page 169: ...er supplies before disassembling work Step Procedure Points Remove suction grille according to the Removal of air filter and that of suction grille 1 To dismount three corner sections A B and C remove...

Page 170: ...personnel If drain water remain in the pan it may drop and stain on the floor Make sure to check if no drain water remain in the pan or cover the floor with vinyl sheet before disassembling work 5 To...

Page 171: ...hose from pump Caution When reconnect drain hose with the pump secure hose at joint using clamping material such as Tielap Clamping material should be normally included in the stock items 2 Remove fou...

Page 172: ...es before disassembling work Step Procedure Points Remove suction grille according to the Removal of suction grille 1 Swing motor is located at the diagonal position of piping 2 Remove two mounting sc...

Page 173: ...val of Air Flow Control Blade Procedure Warning Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 To remove horizontal blade press down tabs located at both end...

Page 174: ...re 163 4 For FAY71F A 4 1 Removal of Air Filter Procedure Warning Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 Hold the air filter tabs with your hands and...

Page 175: ...ove the left and right side panels 1 white screw each on left and right The wiring diagram is applied to the right side panel and troubleshooting list is applied to the left side panel 2 Remove the op...

Page 176: ...e panels operation display cover and front grille according to the procedures for their removal The left and right side panels have to be taken off in order to remove the front grille 1 Remove the 1 t...

Page 177: ...ing to the procedure for removing the electrical parts box 1 Disconnect the front side wiring connector connected to the PC board 2 Disconnect the PC board from the tabs by pushing it inward Draw the...

Page 178: ...er supplies before disassembling work Step Procedure Points Remove the electrical parts box according to its removal procedure 1 Remove the horizontal blade 2 Remove the swing Louvre unit 3 screws 3 R...

Page 179: ...es before disassembling work Step Procedure Points Remove side panels and other external casing and electrical parts box according to their removal procedures Use 2 5 mm hexagon nut driver 1 Loosen th...

Page 180: ...edure Points If removing the drain pan Carry out pump down disconnect the transmission piping and wiring and remove the main unit The bottom panel is fastened to the unit installation plate by 3 screw...

Page 181: ...rocedure 3 Remove the air discharge unit 7 screws Center of air discharge section also screw fastened 4 Remove the drain pan 1 Pull left side toward yourself 2 Move the drain hose to the right until i...

Page 182: ...ocedure Points Before dismounting a heat exchanger make sure to proceed pump down refrigerant to outdoor unit and disconnect the connection pipe and wiring then remove the indoor unit 1 Dismount top p...

Page 183: ...xchanger according to its removal procedure You can also remove the auxiliary electric heater without removing the heat exchanger 1 Remove the 2 screws of the left side panel 2 Remove the fan rotor by...

Page 184: ...L 125L 5 1 Removal of Suction Grille and Air Filter Procedure Warning Be sure to turn off all power supplies before disassembling work Step Procedure Points Removing air filter 1 Pull tabs of suction...

Page 185: ...25L Si 71A 174 Removal Procedure Removing suction grille 1 Remove two fixing screws located at both left and right sides of suction grille 2 Open widely and lift suction grille to remove it Step Proce...

Page 186: ...turn off all power supplies before disassembling work Step Procedure Points 1 To remove switch box cover dismount screw A loosen screw B and slide the cover to right side Remove suction air thermisto...

Page 187: ...For FVY71L 125L Si 71A 176 Removal Procedure 4 Remove two screws to dismount front panel 5 Remove four screws to dismount remote controller Step Procedure Points...

Page 188: ...move it 2 Remove hexagon nut and turning stopper plate to disassemble fan rotor Caution When reassembling be sure to clamp wires Removing fan motor 1 Disconnect lead wire for fan motor and harness for...

Page 189: ...ne for limit switch at connector section 2 Remove four screws to dismount discharge assembly 3 Remove two screws to dismount swing motor assembly Caution Two of eight horizontal blades located at top...

Page 190: ...t connector for swing motor and one for limit switch 2 Remove heat exchanger thermistor from PCB 3 Remove three mounting screws to dismount switch box and air partition plate Removing top panel 1 Remo...

Page 191: ...turn off all power supplies before disassembling work Step Procedure Points 1 Remove the 8 top plate screws 2 Remove the screw of the front piping cover 3 Remove the screw of the front casing and remo...

Page 192: ...xternal casing 1 Remove the 4 screws and disconnect the 8 tabs fastening the air discharge grille on the top bottom and left right and remove the air discharge grille 2 Remove the fan clamp fastening...

Page 193: ...RY100 to 140K Caution during motor installation Be sure to secure the motor lead wire with the clamp Loose lead wire can be caught by fan and damaged 5 Remove the 4 hexagon bolts fastening the fan mot...

Page 194: ...before disassembling work Step Procedure Points Remove the top plate front casing and side casing according the procedure for removing the external casing etc 1 Disconnect the connectors from the PC b...

Page 195: ...casing and side casing according the procedure for removing the external casing etc In case of cooling only model In the case of heat pump units If the lead wire is clamped by the piping etc remove t...

Page 196: ...m the PC board Note If not dismounting the rear side casing remove the 2 screws of the electrical parts box 3 Remove the electrical parts box installation screw 4 Remove the electrical parts box by pu...

Page 197: ...mpty 1 Remove the electronic expansion valve cover 2 The motor operated valve is removed by pulling while turning the electronic expansion valve coil s lever 3 Use a metal plate or protective sheet fo...

Page 198: ...arts according to their removal procedures 2 Remove the 4 way valve 3 Heart the brazed parts of the 4 way valve and remove the assembly from the piping side by drawing out with a pair of pliers etc No...

Page 199: ...ork Step Procedure Points Remove the external casing etc according to its removal procedure 1 Remove the compressor sound proofing 2 Disconnect the compressor lead wire from the compressor terminal Re...

Page 200: ...cedure 189 4 Disconnect the crank case heater s spring and remove the heater 5 Remove the compressor s 3 washer based nuts Use a T type box spanner 6 Lift the compressor slightly and draw out toward y...

Page 201: ...For R Y 71K Si 71A 190 Removal Procedure...

Page 202: ...3DUW 3DUW 3DUW 3DUW SSHQGL SSHQGL SSHQGL SSHQGL 1 Piping Diagrams 192 1 1 Piping Diagrams 192 2 Wiring Diagram 203 2 1 Indoor Unit 203 2 2 Outdoor Units 50Hz 216 2 3 Outdoor Units 60Hz 220 2 4 Outdoor...

Page 203: ...grams Si 71A 192 Appendix 1 Piping Diagrams 1 1 Piping Diagrams FHC35K FHK35K FHB35K FH35F R35G FHC50K FHK50K FHB50K FH45F R50G FHC60K FHK60K FHB60K FH60F R60G FHYC71K FHK71F FHYB71F FH71F FAY71F A FV...

Page 204: ...Si 71A Piping Diagrams Appendix 193 FHYC100K FHYB100K FH100K FAY100K FVY100F R100K FHYC125K FHYB125K FH125K FVY125F R125K FUY71FJ R71K DU427 6109A...

Page 205: ...Piping Diagrams Si 71A 194 Appendix FUY100FJ R100K FUY125FJ R125K R71K R100K R125K Twin System DU428 6141A 3D018539...

Page 206: ...Si 71A Piping Diagrams Appendix 195 R140KY1 Twin System R140KTAL Twin System 3D000191 3D000222...

Page 207: ...Piping Diagrams Si 71A 196 Appendix R140KY1 Triple System R140KTAL Triple System 3D000192 3D000224...

Page 208: ...Si 71A Piping Diagrams Appendix 197 FHYC35K FHYK35FJ FHYB35F FHY35F RY35FV1A FHYC50K FHYK45FJ FHYB45F FHY45F RY50GV1A...

Page 209: ...Piping Diagrams Si 71A 198 Appendix FHYC60K FHYK60FJ FHYB60F FHY60F RY60GV1A FHYC71K FHYK71FJ FHYB71F FHY71F FAY71F FVY71F RY71K DU427 6108B...

Page 210: ...Si 71A Piping Diagrams Appendix 199 FHYC100 FHYC125K FHYB100F FHYB125F FHY100F FHY125F FAY100F FVY100F FVY125F RY100K RY125K FUY71FJ RY71K DU428 6140 DU427 6108B...

Page 211: ...Piping Diagrams Si 71A 200 Appendix FUY100FJ RY100K FUY125FJ RY125K RY71K RY100K RY125K Twin System DU428 6140 3D018540...

Page 212: ...Si 71A Piping Diagrams Appendix 201 RY140KY1 Twin System RY140KTAL Twin System 3D000187 3D000216...

Page 213: ...Piping Diagrams Si 71A 202 Appendix RY140KY1 Triple System RY140KTAL Triple System 3D000188 3D000217...

Page 214: ...Si 71A Wiring Diagram Appendix 203 2 Wiring Diagram 2 1 Indoor Unit FHC35KVE FHC50KVE FHC60KVE...

Page 215: ...Wiring Diagram Si 71A 204 Appendix FHK35FV1 FHK71FV1 DU427 5405...

Page 216: ...Si 71A Wiring Diagram Appendix 205 FHB35FV1 FHB60FV1 DU423 5175A...

Page 217: ...Wiring Diagram Si 71A 206 Appendix FH35FVE FH125FVE DU423 5172B...

Page 218: ...ERVICE MONITOR RED LIGHT EMISSIONV DIODE 2 GRN HBP SELECTOR SWITCH LIGHT EMISSION DIODE TERMINAL STRIP SERVICE MONITOR ORANGE H1P X2M R1T H2P SLAVE X2M H2P A2P RyP MAGNETIC RELAY 3 TERMINAL STRIP M3P...

Page 219: ...Wiring Diagram Si 71A 208 Appendix FHYK35FJV1 FHYK70FJV1 DU423 5174...

Page 220: ...Si 71A Wiring Diagram Appendix 209 FHYB35FV1 FHYB71FV1 DU423 5173A...

Page 221: ...Wiring Diagram Si 71A 210 Appendix FHYB100FV1 FHYB125FV1 DU428 5353A...

Page 222: ...Si 71A Wiring Diagram Appendix 211 FHY35FVE FHY125FVE DU423 5172B...

Page 223: ...Wiring Diagram Si 71A 212 Appendix FAY71F A VE FAY100F A VE DU427 5410D...

Page 224: ...Si 71A Wiring Diagram Appendix 213 FVY71FV1 FVY125FV1 DU427 5403...

Page 225: ...Wiring Diagram Si 71A 214 Appendix FUY71FJV1 FUY100FJV1 FUY125FJV1 3D013404A...

Page 226: ...Si 71A Wiring Diagram Appendix 215 FVY71LVE FVY100LVE FVY125LVE 3D013540A...

Page 227: ...Wiring Diagram Si 71A 216 Appendix 2 2 Outdoor Units 50Hz R35GV1 R50GV1 DW523 555 1A...

Page 228: ...Si 71A Wiring Diagram Appendix 217 R60GV1 R71KV1 DU427 5399C...

Page 229: ...Wiring Diagram Si 71A 218 Appendix R100KV1 R71KY1 DU428 5349E DU427 5401B...

Page 230: ...Si 71A Wiring Diagram Appendix 219 R100KY1 R125KY1 R140KY1 DU428 5351D...

Page 231: ...Wiring Diagram Si 71A 220 Appendix 2 3 Outdoor Units 60Hz R50GVAL R60GVAL 3D005750...

Page 232: ...Si 71A Wiring Diagram Appendix 221 R71KVAL R100KVAL 3D014723A 3D014724A...

Page 233: ...MONITOR RED THERMO SWITCH M1F M2F THERMISTOR AIR THERMISTOR COIL THERMISTOR DISCHARGE PIPE MAGNETIC RELAY K1M MAGNETIC RELAY M1F M2F SELECTOR SWITCH EMERGENCY SD TC TERMINAL STRIP SIGNAL RECEIVER CIRC...

Page 234: ...Si 71A Wiring Diagram Appendix 223 2 4 Outdoor Unit HeaT Pump RY35FV1A RY50GV1A 3D001431A 3D000794...

Page 235: ...Wiring Diagram Si 71A 224 Appendix RY60GV1A RY71KV1...

Page 236: ...Si 71A Wiring Diagram Appendix 225 RY71KY1 RY100KY1 RY125KY1 DU427 5397B DU428 5347D...

Page 237: ...Wiring Diagram Si 71A 226 Appendix RY140KY1 RY140KTAL 3D000102A 3D000104A...

Page 238: ...ol 66 Emergency Operation 43 66 Emergency Operation of Indoor Units 43 Emergency Operation of Outdoor Units 43 Existence of DTP Switch Jumper and BS 42 F3 112 Failure of Capacity Setting 105 Failure o...

Page 239: ...Tap 67 Outdoor Unit Identification Function 63 3 Present Model s Functions 4 Procedure of Self Diagnosis by LED 97 Procedure of Self Diagnosis by Remote Controller 92 5 Refrigerant Saturation Curve 7...

Page 240: ...ng Heating Operation Starts but Stops Immediately 84 Equipment Discharges Dust 90 Equipment Discharges White Mist 88 Equipment does not Operate 82 Equipment Operates but does not Provide Cooling 86 Eq...

Page 241: ...Si 71A iv Index...

Page 242: ...ration 70 High Pressure System HPS Malfunction 109 How to Handle Request for Maintenance 80 Indoor Unit Fan Motor Lock 103 Lack of Gas Malfunction 117 Low Pressure System LPS Malfunction 110 0 MAIN SU...

Page 243: ...ion Display Cover and Front Grille 164 Removal of Suction Grille 129 154 Removal of Suction Grille and Air Filter 173 Removal of Swing Louvre Unit 167 Removal of Swing Motor 135 152 161 178 Removal of...

Page 244: ...8323 Japan Toky o office Shinjuku Sumitomo Bldg 6 1 Nishi Shinjuku 2 chome Shinjuku ku Tokyo 163 0235 Japan Zandvoordestr aat 300 B 8400 Oostende Belgium l For further improvement specifications or de...

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Daikin Skyair RY71K, Service Manual

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