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GD Midea Refrigeration Equipment Co. Ltd 

 

MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS   

 

 

 

 

 

 

Technical service manual 2005 

 

R407C multi Series 

 

 

Indoor Models   

[A SERIES]                                        [B SERIES]

 

EL-KFR26G/TN2Y-A          EL-KFR26G/TN2Y-B 

EL-KFR36G/TN2Y-A          EL-KFR36G/TN2Y-B 

Outdoor Models     

M2OA-18HRN2  M2OA-21HRN2 

M3OA-27HRN2  M3OA-30HRN2 

 

 

 

 

Multi SERIES 

Summary of Contents for A Series

Page 1: ...PLIT TYPE HEAT PUMP AIR CONDITIONERS Technical service manual 2005 R407C multi Series Indoor Models A SERIES B SERIES EL KFR26G TN2Y A EL KFR26G TN2Y B EL KFR36G TN2Y A EL KFR36G TN2Y B Outdoor Models M2OA 18HRN2 M2OA 21HRN2 M3OA 27HRN2 M3OA 30HRN2 Multi SERIES ...

Page 2: ... of 33 1 Features 2 Specification 3 Dimensions 4 Refrigeration cycle diagram 5 Operation limits 6 Wiring diagram 7 Troubleshooting 8 Electronic function 9 Exploded view parts 10 Characteristic of temp sensor ...

Page 3: ...Page 3 of 33 1 Features 1 1Compact design 1 2High efficiency and quiet operation 1 3Unitary outdoor unit design ...

Page 4: ...liC aluminium e Tube outside dia and type mm φ7 INNEGROOVE TUBE φ7 innergroove tube f Coil length x height x width mm 578X252X26 74 635 315 27 34 Indoor coil g Number of circuits 2 2 Indoor air flow Hi Mi Lo m3 h 500 460 410 680 520 420 Indoor noise level Hi Mi Lo dB A 40 5 37 4 34 6 42 0 35 0 30 0 Dimension W H D mm 750 250 214 210 815x282x217 Packing W H D mm 837X340X295 915x360x295 Indoor unit ...

Page 5: ...30 40 30 40 30 Model PG180X1C 4DZ3X2 PG180X1C 4DZ3 P G225X2C 4FT PG295X2CS 4KU1 PG225X2C 4FT PG295X2CS 4KU1 PG225X2C 4FT Type ROTARY Rotary Rotary Rotary Brand GD TOSHIBA GD TOSHIBA GD Toshiba GD Toshiba Capacity Btu h 10800X2 10800 13650 18080 13650 18080 13650 Input W 1000X2 1000 1310 1760 1310 1760 1310 Rated current RLA A 4 4X2 4 4 6 1 8 5 6 1 8 5 6 1 Locked rotor Amp LRA A 24X2 24 31 44 31 44...

Page 6: ... 983X915X425 983X915X425 Outdoor unit Net Gross weight Kg 73 77 60 65 90 94 90 94 Refrigerant type g R407C 800X2 R407C 750 1000 R407C 1470 820 R407C 1470 820 Design pressure Hi Lo MPa 2 8 1 2 2 8 1 2 2 6 2 6 Liquid side Gas side mm in ch Ф6 35 Ф9 53 Ф6 35 Ф9 53 Ф 6 35 Ф12 7 Ф6 35 Ф9 53 Ф 6 35 Ф12 7 Ф6 35 Ф9 53 Max refrigerant pipe length m 10 10 10 each unit 10 each unit Refriger ant piping Max di...

Page 7: ...Page 7 of 33 3 Dimensions 3 1 Indoor unit A B C D B C Panel A Panel B A B C EL KFR26G TN2Y A B 214 750 250 EL KFR36G TN2Y A B 217 815 282 ...

Page 8: ...Page 8 of 33 3 2 Outdoor unit Outdoor unit 18K 21K Outdoor unit 27K 30K ...

Page 9: ...PMV2 Electronic expansive valve T1 T2 Indoor pipe temperature sensor Condenser Four way valve Evaporator Compressor 1 drive 1 system Notice For 1 drives 2 system there are two individual refrigerant circuit and two compressors but for the 1drive 2 system in the 1 drive three system there is only one refrigerant circuit and only one compressor PMV2 SV2 SV1 2 1 T2 T1 refrigeration distributor Compre...

Page 10: ...r temperature Condition However excludes the initial pull down stage 2 The operation range below the dashed is the result added the low ambient kit 5 2Heating operation Indoor air temp DB 30 25 20 15 10 5 5 5 15 25 Outdoor unit air temp DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage COOLING ...

Page 11: ...Page 11 of 33 6 Wiring diagram Indoor unit A B indoor unit ...

Page 12: ...Page 12 of 33 Outdoor unit For 1 drive 2 outdoor unit ...

Page 13: ...Page 13 of 33 For 1 drive 3 outdoor unit ...

Page 14: ...zero signal r Extinguish Flash at 5Hz Failure phenomenon Operation lamp Timer lamp Indoor fan speed has been out of control for over 1 minute X Failure phenomenon Operation lamp Timer lamp Indoor room temp or evaporator sensor is open circuit or short circuit On Is connector connection good Is voltage being applied to the fan motor Fan motor is defective Repair the connector Indoor PCB is defectiv...

Page 15: ...zero signal When such failure occurs the main control board must have fault 7 2 Outdoor unit Failure phenomenon LED1 LED2 LED3 Stand by High temp protect of condenser Temp sensor in condenser 1 is open circuit or short circuit Temp sensor in condenser 2 is open circuit or short circuit Flash at 2Hz Operation lamp off and Timer lamp flashes Indoor PCB is defective Power supply fault Outdoor unit fa...

Page 16: ...ld wind from Setting Fan Speed to Breeze temperature TE4 Anti cold wind from Breeze to Fan Off temperature TE5 Evaporator low temperature protection entering temperature TE6 Evaporator low temperature protection restoring temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature p...

Page 17: ... Off Off TA Ts On On Temp down TA Ts Off Off TA Indoor ambient temperature TS Setting temperature through the remote controller Auto fan under cooling mode Condition T Indoor Temp Setting Temp Indoor fan speed T 3 Low 3 T 5 Mid Temp up T 5 High T 3 High 1 T 3 Mid Temp down T 1 Low Anti freezing control to indoor evaporator under cooling mode Condition Temp Time Compressor Outdoor fan T TE6 On On T...

Page 18: ... of defrost 8 9 3 Action conditions of compressor under heating mode compressor must run for 7 minutes after starting and then judge temperature Meanwhile other protections are still valid Condition Compressor Outdoor fan TA Ts 3 Off Off Room temp up TA Ts 3 On On TA Ts 2 On On Room temp down TA Ts 2 Off Off TA Indoor ambient temperature TS Setting temperature through the remote controller 8 9 4 I...

Page 19: ...E7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature protection restoring temperature 8 10 Defrosting operation Available for heating only 8 10 1 Defrosting condition When T3 0 and compressor runs 40 minutes T3 Temp of condenser 8 10 2 Ending condition of defrost If one of following condi...

Page 20: ...peration whose fan mode is set as low the A C operates under the DRY mode with a set temp of 24 8 12 3 All protections of remote control cooling are available under forced cooling operation 8 13 Forced Auto function Select forced auto function with the forced auto button or the switch in the display board In forced auto status the A C operates under remote control mode with a set temp of 24 8 14 T...

Page 21: ...Page 21 of 33 8 16 Outdoor fan motor T4 Outdoor temp T4 Outdoor fan motor T4 27 High speed Cooling mode T4 25 Low speed T4 13 Low speed Heating mode T4 11 High speed ...

Page 22: ...2113010204 Panel frame type A 1 2113039176 26 Fan motor 1 2240030005 7 Panel frame type B 1 2113039197 27 Cross flow fan assy 1 2113010219 8 Display board assy 1 2333039081 28 Motor cover 1 2113010203 9 Holder for display board 1 2113039199 29 Holder for remote controller 1 2113139022 10 Air out frame assy 1 2113039177 30 Remote Controller 1 2335509179 11 Horizontal louver 1 2113039027 31 Transfor...

Page 23: ...otor 1 2240030213 7 Panel frame 1 2113159015 26 Cross flow fan assy 1 2110020008 8 Display board assy 1 2333159010 27 Motor cover 1 2113132314 9 Holder for display board 1 2113159030 28 Holder for remote controller 1 2113139022 10 Air out frame assy 1 2113159007 29 Remote Controller 1 2335509179 11 Horizontal louver 1 2113159031 30 Transformer 1 2230090029 12 Louver holder I 1 2113051554 31 Cover ...

Page 24: ...2113500006 5 Strenghten board for front clapboard 1 10718111801 2125024213 6 Strenghten board for motor holder II 1 53818121809 2125024229 7 Propeller fan 1 53818121810 2110030014 8 Condenser 1 10718121801 2155029055 9 Cover 1 10718111803 2125024204 10 Fan motor 1 53818121811 2240042009 11 Holder for fan motor 1 10718111828 2125024224 12 Outdoor temp sensor 1 10909121819 2244532622 13 Condenser te...

Page 25: ... motor capacitor 1 10718121804 2240110404 31 Wire joint 4p 1 10718121807 2230145003 32 Wire joint for multiplexer 1 10718121806 2230145017 33 Washer for wire joint 1 10112121817 2113500004 34 Clamp for wiring 1 10112121816 2121990001 35 Wire joint 6p 1 10718121805 2230145030 36 Liquid pipe valve for unit A 1 10721121803 2160071515 37 Gas pipe valve for unit A 1 10718121822 2160071007 38 Liquid pip...

Page 26: ...ront clapboard 1 10718111801 2125024213 6 Strenghten board for motor holder II 1 53818121809 2125024229 7 Propeller fan 1 53818121810 2110030014 8 Condenser 1 10721121801 2155029061 9 Cover 1 10718111803 2125024204 10 Fan motor 1 53818121811 2240042009 11 Holder for fan motor 1 10718111828 2125024224 12 Outdoor temp sensor 1 10909121819 2244532622 13 Condenser temp sensor 1 10121121816 2244050002 ...

Page 27: ...oint 4p 1 10718121807 2230145003 32 Wire joint for multiplexer 1 10718121806 2230145017 33 Washer for wire joint 1 10112121817 2113500004 34 Clamp for wiring 1 10112121816 2121990001 35 Wire joint 6p 1 10718121805 2230145030 36 Liquid pipe valve for unit A 1 10721121803 2160071515 37 Gas pipe valve for unit A 1 10721121810 2160071008 38 Liquid pipe valve for unit B 1 10721121803 2160071515 39 Gas ...

Page 28: ...2 10830121803 2115029007 4 Fan motor 2 10830121804 2240041609 5 Holder for fan motor 1 10830121805 2125029025 6 Fixing board for fan motor holder 1 10830121806 2125029006 7 Chassis 1 10830121807 2125019001 8 Condensator unit B 1 10830121808 2155019018 9 Condensator unit A 1 10830121809 2155019019 10 Cover 1 10830121810 2125029003 11 Small Handle 1 10830121811 2115029006 12 Rear net 1 10830121812 2...

Page 29: ...A 1 10830121823 2140061870 31 Electric expansive valve EEV 2 10827121801 2160130009 32 Gas pipe temp sensor 1 50224121048 2244200406 33 Relay 2 11318111004 2230080071 34 Transformer 1 10830121843 2230090044 35 Transformer 1 10718121808 2230090015 36 Main control board 1 10830121827 2135019250 37 Wire joint for multiplexer 6 10718121806 2230145017 38 Fan motor capacitor 2 10718121804 2240110404 39 ...

Page 30: ... 50Hz Outdoor Unit 7 9 10 11 13 12 20 19 23 22 18 15 14 1 3 21 24 2 4 5 6 8 16 17 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 NO Part Name Quantity Sale code BOM code 1 Front net 2 10830121801 2125029012 2 Front clapboard 1 10830121802 2125029016 3 Propeller fan 2 10830121803 2115029007 4 Fan motor 2 10830121804 2240041609 5 Holder for fan mot...

Page 31: ...097 24 Gas pipe valve unit B 1 10830121822 2160072199 25 Condenser temp sensor 2 10121121816 2244050002 26 4 way valve unit B 1 50118121804 2160060051 27 Compressor unit B 1 10721121807 2140061562 28 4 way valve R407C control unit A 1 10409121808 2160069006 29 4 way valve unit A 1 50118121804 2160060051 30 Compressor unit A 1 10830121823 2140061870 31 Electric expansive valve EEV 2 10827121801 216...

Page 32: ...re Valve Ass y 1 10827121802 2165019027 49 Low Pressure Valve Ass y 1 10827121803 2165019046 50 Low Pressure Valve Ass y 1 10830121820 2165019056 51 High Pressure Valve Ass y 1 10827121805 2165019036 52 High Pressure Valve Ass y 1 10827121806 2165019065 53 Wire for 4 valve 3 51836122805 2160060036 54 Wire Clamp 1 10112121816 2121990001 55 Wire for EEV 2 13327113806 2160130010 56 Copper nut TLM A01...

Page 33: ...10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3577 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38 5 6296 65 1 9...

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