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ODMI-1103-A

GD Midea Refrigeration Equipment Co.,Ltd

MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS

Technical service manual

R410A Multi DC inverter

220~240V-1Ph-50Hz

Outdoor units Models

M2OC-14HRDN1

M2OC-14HRDN1-Q

M2OC-18HRDN1

M2OC1-18HRDN1-Q
M3OC1-21HRDN1-Q

M3OC-27HRDN1

M3OC1-27HRDN1-Q

M4OC-24HRDN1-Q

M4OC1-27HRDN1-Q

M4OC-27HRDN1

M4OC-36HRDN1-Q
M5OA-36HRDN1-Q

Содержание M2OC-14HRDN1

Страница 1: ...IR CONDITIONERS Technical service manual R410A Multi DC inverter 220 240V 1Ph 50Hz Outdoor units Models M2OC 14HRDN1 M2OC 14HRDN1 Q M2OC 18HRDN1 M2OC1 18HRDN1 Q M3OC1 21HRDN1 Q M3OC 27HRDN1 M3OC1 27HR...

Страница 2: ...ONTENTS 1 General information of Outdoor Units 3 2 Features 4 3 Dimensions 5 4 Wiring Diagram 6 5 Refrigeration Cycle Diagram 10 6 Indoor units combination 12 7 Electronic control function 14 8 Troubl...

Страница 3: ...N1 Q 845 700 320 55 60 DA130S1C 20FZ M3OC 27HRDN1 845 700 320 59 62 C 6RZ146H1A M3OC1 27HRDN1 Q 845 700 320 57 60 5 DA150S1C 20FZ M4OC 24HRDN1 Q 845 700 320 56 60 DA150S1C 20FZ M4OC 27HRDN1 900 860 31...

Страница 4: ...he heating operation mode except defrosting operation It protects the valves and prevents water from dripping Outdoor unit Power relay control Hydrophilic aluminum fin Anti rust cabinet Valve protecti...

Страница 5: ...00 908 560 335 M2OC1 18HRDN1 Q 845 320 700 908 560 335 M3OC1 21HRDN1 Q 845 320 700 908 560 335 M3OC 27HRDN1 845 320 700 908 560 335 M3OC1 27HRDN1 Q 845 320 700 908 560 335 M4OC 24HRDN1 Q 845 320 700 9...

Страница 6: ...ODMI 1103 A 4 Wiring Diagram 4 1 M2OC 14HRDN1 Q 4 2 M2OC 14HRDN1...

Страница 7: ...ODMI 1103 A 4 3 M2OC1 18HRDN1 Q M3OC1 21HRDN1 Q 4 4 M2OC 18HRDN1 M3OC 27HRDN1...

Страница 8: ...ODMI 1103 A 4 5 M3OC1 27HRDN1 Q M4OC 24HRDN1 Q 4 6 M4OC1 27HRDN1 Q M4OC 27HRDN1...

Страница 9: ...ODMI 1103 A 4 7 M4OC 36HRDN1 4 8 M5OA 36HRDN1 Q...

Страница 10: ...A 5 Refrigeration Cycle Diagram 5 1 Refrigeration circuit drawing of inverter binary type 4 2 Refrigeration circuit drawing of inverter trinary type 5 3 Refrigeration circuit drawing of inverter quad...

Страница 11: ...ODMI 1103 A 5 4 Refrigeration circuit drawing of inverter quintuple type...

Страница 12: ...8 12 12 7 9 9 Note There should be no more than one cassette or duct or console or ceiling floor unit And the 18k indoor unit should only be wall mounted unit 6 4 Indoor unit combination for M3OC1 27H...

Страница 13: ...12 7 7 12 18 7 9 12 18 9 9 9 12 9 12 12 18 7 7 7 18 7 7 18 18 7 9 18 18 9 9 9 18 12 12 12 12 7 7 9 9 7 9 9 9 7 12 12 12 9 9 12 12 12 12 12 18 7 7 9 12 7 9 9 12 7 12 12 18 9 9 12 18 Five Unit 7 7 7 7...

Страница 14: ...e The LED displays dF or alternative displays between running frequency and dF each displays 2s In compressor pre heating The LED displays In protection or malfunction the LED displays error code or p...

Страница 15: ...The capacity unit is horse power If the indoor unit is not connected the digital display tube will show 4 B indoor unit capacity 5 C indoor unit capacity 6 D indoor unit capacity 7 E indoor unit capac...

Страница 16: ...e for A indoor unit Actual data 4 If the value is higher than 99 the digital display tube will show single digit and tens digit For example the digital display tube show 2 0 it means the EXV open angl...

Страница 17: ...5 500 5500 6 100 6100 7 000 7000 7 500 7500 8 000 7500 Correspondi ng Code 1 2 3 4 5 6 7 8 9 10 Heating mode Capacity 2000 2 500 2000 2 500 3000 3 800 4500 5 000 5500 6 100 6100 7 000 6100 7 000 7000...

Страница 18: ...86 28 22 4 56 13 87 28 5 23 3 5 57 13 5 88 29 24 3 58 14 89 29 5 26 2 59 14 5 90 30 27 1 5 60 15 91 30 5 28 1 61 15 5 92 31 29 0 5 62 16 93 31 5 30 0 63 16 5 93 31 5 31 0 5 63 16 5 94 32 32 1 64 17 9...

Страница 19: ...2 VOLLIMT3 Off VOLFRE2 VOLFRE1 VOLREL1 VOLREL2 VOLREL3 Mode VOLLIMT1 V VOLLIMT2 V VOLLIMT3 V VOLREL1 V VOLREL2 V VOLREL3 V VOLFRE1 Hz VOLFRE2 Hz M2OC 14HRDN1 220 200 80 250 210 100 62 54 M2OC 14HRDN1...

Страница 20: ...t 3 minutes later Heating mode Current frequency Hz Current limit value A Frequency limit HEAT_F12 IHEATLMT8 Decrease the frequecny to HEAT_F4 and run at HEAT_F4 for 3 minutes After that the frequency...

Страница 21: ...IHEATLMT7 HEAT_F10 IHEATLMT6 HEAT_F9 IHEATLMT5 HEAT_F8 IHEATLMT4 HEAT_F7 IHEATLMT3 HEAT_F6 IHEATLMT2 HEAT_F5 IHEATLMT1 If the current frequency is lower than HEAT_F4 the frequency will not be limited...

Страница 22: ...he current running mode 3 If the outdoor ambient is higher than 15 during the oil return the AC quit oil return 7 5 9 Compressor preheating functions Preheating permitting condition If T4 outdoor ambi...

Страница 23: ...ator temperature sensor O O O E6 7 Outdoor fan speed out of control O O E7 8 IBM malfunction or IGBT over strong current protection X X O P0 9 Over voltage or too under voltage protection X O O P1 10...

Страница 24: ...t X Outdoor current protection flash light X extinguished A5 Duct Operation Timer De frost Alarm LED STATUS DISPLAY DIGITAL TUBE X X X Indoor room temp sensor open or short circuit E0 X X X Indoor pip...

Страница 25: ...ensor or connector of sensor is defective E4 Outdoor unit temp sensor or connector of temp sensor is defective E5 Compressor voltage protection E7 Communication malfunction between outdoor main chip a...

Страница 26: ...ector of sensor is defective F2 No B Indoor unit coil outlet temp sensor or connector of sensor is defective F3 No C Indoor unit coil outlet temp sensor or connector of sensor is defective F4 No D Ind...

Страница 27: ...e connect the power supply turn on the unit with remote controller Does the unit work normally Check the wiring between indoor and outdoor unit Is the connection of L N S and GND good Is the GND conne...

Страница 28: ...ion between fan and motor check if the bearing is normal If not change the bearing If yes follow the below step Replace the indoor fan motor Yes Replace the indoor PCB No Yes Check the voltage of moto...

Страница 29: ...rs and the PCB Are the connections good Replace the sensor and check if the errors happen again Check the voltage of power supply if the voltage is about 220V turn off the power supply to indoor unit...

Страница 30: ...Communication malfunction between outdoor main chip and compressor control chip Check whether the IPM board has error display Replace the IPM board Replace the electric control box No No Yes Replace t...

Страница 31: ...good Is refrigerant circulation volume normal No No Charge refrigerant Is abnormality the same after gas charging No Check refrigerant system such as clogging of capillary etc Reconnect and retest No...

Страница 32: ...nly Does the compressor start after 3 minutes Does the trouble occur again after compressor running some time No Yes No The compressor is defective Check the refrigerant circulation volume and pressur...

Страница 33: ...the outdoor pipe temp more than 65 C Is the outdoor pipe temp sensor right according to the annex 1 Replace the outdoor main board No Yes Replace the outdoor pipe temp sensor No Replace inverter comp...

Страница 34: ...ifiers input port is normal Replace the outdoor PCB Yes Replace the PFC inductance Check whether the voltage between P and N port in IPM is 380V No Replace outdoor e box Yes Check whether the wiring b...

Страница 35: ...0 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...

Страница 36: ...V W 60 150V AC P N DC 310V c Photo couple PC817 PC851 Control side 5V AC side 24V AC d S terminal and N changeable from 0 24V 2 Check the Diode Bridge component In wiring diagram rectifier Remark If t...

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