Midea M2OC-14HRDN1 Manuel d'utilisateur

ODMI-A-1202 GD Midea Refrigeration Equipment Co.,Ltd MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS Technical service manual R410A Multi DC

4.9 M5OA-36HRDN1-Q

5. Refrigeration Cycle Diagram 5.1 Refrigeration circuit drawing of inverter binary type 4.2 Refrigeration circuit drawing of inverter trinary

5.4 Refrigeration circuit drawing of inverter quintuple type

6. Indoor units combination 6.1 Indoor unit combination for M2OC-14HRDN1-Q、M2OC-14HRDN1 One unit Two unit 7 7+7 9+9 9 7+9 9+12 12 7+12 Note: T

6.6 Indoor unit combination for M4OC1-27HRDN1-Q、M4OC-27HRDN1 One unit Two unit Three unit Four unit 7 7+7 9+9 12+12 7+7+7 7+9+12 9+9+9 7+7

7. Electronic control function 7.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Co

13 EXV open angle for 1# indoor unit Actual data/8 14 EXV open angle for 2# indoor unit Actual data/8 15 EXV open angle for 3# indoor unit Actual

27 A indoor unit evaporator outlet temp.(T2BA) If the temp. is lower than -9 degree, the digital display tube will show “-9”.If the temp. is higher

7.4.3 Capacity demand: Cooling mode Capacity 2000-2500 2000-2500 3000-3800 4500-5000 5000-5500 5500-6100 6100-7000 7000-7500 7500-8000 >7500 Cor

7.4.4Number of indoor unit Display Number of indoor unit 1 1 2 2 3 3 7.4.5 Outdoor ambient temp: Display Corresponding temp. Display Corresp

CONTENTS 1. General information of Outdoor Units ... 3 2. Features ...

7.4.6 Opening degree of electronic expansion valve: Opening degree equals the display data times 8 7.5 Protection 7.5.1 Three minutes delay at re

VOLT_RST1_ADD=210V, VOLT_LIM1_ADD=200V, VOLT_RST2_ADD=195V, VOLT_LIM2_ADD=185V. VOLT_LIM_FREQ1_ADD=54Hz, VOLT_LIM_FREQ2_ADD=42Hz. 7.5.4 Compressor c

COOL_F9 ICOOLLMT5 COOL_F8 ICOOLLMT4 COOL_F7 ICOOLLMT3 COOL_F6 ICOOLLMT2 COOL_F5 ICOOLLMT1 If the current frequency is lower than COOL_F4, the f

1. If the compressor frequency keeps lower than RECOILINFRE for Te minutes, the AC will rise the frequency to RECOILFRE for Tf se

8. Troubleshooting 8.1 Indoor unit error code explanation: Glory series NO. MALFUNCTION DEF TIMER AUTO RUN 1 Indoor EEPROM malfunction O O O O

F2 3 O Open or short circuit of T3 temperature sensor F3 4 O Open or short circuit of T5 temperature sensor F4 5 O Outdoor EEPROM malfunctio

A5 Duct series: Operation Timer De-frost Alarm LED STATUS DISPLAY DIGITAL TUBE ★ X X X Open or short circuit of T1 temperature sensor E0 X X ★ X

Outdoor unit error code explanation: For units(except M5OA-36HRDN1-Q model) Display LED STATUS E0 Outdoor EEPROM malfunction E1 No A Indoor

For M5OA-36HRDN1-Q model Display LED STATUS E0 Outdoor EEPROM malfunction E2 Indoor / outdoor units communication error E3 Communication malfunc

8.3Trouble shooting 8.3.1 For the indoor unit 8.3.1.1 Indoor EEPROM malfunction

1. General information of Outdoor Units Model name Dimension (mm) Net/Gross weight (kg) Compressor M2OC-14HRDN1 760*590*285 39/41 DA108X1C-20

8.3.1.2 Indoor / outdoor units communication error No No fist time Yes Yes No Reconnect the wiring Check wiring on the outdoor and indoor termina

Pic 1: Measure the voltage of L2 to S (Vs), is it moving alternately between positive value and negative value? PIC 2, Check the wiri

8.3.1.3 Zero-crossing signal error 8.3.1.4 Indoor fan speed has been out of control Shut off the power supply and turn it on 1 minute later.

8.3.1.5 Open or short circuit of temperature sensor. 8.3.1.6 Full-water malfunction Full-water malfunction Check whether the water-level sw

8.3.2 For the outdoor unit 8.3.2 1 Outdoor EEPROM malfunction Outdoor EEPROM malfunction Yes No Insert the EEPROM well Replace the outdoor

8.3.2.2 Voltage protection of compressor Check the power supply No Check the voltage of outdoor unit power supply, whether th

8.3.2.3 Communication malfunction between IPM board and outdoor main board No Check whether the IPM board has error

8.3.2.4 Temperature protection of compressor discharge Discharge temperature protection of compressor Check whether the compressor discharge tem

8.3.2.5 Temperature protection of compressor top Judge 2: Whether refrigerant circulation volume is normal? Whether abnormality is the

8.3.2.6 High pressure protection(For M4OC1-27HRDN1-Q, M4OC-27HRDN1-Q,M4OC-36HRDN1-Q, M5OA-36HRDN1-Q) High pressure protection Judge 1: Whethe

2. Features The hydrophilic fin can improve the heating efficiency at operation mode. It is only operated in the heating operation mode except d

8.3.2.7 Low pressure protection (For M4OC1-27HRDN1-Q, M4OC-27HRDN1-Q,M4OC-36HRDN1-Q, M5OA-36HRDN1-Q) Low pressure protection Judge 1: The w

8.3.2.8 Current protection of compressor Current protection of compressor Judge 1: Check whether the input current of the power supply wire is mo

8.3.2.9 IPM module protection IPM module protection Check whether the voltage range of P-N on IPM module is normal? DC277-356V for 14-27KBtu

8.3.2.10 High temperature protection of condenser When outdoor pipe temp. is more than 65°C, the unit will stop, and unit runs again when outdoo

8.3.2.11 PFC module protection

Appendix 1 Temperature Sensor Resistance Value Table (℃--K) ℃ K Ohm ℃ K Ohm ℃ K Ohm ℃ K Ohm -20 115.266 20 12.6431 60 2.35774 100 0.62973

Appendix 2 Unit: ℃---K Discharge temp. sensor table -20 542.7 20 68.66 60 13.59 100 3.702 -19 51

Appendix 3 1. Reference voltage data: a) Rectifier : Input :220-230V(AC), output :310V(DC) b) Inverter module: U,V, W 3ph. Result U-V 60-150

3. Dimensions More than 30cmMore than 60cmMore than 70cmMore than 30cmMore than 60cm(Service spaceFence orobstacles MODEL W D H W1 A B M2OC

4. Wiring Diagram 4.1 M2OC-14HRDN1-Q 4.2 M2OC-14HRDN1

4.3 M2OC1-18HRDN1-Q 4.4 M3OC1-21HRDN1-Q M3OC1-27HRDN1-Q M3OC-27HRDN1

4.5 M2OC-18HRDN1 4.6 M4OC-24HRDN1-Q

4.7 M4OC1-27HRDN1-Q、M4OC-27HRDN1 4.8 M4OC-36HRDN1-Q