Инструкция на Мульти сплит-системы Midea серии M2O-50D-16-42HFN1-Q. Руководство по техническому обслуживанию.

Текст инструкции

1. Стр. 1 Библиотека СОК 

2. Стр. 3 1. General information of Outdoor Units

3. Стр. 4 2. Features

   Outdoor unit Power relay control Low noise air flow system Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. Anti-rust cabinet Valve protection cover It…

4. Стр. 5 3. Specification

   Outdoor Model Power supply Cooling V-ph-Hz Double 5,28 kW W / 1480 / 1650 Rated current A / 6,5 / 7,55 / 3,24 / 3,2 Capacity kW 1,76-3,81 4,75 2,35-4,98 5,57 Input W / 1230 / 1550 Rated current A W Max. input current A / 5,4 / 7,1 / 3,87 / 3,6 2400 2950 11 14 Model ASN108D22UEZ DA130M1C-31FZ Type…

5. Стр. 6 OU higher

   than IU OU lower than IU Max. height difference between indoor units Cooling Max. height difference between indoor and outdoor unit Ambient temperature Heating m 10 10 m 15 15 m 10 10 ℃ -15-50 -15-50 ℃ -15-24 -15-24 Remarks: 1.The above design and specifications are subject to change without prior…

6. Стр. 7 Outdoor Model

   Power supply Cooling V-ph-Hz M3OD-26HFN1-Q 220-240V- 50Hz, 1Ph 220-240V- 50Hz, 1Ph Capacity kW Single 2,05-3,52 Double 4,10-5,28 Three 6,45 Single 2,05-3,52 Double 4,10-5,28 Three 7,62 Input W 1000-1300 1500-1780 1970 / / 2370 Rated current A 4.4-5.7 6.5-7.7 8,83 / / 10,6 / / 3,27 / / 3,21 2,64-4,10…

7. Стр. 8 OU

   higher than IU OU lower than IU Max. height difference between indoor units Cooling Max. height difference between indoor and outdoor unit Ambient temperature Heating m 10 10 m 15 15 m 10 10 ℃ -15-50 -15-50 ℃ -15-24 -15-24 Remarks: 1.The above design and specifications are subject to change without…

8. Стр. 9 Outdoor Model

   Power supply Cooling M4OD-28HFN1-Q V-ph-Hz Capacity kW Single 1,47-4,40 Double 352-6,16 Three 5,28-7,03 FOUR 8,21 Input W 1334-1784 1730-2403 2234-2777 2470 Rated current A 5.8-7.8 7.5-10.7 9.7-12.1 11.2 / / / 3.32 EER Heating 220-240V- 50Hz, 1Ph Capacity kW 1,47-4,40 3,52-6,16 5,28-7,91 9,09 Input…

9. Стр. 10 OU higher

   than IU OU lower than IU Max. height difference between indoor units Cooling Heating Max. height difference between indoor and outdoor unit Ambient temperature m 10 m 15 m 10 ℃ -15-50 ℃ -15-24 Remarks: 1.The above design and specifications are subject to change without prior notice for product…

10. Стр. 11 Outdoor Model

    Power supply Cooling M4OA-36HFN1-Q V-ph-Hz Capacity kW Single 2,05-5,28 Double 4,10-7,62 Three 6,16-10,55 FOUR 10,55 Input W 1250-1700 1650-2320 2150-3520 3280 Rated current A 5.4-7.4 7.2-10.1 9.3-15.3 14.3 / / / 3.22 EER Heating 220-240V- 50Hz, 1Ph Capacity kW 2,34-5,86 4,68-8,50 7,03-11,72 12,02…

11. Стр. 12 OU higher

    than IU OU lower than IU Max. height difference between indoor units Cooling Heating Max. height difference between indoor and outdoor unit Ambient temperature m 10 m 15 m 10 ℃ -15-50 ℃ -15-24 Remarks: 1.The above design and specifications are subject to change without prior notice for product…

12. Стр. 13 Outdoor Model

    Power supply M5OC-36HFN1-Q V-ph-Hz 220-240V- 50Hz, 1Ph Single Cooling 1330-1780 3280 Rated current A 5.8-7.8 14,6 / / / / Capacity kW 2,05-5,28 4,10-7,62 6,15-9,38 8,21-11,72 Input W 1650-2500 Rated current A 7.2-11.0 / 4,10-7,33 6,15-8,79 15,3 W Max. input current A 22.0 Model / Twin-rotary Brand…

13. Стр. 14 OU higher

    than IU OU lower than IU Max. height difference between indoor units Cooling Heating Max. height difference between indoor and outdoor unit Ambient temperature m 10 m 15 m 10 ℃ -15-50 ℃ -15-24 Remarks: 1.The above design and specifications are subject to change without prior notice for product…

14. Стр. 15 Outdoor Model

    Power supply M50D-42HFN1-Q V-ph-Hz Single Double Three FOUR FIVE 220-240V- 50Hz, 1Ph Cooling Capacity kW 2,05-5,28 4,10-8,21 6,15-10,55 8,21-11,72 12,31 Input W 680-1800 1400-2780 2100-3450 2700-3700 3830 Rated current A 3.0-8.0 6.2-11.8 9.0-15.0 11.6-16.0 17,5 / / / / Capacity kW 2,05-5,28…

15. Стр. 16 Ambient

    temperature DM15-01.01.11-01en OU higher Max. height than IU difference between indoor and outdoor OU lower unit than IU Max. height difference between indoor units Cooling Heating m 10 m 15 m 10 ℃ -15-50 ℃ -15-24 Remarks: 1.The above design and specifications are subject to change without prior…

16. Стр. 17 4. Dimensions

17. Стр. 20 H

18. Стр. 21 965 H

19. Стр. 22 5. Wiring Diagram

20. Стр. 25 6. Refrigeration Cycle Diagram

    6.1 Refrigeration circuit drawing of inverter 1 drive 2 type INDOOR OUTDOOR LIQUID VALVE A EXV A CAPILIARY A CHECK VALVE LIQUID VALVE B EXV B CAPILIARY B CAPILIARY TUBE HEAT EXCHANGE (EVAPORATOR) T4 Ambient temp. sensor T1 Room temp. sensor T3 Condenser temp. sensor HEAT EXCHANGE (CONDENSER) T2B-A…

21. Стр. 26 5.3 Refrigeration circuit drawing of inverter 1 drive 4 type

    INDOOR OUTDOOR LIQUID VALVE A LIQUID VALVE B EXV A CAPILIARY A EXV B CAPILIARY B CHECK VALVE LIQUID VALVE C LIQUID VALVE D HEAT EXCHANGE (EVAPORATOR) EXV C CAPILIARY C EXV D CAPILIARY D CAPILIARY TUBE T4 Ambient temp. sensor T1 Room temp. sensor T3 Condenser temp. sensor HEAT EXCHANGE (CONDENSER)…

22. Стр. 27

    INDOOR OUTDOOR LIQUID VALVE A LIQUID VALVE B LIQUID VALVE C LIQUID VALVE D EXV A CAPILIARY A EXV B CAPILIARY B EXV C CAPILIARY C CHECK VALVE EXV D CAPILIARY D CAPILIARY TUBE LIQUID VALVE E HEAT EXCHANGE (EVAPORATOR) T3 Condenser temp. sensor EXV E CAPILIARY E T1 Room temp. sensor T4 Ambient temp.…

23. Стр. 28 7. Indoor units combination

    7.1 Indoor unit combination for M2OD-18HFN1-Q One unit Two unit 7 7+7 9+9 9 7+9 9+12 12 7+12 9+18 18 7+18 12+12 7.2 Indoor unit combination for M3OD-21HFN1-Q, M3OD-26HFN1-Q One unit Two unit Three unit 7 7+7 9+9 7+7+7 7+9+12 9 7+9 9+12 7+7+9 9+9+9 12 7+12 9+18 7+7+12 9+9+12 18 7+18 12+12 7+9+9 7.3…

24. Стр. 29 7.5 Indoor unit combination for M5OC-36HFN1-Q

    One Unit Two Unit Three Unit 7 7+7 9+12 7+7+7 7+9+18 9+9+18 12+18+18 9 7+9 9+18 7+7+9 7+12+12 9+12+12 18+18+18 12 7+12 12+12 7+7+12 7+12+18 9+12+18 18 7+18 12+18 7+7+18 7+18+18 9+18+18 9+9 18+18 7+9+9 9+9+9 12+12+12 7+9+12 9+9+12 12+12+18 Four Unit 7+7+7+7 7+7+9+18 7+9+9+18 7+12+18+18 9+9+18+18…

25. Стр. 30 7.6 Indoor unit combination for M5OD-42HFN1-Q

    One Unit Two Unit 7+7 7+9 7+12 7+18 7+24 9+9 9+12 9+18 9+24 12+12 12+18 12+24 18+18 7+7+7+7 7+7+7+9 7+7+7+12 7+7+7+18 7+7+7+24 7+7+9+9 7+7+9+12 7+7+9+18 7+7+9+24 7+7+12+12 7+7+12+18 7+7+12+24 7+7+18+18 7+9+9+9 7+9+9+12 7+9+9+18 7+7+7+7+7 7+7+7+7+9 7+7+7+7+12 7+7+7+7+18 7+7+7+7+24 7+7+7+9+9…

26. Стр. 31 8. Sound Levels

27. Стр. 32 9. Installation Details

    9.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm N.cm N.cm Ф6.35 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 3500(357kgf.cm) 3600(367kgf.cm) 9.2 Connecting the cables The power cord of connect should be selected…

28. Стр. 33 ● Refrigerant pipe diameter is different according to indoor unit to be connected. When using the

    extension pipe, refer to the tables below. ● When refrigerant pipe diameter is different from that of outdoor unit union (for 18K indoor unit), additional transfer connector needs to be used on outdoor unit union. Indoor unit Extension pipe diameter (mm/inch) Model Pipe diameter (mm/inch) Liquid…

29. Стр. 34 1. Air purging with vacuum pump

    (Indoor unit) (Outdoor unit) (Liquid side) Two-way valve Close (Gas side) Three-way valve Manifold valve Compound meter Pressure gauge -0.1MPa Lo Handle Lo Charge hose Close Hi Handle Hi Charge hose Vacuum pump Vacuum pump 1) Completely tighten the flare nuts of the indoor and outdoor units, confirm…

30. Стр. 35 2. Air purging by refrigerant

    Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve. 3). Air purging. Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare…

31. Стр. 36 3. Adding the refrigerant if the pipe length >5m

    Electronic scale Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to…

32. Стр. 37 9.5 Adding the refrigerant after running the system for many years

    Electronic scale Procedure: 1). Connect the charge hose to the 3-way service port, open the 2-way valve and the 3-way valve. Connect the charge hose to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge. 2). Purge the air from…

33. Стр. 38 9.6 Re-installation while the indoor unit need to be repaired

    1. Collecting the refrigerant into the outdoor unit Procedure 1). Confirm that both the 2-way and 3-way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. 2).…

34. Стр. 39 2. Air purging by the refrigerant

    Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve Leave the valve on the charging cylinder closed. 3). Air purging. Open the valves on the charging cylinder and the…

35. Стр. 40 9.7 Re-installation while the outdoor unit need to be repaired

    1. Evacuation for the whole system Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the opened position. 2). Connect the vacuum pump to 3-way valve’s service port. 3). Evacuation for approximately one hour. Confirm that the compound meter indicates -0.1Mpa. 4). Close the valve…

36. Стр. 41 2. Refrigerant charging

    Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.…

37. Стр. 42 For M5OD-42HFN1-Q.There are one low-pressure centralized valve and one high-pressure centralized

    valve, it will be more time saving when vacumm and recycle refrigerant. But refer to the previous instruction when vacumm and recycle refrigerant. 42 Multi DC inverter R410A. Outdoor unit

38. Стр. 43 10. Electronic control function

    10.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil temperature of indoor heat exchanger outlet. T3: Coil temperature of outdoor heat exchanger T4: Outdoor ambient temperature T5: Compressor discharge temperature Ts: Setting temperature…

39. Стр. 44 10.4 Outdoor unit point check function

    There is a check switch in outdoor PCB. Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it will display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check function display.…

40. Стр. 45

    AD value of voltage 37 EXV open angle for A indoor unit 38 EXV open angle for B indoor unit 39 EXV open angle for C indoor unit 40 EXV open angle for D indoor unit 41 EXV open angle for E indoor unit 42 For example ,the digital display tube show “Cd”, it means AD value is 205. Actual data/4. If the…

41. Стр. 46 Capacity area

42. Стр. 47 10.5 Protection

    10.5.1 Three minutes delay at restart for compressor. 10.5.2 Temperature protection of compressor discharge. When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules: ----If 102 <T5<115 , decrease the frequency to the lower level every 2 minutes…

43. Стр. 48 Heating mode

    Current frequency（Hz） Current limit value（A） HEAT_F16 IHEATLMT12 HEAT_F15 IHEATLMT11 HEAT_F14 IHEATLMT10 HEAT_F13 IHEATLMT9 HEAT_F12 IHEATLMT8 HEAT_F11 IHEATLMT7 HEAT_F10 IHEATLMT6 HEAT_F9 IHEATLMT5 HEAT_F8 IHEATLMT4 HEAT_F7 IHEATLMT3 HEAT_F6 IHEATLMT2 HEAT_F5 IHEATLMT1 Frequency limit Decrease the…

44. Стр. 49 11. Troubleshooting

45. Стр. 50 11.2 Outdoor unit error code explanation

    Display LED STATUS E0 Outdoor EEPROM malfunction E2 Indoor / outdoor units communication error E3 Communication malfunction between IPM board and outdoor main board E4 Open or short circuit of outdoor unit temperature sensor E5 Voltage protection E8 Outdoor fan speed has been out of control F1 No A…

46. Стр. 51 11.3 Trouble shooting

    11.3.1 For the indoor unit 11.3.1.1 Indoor EEPROM malfunction EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage. Multi DC inverter R410A. Outdoor unit 51

47. Стр. 52 11.3.1.2 Indoor / outdoor units communication error

48. Стр. 53

    (Vs), is it moving alternately between positive value and negative value? Pic 2:IPM or outdoor main PCB (For M4OD-28HFN1-Q/tri-zone) Operating Self-Check Pic 2: IPM or outdoor main PCB (For M2OD-18HFN1-Q/M4OA-36HFN1-Q/ qui-zone) Power, Self-Check Operating Multi DC inverter R410A. Outdoor unit 53

49. Стр. 54 PIC3 :Main board LED when power on and unit

    standby. . 54 PIC 4: check point button, Press 1 time for check how many indoor units are connected Multi DC inverter R410A. Outdoor unit

50. Стр. 55 11.3.1.3 indoor unit fan speed has been out of control

    Index 1: 1: Indoor AC fan motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V power supply), the PCB must have problems and need to…

51. Стр. 56 DC motor voltage input and output

52. Стр. 57 11.3.1.4 Open or short circuit of temperature sensor

    Check the connections between temperature sensor and PCB. Are the connections good? No Correct the connections. Yes Measure the resistance value of the sensor via Appendix 1 Is it normal? No Replace the sensor. Yes Replace the indoor PCB 11.3.1.6 Full-water malfunction Multi DC inverter R410A.…

53. Стр. 58 11.3.2 For the outdoor unit

    11.3.2 1 Outdoor EEPROM malfunction(ODU E0) EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage. 58 Multi DC inverter R410A. Outdoor unit

54. Стр. 59 11.3.2.2 Communication malfunction between IPM board and outdoor main board(ODU E3)

55. Стр. 60 11.3.2.3 Voltage protection(ODU E5)

    Voltage protection Check the voltage of outdoor unit power supply, whether the voltage between L(L1) and N (L2) is about 220~240VAC No Check the power supply Yes Check whether the voltage of IPM board P and N is normal? DC277-356V for 18-27KBtu/h; DC277-410V for 36-42KBtu/h No Replace bridge…

56. Стр. 61 11.3.2.4 Outdoor unit fan speed has been out of control (E8)

    Index 1: 1. Outdoor DC fan motor(control chip is inside fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must have problems and need to be replaced.…

57. Стр. 63

    M5OC-36HFN1-Q, M5OD-42HFN1-Q) Low pressure protection Whether the wiring between the low pressure protector and main control board is connected well or correctly No Connect it well Yes Whether the low pressure protector is broken Method: Disconnect the plug. Measure the resistance of the low…

58. Стр. 64 11.3.2.7 Current protection of compressor (ODU P3)

59. Стр. 65 11.3.2.8 Temperature protection of compressor discharge (ODU P4)

    Temperature protection of compressor discharge Check whether the compressor discharge temp. is more than 115°C ? Check whether the refrigerant is leak Yes No Yes Stop leaking and add refrigerant No Check whether the connection is right between compressor discharge temp. sensor and PCB according to…

60. Стр. 66 11.3.2.9 High temperature protection of condenser (ODU P5)

    When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temperature less than 52°C. High temperature protection of condenser Check the connection between temperature sensor and PCB. No No Correct the connection Yes Check whether the condenser…

61. Стр. 67 11.3.2.10 IPM module protection (ODU P6)

    IPM module protection Check whether the voltage range of P-N on IPM module is normal? DC277-356V for 18-27KBtu/h; DC277-410V for 36-42KBtu/h No Check whether the input power supply is correct? 208-230V, 1N, 60Hz No Regulate it to correct, then check whether the system can work normally? Yes No Yes…

62. Стр. 68 11.4 Main parts check

    1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor.…

63. Стр. 70 Appendix 2 Temperature Sensor Resistance Value Table for T5 (℃--K)

64. Стр. 71 2.Compressor checking

65. Стр. 72 3. IPM continuity check

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