Midea M2OC-18HRDN1 Manuel de service

ODMI-A-1110 SERVICE MANUAL MIDEA AIRCONDITIONER North America MARKET DC INVERTER MULTI TYPE M2OC-18HRDN1-M M3OC-27HRDN1-M M4OC-36HRDN1-M DC MU

ODMI-A-1110 6. Indoor units combination 6.1 Indoor unit combination for M2OC-18HRDN1-M Comb. Combinations Unit A Unit B Dual(1x1) 9k — 12k — 18k —

ODMI-A-1110 7. Installation Details 7.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N.cm

ODMI-A-1110 7.4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below: ● Pressure in the syst

ODMI-A-1110 points. Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump. Confirm that the gauge needle doe

ODMI-A-1110 2-way valve approximately 45’ until the gauge indicates 0.3 to 0.5 Mpa. 6). Disconnect the charge set and the charging cylinder, and set t

ODMI-A-1110 from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the hose. 7). Mount the valve stem c

ODMI-A-1110 7). Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to chec

ODMI-A-1110 Use a torque wrench to tighten the 3-way valves service port cap to a torque of 1.8 kgf.m. Be sure to check for gas leakage. 2. Air purgin

ODMI-A-1110 Be sure to use a hexagonal wrench to operate the valve stems. 7). Mount the valve stems nuts and the service port cap Be sure to use a tor

ODMI-A-1110 2. Refrigerant charging Procedure: 1). Connect the charge hose to the charging cylinder; open the 2-way valve and the 3-way valve Connect

ODMI-A-1110 CONTENTS 1. General information of Outdoor Units ... 3 2.Features ...

8. Electronic control function 8.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil

14 EXV open angle for 2# indoor unit Actual data divide 8 15 EXV open angle for 3# indoor unit Actual data divide 8 16 EXV open angle for 4# indoor

8.4.4Number of indoor unit Display Number of indoor unit 1 1 2 2 3 3 8.4.5 Outdoor ambient temp: Display Corresponding temp. Display Corres

8.4.6 Opening degree of electronic expansion valve: Actual opening degree equals the display data divided 8 8.5 Protection 8.5.1 Three minutes del

HEAT_F7 IHEATLMT3 (When the frequency>Heat_F4 via capacity demand). HEAT_F6 IHEATLMT2 HEAT_F5 IHEATLMT1 If the current frequency is lower than

9. Troubleshooting 9.1 Indoor unit error code explanation: Vertu series & 9A series: Display LED STATUS E0 EEPROM parameter error E1 Commu

9.3 Trouble shooting 9.3.1 Indoor unit trouble shooting Indoor unit display LED STATUS E0 EEPROM parameter error Shut of

Indoor unit display LED STATUS E1 Communication malfunction between indoor and outdoor units No Yes Yes No Yes The unit does not work norma

Indoor unit display LED STATUS E2 Zero-crossing signal error Indoor unit display LED STATUS E3 Indoor fan speed out of control Indoor unit

Indoor unit display LED STATUS E6 Open or short circuit of room or evaporator coil temperature sensor Indoor unit display LED STATUS P0 Inver

ODMI-A-1110 1. General information of Outdoor Units Model name Dimension (mm(in)) Compressor M2OC-18HRDN1-M 845x320x700(33.3x12.6x27.6) DA130S1C-

Indoor unit display LED STATUS P2 Temperature protection of compressor top. Indoor unit display LED STATUS P3 Outdoor temp. too low protect

9.3.2 Outdoor unit trouble shooting Outdoor unit display LED STATUS E0 EEPROM parameter error Outdoor unit display LED STATUS E1 No 1 Indoor u

Outdoor unit display LED STATUS E3 No 3 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective Outdoor unit display LE

Outdoor unit display LED STATUS E4 Open or short circuit of outdoor temperature sensor Outdoor unit display LED STATUS E5 Compressor volt prote

Outdoor unit display LED STATUS E7 Communication error between outdoor IC and DSP Is the LED in outdo

Outdoor unit display LED STATUS P0 Temperature protection of compressor top. Off: 105c; On: 90c The trouble shooting is same with the one of in

Outdoor unit display LED STATUS P6 Condenser high-temperature protection When outdoor pipe temp. is more than 65°C, the unit will stop, and uni

Outdoor unit display LED STATUS PF PFC module protection No No Yes Check w

Annex 1 Characteristic of temp. sensor Temp. ℃ Resistance K© Temp. ℃ Resistance K© Temp. ℃ Resistance K© -10 62.2756 17

Annex 2 1. Reference voltage data: a) Rectifier : Input :220-230V(AC), output :310V(DC) b) Inverter module: U,V, W 3ph. Result U-V 60-150V(AC)

ODMI-A-1110 2．Features The hydrophilic fin can improve the heating efficiency at operation mode. It is only operated in the heating operation mode

ODMI-A-1110 3. Dimensions mm(in) Model W D H W1 A B M2OC-18HRDN1-M 845((33.3) 320(12.6) 700(27.6) 908(35.7) 560(22) 335(13.2) M3OC-27HRDN

ODMI-A-1110 4. Wiring Diagram 4.1 M2OC-18HRDN1-M 4.2 M3OC-27HRDN1-M

ODMI-A-1110 4.3 M4OC-36HRDN1-M

ODMI-A-1110 5. Refrigeration Cycle Diagram 8.1 Refrigeration circuit drawing of inverter dual zone 5.2 Refrigeration circuit drawing of inverter

ODMI-A-1110