Midea M2OD-14HFN1-Q User manual

SERVICE MANUAL
MIDEA AIRCONDITIONER
EUROPE MARKET
SUPER DC INVERTER MULTI TYPE
M2OD-14HFN1-Q
M2OD-16HFN1-Q
M2OD-18HFN1-Q
M3OD-21HFN1-Q
M3OD-26HFN1-Q
M3OD-27HFN1-Q
M4OD-28HFN1-Q
M4OA-36HFN1-Q
M5OC-36HFN1-Q
M5OD-42HFN1-Q
DC MULTI OUTDOOR UNITS

CONTENTS
1. General information of Outdoor Units..........................................3
2. Features..........................................................................................4
3. Dimensions.....................................................................................5
4. Wiring Diagram.............................................................................12
5. Refrigeration Cycle Diagram.......................................................16
6. Indoor units combination ............................................................19
7. Sound Levels................................................................................22
8. Installation Details........................................................................23
9. Electronic control function..........................................................34
10. Troubleshooting.........................................................................40

1. General information of Outdoor Units
Model name
Dimension (mm)
Compressor
M2OD-14HFN1-Q
845x320x700
DA130M1C-31FZ
M2OD-16HFN1-Q
810x310x558
ASN108D22UEZ
M2OD-18HFN1-Q
810x310x558
DA130M1C-31FZ
M2OD-18HFN1-Q
845x320x700
DA150S1C-20FZ
M3OD-21HFN1-Q
845x320x700
DA150S1C-20FZ
M3OD-26HFN1-Q
845x320x700
DA150S1C-20FZ
M3OD-27HFN1-Q
900x315x860
DA250S2C-30MT
M4OD-28HFN1-Q
900x315x860
DA250S2C-30MT
M4OA-36HFN1-Q
990x345x965
TNB306FPGMC-L
M5OC-36HFN1-Q
990x345x965
TNB306FPGMC-L
M5OD-42HFN1-Q
990x345x965
MNB36FAAMC-L

2. Features
The hydrophilic fin can improve the heating efficiency at operation mode.
It protects the valves and prevents water from dripping.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Outdoor unit
Power relay control
Hydrophilic aluminum fin
Anti-rust cabinet
Valve protection cover
Low noise air flow system
Discharge pipe temperature protection

3. Dimensions
M2OD-14HFN1-Q, M2OD-18HFN1-Q
560 W1
H
6
D1 335
D2 360 845 W
313
D3
335
D1
R6 R5
A1
22
A2
50
B1
120
110
B2
700
W2
73
58 58 58
110
H1
H2
200.7
243.6
L1 L2

M2OD-16HFN1-Q, M2OD-18HFN1-Q(W190)
D2 348
558
H
W2
64
795 W
549 W1
810 W3
A2
61.6 A1
25.4
R20 R7.7
289
D3
D1 325
10
B1
66.6
B2
104.2
50 H1
90 H2

M3OD-21HFN1-Q, M3OD-26HFN1-Q
560 W1
H
6
D1 335
D2 360 845 W
313
D3
335
D1
R6 R5
A1
22
A2
50
B1
120
110
B2
700
W2
73
58 58 58 58 58
110
H1
H2
200.7
243.6
L1 L2

M3OD-27HFN1-Q
900 W
590 W1
860
H
12
D2 355
D1 333
302
D3
333
D1
50
97
90
B2 B1
8
A2
5555 55 55 55110
62
W2
H1
H2
R6
238.4
285.7
L1 L2

M4OD-28HFN1-Q
900 W
590 W1
860
H
12
D2 355
D1 333
302
D3
333
D1
50
97
90
B2 B1
8
A2
5555 55 55 55 55 55110
62
W2
H1
H2
R6
238.4
285.7
L1 L2

M4OA-36HFN1-Q
624 W1
990 WD2 397
D1 366
965
10
H
78
W2
340
366
D3 D1
125
145
B1
B2
60 22
A2 A1
55
140
H1
H2
R5
R6

M5OC-36HFN1-Q, M5OD-42HFN1-Q
990 W W2 81
624 W1
D2 397
D1 366
55 H1 965 H
153 H2
366 D1
B2 125
B1 145
D3 345
60 22
A2 A1
R5
R6

4. Wiring Diagram
M2OD-14HFN1-Q, M2OD-18HFN1-Q

M2OD-16HFN1-Q, M2OD-18HFN1-Q(W190)

M3OD-27HFN1-Q, M3OD-21HFN1-Q, M3OD-26HFN1-Q
M4OD-28HFN1-Q
M4OA-36HFN1-Q

M5OC-36HFN1-Q, M5OD-42HFN1-Q

5. Refrigeration Cycle Diagram
5.1 Refrigeration circuit drawing of inverter 1 drive 2 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
Accumulator
T2B-A Evaporator
temp. sensor outlet
T2B-B
5.2 Refrigeration circuit drawing of inverter 1 drive 3 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C Accumulator
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C

5.3 Refrigeration circuit drawing of inverter 1 drive 4 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
GAS VALVE D
Accumulator High pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
5.4 Refrigeration circuit drawing of M5OC-36HFN1-Q
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
GAS VALVE D
EXV E CAPILIARY E
LIQUID VALVE E
GAS VALVE E Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
Accumulator High pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
T2B-E

5.5 Refrigeration circuit drawing of M5OD-42HFN1-Q
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR) HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
GAS VALVE D
EXV E CAPILIARY E
LIQUID VALVE E
GAS VALVE E Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
Accumulator High pressure
switch
Low pressure
switch

6. Indoor units combination
6.1 Indoor unit combination for M2OD-14HFN1-Q
One unit
Two unit
7
7+7
9+9
9
7+9
9+12
12
7+12
18
6.2 Indoor unit combination for M2OD-16HFN1-Q
One unit
Two unit
7
7+7
9+9
9
7+9
9+12
12
7+12
6.3 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
6.4 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
6.5 Indoor unit combination for M3OD-27HFN1-Q
One unit
Two unit
Three unit
7
7+7
9+9
12+18
7+7+7
7+9+9
7+12+18
9+12+12
9
7+9
9+12
18+18
7+7+9
7+9+12
9+9+9
9+12+18
12
7+12
9+18
7+7+12
7+9+18
9+9+12
12+12+12
18
7+18
12+12
7+7+18
7+12+12
9+9+18

6.6 Indoor unit combination for M4OD-28HFN1-Q
6.7 Indoor unit combination for M4OA-36HFN1-Q
6.8 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
7+7+7+9
7+7+12+12
7+9+12+12
9+9+9+9
9+12+12+12
7+7+7+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+7
7+7+7+9+18
7+7+9+12+18
7+9+9+12+18
9+9+9+12+12
7+7+7+7+9
7+7+7+12+18
7+7+12+12+18
7+9+12+12+12
9+9+9+12+18
7+7+7+7+12
7+7+7+18+18
7+9+9+9+9
7+9+12+12+18
9+9+12+12+12
One unit
Two unit
Three unit
Four unit
7
7+7
9+9
12+18
7+7+7
7+9+9
9+9+9
7+7+7+7
7+7+9+9
7+9+9+12
9
7+9
9+12
18+18
7+7+9
7+9+12
9+9+12
7+7+7+9
7+7+9+12
7+9+12+12
12
7+12
9+18
7+7+12
7+9+18
9+9+18
7+7+7+12
7+7+12+12
9+9+9+9
18
7+18
12+12
7+7+18
7+12+12
9+12+12
7+7+7+18
7+9+9+9
9+9+9+12
7+12+18
One unit
Two unit
Three unit
Four unit
7
7+7
9+9
12+12
7+7+7
7+12+12
9+12+18
7+7+7+7
7+7+12+12
7+9+12+18
9+9+12+12
9
7+9
9+12
12+18
7+7+9
7+12+18
9+18+18
7+7+7+9
7+7+12+18
7+9+18+18
9+9+12+18
12
7+12
9+18
18+18
7+7+12
7+18+18
12+12+12
7+7+7+12
7+7+18+18
7+12+12+12
9+12+12+12
18
7+18
7+7+18
9+9+9
12+12+18
7+7+7+18
7+9+9+9
7+12+12+18
9+12+12+18
7+9+9
9+9+12
12+18+18
7+7+9+9
7+9+9+12
9+9+9+9
12+12+12+12
7+9+12
9+9+18
7+7+9+12
7+9+9+18
9+9+9+12
12+12+12+18
7+9+18
9+12+12
7+7+9+18
7+9+12+12
9+9+9+18