Midea M3OF-27HFN8-Q Service Manual

9.4 Outdoor unit point check function
A check switch is included on the outdoor PCB.
Push SW1 to check the unit's status while running. The digital display shows the following codes each time
the SW1 is pushed.
Number
of
Presses
Display Remark
0 Normal display
Displays running frequency, running state, or malfunction code
1 Quantity of indoor units with working connection Actual data
Display Number of indoor unit
1 1
2 2
3 3
4 4
2 Outdoor unit running mode code Off: 0,Fan only: 1, Cooling: 2, Heating: 3, Forced cooling: 4. Forced
defrosting :A, DHW:C, Heating and DHW: d
3 Indoor unit A capacity
The capacity unit is horse power. If the indoor unit is not connected, the
digital display shows the following: “――”
(9K:1HP,12K:1.2HP,18K:1.5HP)
4 Indoor unit B capacity
5 Indoor unit C capacity
6 Indoor unit D capacity
7 Indoor unit E capacity
8 Indoor unit A capacity demand code
Norm code*HP
(9K: 1HP,12K: 1.2HP,18K: 1.5HP)
9 Indoor unit B capacity demand code
10 Indoor unit C capacity demand code
11 Indoor unit D capacity demand code
12 Indoor unit E capacity demand code
13 Outdoor unit amendatory capacity demand code
14 The frequency corresponding to the total indoor
units' amendatory capacity demand
15 The frequency after the frequency limit
16 The frequency sending to compressor control
chip
17 Indoor unit A evaporator outlet temperature
(T
2B
A)
If the temperature is lower than -9
℃
, the digital display shows “-9.” If
the temperature is higher than 70
℃
, the digital display shows “70.” If
the indoor unit is not connected, the digital display shows: “――”
18 Indoor unit B evaporator outlet temperature
(T
2B
B)
19 Indoor unit C evaporator outlet temperature
(T
2B
C)
20 Indoor unit D evaporator outlet temperature
(T
2B
D)
21 Indoor unit E evaporator outlet temperature
(T
2B
E)
22 Indoor unit A room temperature (T
1
A)
If the temperature is lower than 0
℃
, the digital display shows “0.” If the
temperature is higher than 50
℃
, the digital display shows “50.” If the
indoor unit is not connected, the digital display shows: “――”
23 Indoor unit B room temperature (T
1
B)
24 Indoor unit C room temperature (T
1
C)
25 Indoor unit D room temperature (T
1
D)
26 Indoor unit E room temperature (T
1
E)
27 Indoor unit A evaporator temperature (T
2
A)
If the temperature is lower than -9 ℃, the digital display shows “-9.” If the
temperature is higher than 70 ℃, the digital display shows “70.” If the
indoor unit is not connected, the digital display shows: “――”
28 Indoor unit B evaporator temperature (T
2
B)
29 Indoor unit C evaporator temperature (T
2
C)
30 Indoor unit D evaporator temperature (T
2
D)
31 Indoor unit E evaporator temperature (T
2
E)
32 Condenser pipe temperature (T3)

Midea M3OF-27HFN8-Q Specifications

General

Brand	Midea
Model	M3OF-27HFN8-Q
Category	Air Conditioner
Language	English