Midea MHC - V18W/D2RN8 - Page 31

M thermal Mono
30 202008
Midea M thermal Mono
Service Manual
Table 4-2.2: MHC-V18(22,26,30)W/D2RN8 outdoor unit main PCB for refrigerant system
Label in Figure
4-2.2
Code Content
1 CN41
Power supply port for PCB B
2 CN11
Port for IC programming
3 CN6
Port for pressure sensor
4 CN5
Port for suction temp. sensor
5
CN8
Port for discharge temp. sensor
6
CN9
Port for outdoor ambient temp. sensor and condenser temp. sensor
7
CN29
Port for low pressure switch and quick check
8
CN24
Port for communication with hydro-box control board
9
CN4
Port for communication with PCB C
10
S5, S6
DIP switch
11
CN26
Port for communication with Power Meter
12
CN22
Port for electrical expansion value
13
CN53
Port for fan 310VDC power supply
14
CN21
Power supply port for hydro-box control board
15
CN35
Port for other temp. sensor
16
CN28
Port for communication XYE
17
CN18
Port for 4-way value
18
CN10
Port for electric heating tape1
19
CN7
Port for electric heating tape2
20
CN37
Port for communication D1D2E
21
CN31
Port for high pressure switch and quick check
22
CN30
Port for fan 15VDC power supply
23
CN107/109
Port for fan
24
CN36
Port for communication with PCB A
25
CN38
Port for GND
26
CN20/27
Port for SV
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