Midea MDV-V80W/DN1

R410a Full DC Inverter Mini VRF MCAC-VTSM-2013-12
92 Troubleshooting
7 CN26
Transformer voltage detect input port
DC 380V
8 CN18
Power supply of outdoor fan port
DC380V +15V
9 CN6
Communication port between mainboard 1 and mainboard 2
(mainboard 1 & 2 refers to the wiring diagram)
DC 5V
10 CN17
DC fan 1 port(fan up)
DC 380V
11 CN19
DC fan 2 port(fan down)
DC 380V
12 CN51
Transformer voltage detect output port
DC 380V
13 CN12
High/ low pressure detect switch
DC 5V
14 CN24
Heat sink temperature sensor T6
DC0~5V (in dynamic change)
15 CN8
Compressor discharge temperature sensor T5
DC0~5V (in dynamic change)
16 CN9
T3,T4 temperature sensor
DC0~5V (in dynamic change)
17 CN10
Communication port between indoor unit and outdoor unit
DC 5V
18 CN30
Communication port between indoor units
DC2.5~5V
19 CN22
EEV driving port
DC 12V
20 CN1
Power input port
220V
21 CN2
Power input port
220V