Midea MV6-i400WV2GN1-E - Main PCB Ports

V6-i VRF 50/60Hz
59
Part 5
- Electrical Components and Wiring Diagrams
Table 5-2.1: Main PCB ports
Label in
Figure 5-2.1
Port code
Content
Port voltage
1
CN18
Low pressure switch connection
0V or 5V DC
2
CN19
High pressure switch and discharge temperature switch(es)
connections
0V or 5V DC
3
CN4
Compressor top temperature sensor (single compressor
units) or compressor A compressor top temperature sensor
(dual compressor units) connection
0-5V DC (varying)
4
CN5
Discharge pipe temperature sensor (single compressor units)
or compressor B compressor top temperature sensor (dual
compressor units) connection
0-5V DC (varying)
5
CN3
Inverter module temperature sensor A connection
0-5V DC (varying)
6
CN3_1
Inverter module temperature sensor B connection
0-5V DC (varying)
7
CN17
High pressure sensor connection
0-5V DC (varying)
8
CN15
Inverter compressor A and B current sensor connections
0-7.8V AC (varying)
9
CN16
Reserved
/
10
CN8
Plate heat exchanger inlet temperature sensor connection
0-5V DC (varying)
11
CN1
Outdoor ambient temperature sensor and outdoor heat
exchanger temperature sensor connections
0-5V DC (varying)
12
CN8_1
Plate heat exchanger outlet temperature sensor connection
0-5V DC (varying)
13
CN20
Communication port to outdoor unit
2.5-2.7V DC
14
CN26
Communication port to compressor drive board
2.5-2.7V DC
15
CN27
Communication port to fan drive board
2.5-2.7V DC
16
CN25
Communication port
2.5-2.7V DC
17
CN28
Reserved
/
18
CN71
EEVB drive port
0V or 12V DC
19
CN70
EEVA drive port
0V or 12V DC
20
CN72
EEVC drive port
0V or 12V DC
21
CN82
Control port of relay for AC filter board
0V or 12V DC
22
CN66-CN67
Power supply to compressor crankcase heater
220V AC
23
CN47
Four-way valve drive ports
220V AC
24
CN41-CN46;
CN83-CN85
Solenoid valve drive ports
220V AC
25
CN30
Power input of main board
220V AC between A/B/C and N;
380V AC between A,B and C