Midea MV5-X252W/V2GN1 Service Manual page 45

V5 X VRF 50/60Hz
Table 5-2.2: Main PCB ports
Label in Port
Figure 5-2.1 code
Compressor top temperature sensor (single compressor units) or
1 CN10 compressor A compressor top temperature sensor (dual
compressor units) connection
Discharge pipe temperature sensor (single compressor units) or
2 CN11 compressor B compressor top temperature sensor (dual
compressor units) connection
3 CN4 Inverter module temperature sensor connection
4 CN26 Reserved
5 CN25 Communication port
6 CN30 Power input
7 CN80 Reserved
8 CN31 No.1 transformer power input
9 CN33 No.2 transformer power input
10 CN66 Power supply to compressor A crankcase heater
11 CN67 Power supply to compressor B crankcase heater
12 CN70 EVXA drive port
13 CN71 EVXB drive port
CN47-
14 Four-way valve drive ports
CN49
CN41-
15 Solenoid valve drive ports
CN45
16 CN54 Power output
CN57-
17 Neutral terminals
CN59
18 CN32 No.1 transformer power output
19 CN34 No.2 transformer power output
20 CN39 Inverter module B control port
21 CN38 Inverter module B voltage monitor port
22 CN36 Inverter module A voltage monitor port
23 CN37 Inverter module A control port
24 CN35 5V DC, 12V DC power input
25 CN19 Low pressure switch connection
High pressure switch and discharge temperature switch(es)
26 CN18
connections
27 CN28 Reserved
28 CN16 Reserved
29 CN15 Inverter compressor A and B current sensor connections
30 CN17 High pressure sensor connection
31 CN2 Reserved
Outdoor ambient temperature sensor and outdoor heat exchanger
32 CN1
temperature sensor connections
33 CN20 Outdoor units communication port
34 CN65 Fan B control port
35 CN64 Fan A control port
44
Content Port voltage
0-5V DC (varying)
0-5V DC (varying)
0-5V DC (varying)
2.5-2.7V DC
380V
220V
220V
220V
220V
First pin on the left: 12V DC; other four pins:
varying
220V
220V
220V
0
Voltage between upper two pins: 13.5V AC;
voltage between lower two pins: 9V AC
Voltage between upper two pins: 14.5V AC;
voltage between lower two pins: 14.5V AC
Third pin on the left: 3.3V DC
540V DC, +15V DC, N
540V DC, +15V DC, N
Third pin on the left: 3.3V DC
GND, +5V, +12V, GND, 12V
0 or 5V
0 or 5V
0-7.8V AC (varying)
0-5V DC (varying)
0-5V DC (varying)
2.5-2.7V DC
First pin on the left: 12V DC; other four pins:
varying
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