Midea ATOM B Series Service Manual page 36

2 Outdoor Unit Main PCB
2.1 Ports
Figure 5-2.1: 28 model outdoor unit main PCB ports
Table 5-2.1: 28 model main PCB ports
Label in
Port code
Figure 5-1.1
1 CN6/CN6-1
2
3
4 CN60
5 CN16
6 CN18
7 CN414
8 CN30
9
10 CN507
11 U/V/W
Earth
CN7 Power input
CN8 Power input
Four way valve
Reserved
Electronic expansion valve port
Fan motor port
Main board communication converter board communication port
Communication port between outdoor unit and indoor units;
CN5
Energy meter communication port
Chip burning port
Compressor U/V/W output
Atom B Series VRF 50/60Hz
Content Port voltage
0V
AC 220V
AC 220V
AC 220V
/
Pin 1: DC12V;
Other pins:
Dynamic
change
DC 240-350V
DC 0-5V
DC 2.5-5V
DC 5V
DC 240-350V
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