Midea Mini C Series Service Manual page 40

Figure 5-1.3: 100/120 model outdoor unit Communication converter board PCB Ports
Table 5-1.3: 100/120 model communication converter board PCB ports
Label in
Figure 5-1.3
1
2
3
4
5
Port code
CN1 R T communication port
P Q E X Y E communication port（with main board）
CN2
CN3 O A communication port（reserved）
P Q E X Y E communication port
CN4
CN300 Program port
Mini C Series VRF 50/60Hz
Content Port voltage
2.5-2.7V DC
2.5-2.7V DC
2.5-2.7V DC
2.5-2.7V DC
5V DC
39