Midea V8 VRF Series Service Manual page 12

Table 1.6: voltage test instructions(continued)
Label in
Code
Figure 1.3
15 CN18
17 CN25
CN8
18
23 CN99
Content
Communication Switch Board
Program burning port(indoor unit)
EEV drive port
After-sale Kit communication port
V8 VRF Indoor Units
Description
GND -2
12V
5V
GND-1
3.3V
GND
12V
Using other ports' GND
GND
12V
11