Midea MV6-252WV2GN1 Service Manual page 96

Procedure
H0
Compressor inverter module
address setting is incorrect
Communication wire from outdoor main
PCB CN26 to inverter module CN8/CN9 is
loosen
Both LED1 and LED2 on inverter module
are off when power on
Replace the outdoor main PCB, is the
malfunction solved?
Replace the inverter module
No
2
No
3
No
No
Reset the compressor inverter module
Yes
address via dial switch S7 on inverter
module
Yes
Reconnect the communication wire
Yes
Check the power supply circuit
Yes
V6 VRF 50/60Hz
1
4
Normal
95