Midea ATOM MDV-V56WDHN1(AtB) - Page 82

Atom B Series VRF 50/60Hz
81
Part
6
-
Diagnosis and Troubleshooting
2.23.8 L8 / L9 troubleshooting
L8/L9
Compressor wiring is not properly
Yes
Reconnect the cables based on
wiring diagram
No
The resistance between 3 phases of
compressor is over 5Ω
Yes
Replace the compressor
No
The insulation resistance of
compressor is less than 100Ω
Yes
No
The compressor has less than 12
hours preheating before initial
operating
Yes
Ensure enough preheating time
No
Replace the compressor inverter
board, restart the unit and the error
is solved
Yes
Normal
No
Refer to P1 or P3 troubleshooting