Midea ATOM B Series Service Manual page 82

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