Midea ATOM MDV-V56WDHN1(AtB) - Page 81

Atom B Series VRF 50/60Hz
80
Midea
Atom B
Series
Service Manual
2.23.6 L5: Zero speed protection
L5
There is abnormal noise of
compressor when startup or running
Yes
Replace the compressor
No
Replace the inverter module
2.23.7 L7: Phase sequence error
L7
Compressor wiring is loose
Yes
Reconnect cables based
on wiring diagram
No
An open circuit in the 3-phase U/V/W
of compressor terminals
Yes
Replace the compressor
No
Replace the inverter module