Midea V6 Series Service Manual page 105

V6 VRF 50Hz
2.15.10 L7: Phase sequence error
Disconnect the
power supply
104
L7 protection
Compressor wiring is loose
No
An open circuit in the 3-phase U/V/W
of compressor terminals
No
Replace the inverter module
Yes
Reconnect cables based on
wiring diagram
Yes
Replace the compressor