Sinclair SDV5 Series Service Manual page 69

Whether refrigerant cooling pipe
assemble properly
Replace the main control board to check
whether the fault is occur again
Exclude whether system is abnormal
and compressor has any abnormal noise
Replace the compressor
2.23.6 L5: Zero speed protection
compressor when startup or running
68
No
Yes
Yes
No
L5
There is abnormal noise of
No
Replace the inverter module
Reinstallation to confirm refrigerant
No
cooling pipe contact with radiator tightly
Yes
Replace the compressor