Midea MOBA30U-12HN1-Q Service Manual page 252

Troubleshooting
c. Overload of current
Check if the voltage of the power
supply is too low
Check if the operation condition is
normal, especially the outdoor unit?
Check if the outdoor fan is defective
Check if the compressor is running
Replace the main PCB
Turn on the units and check if the
problem remains
Check if the capillary is blocked
There is some air mixed inside the
refrigerant system
248
No
Yes
No
normally
Yes
Yes
No
Yes
No
Yes
No
Yes
Replace the capillary
Evacuate the system and
recharge refrigerant
Regulate the power supply
Correct the operation condition
Replace the outdoor fan
Replace the compressor
Electrical Control