Midea MUE-18HRN1-Q - Page 252

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