Midea LC3 Series Technical & Service Manual page 98

Midea LC3 Series DC Inverter Air conditioner Technical Service Manual
MCAC-UTSM-202006
9.2 Fault and troubleshooting
Fault
Starting
failure
There is air blowing, but the
cooling/ heating effect is poor.
There is air blowing, but the unit
cannot supply cold or hot air.
Cause
Power failure
Power switch is off
The fuse of the power switch is blown.
The time set for the timed power-on
has not arrived.
The batteries of the remote controller
are exhausted.
The temperature setting is
inappropriate.
The air inlet or outlet of the IDU or
ODU is blocked
Doors and windows are open.
The air inlet or outlet of the IDU or
ODU is blocked.
Compressor 3-minute protection
The temperature setting is
inappropriate.
97
Solution
Wait for the power supply to be
restored.
Turn on the power
Replace the burnt fuse.
Replace the batteries.
Wait or cancel the setting.
Set the temperature properly.
Increase or decrease the temperature.
Read Operating Methods for details.
Remove the obstacles.
Close the doors and windows.
Remove the obstacles and
perform the operation again.
Wait.
Set the temperature properly.