Midea MRT-60HN2 - Troubleshooting Common Air Conditioner Issues

 Cut off the power, and turn off the breaker.
 Check and clean the inside of unit regularly, this should be taken by the professional.
After idle for a long time
 Check whether the air inlet and outlet positions are clean, if blocked, clean it out.
 Check whether the earthing wire is in good condition and correct connected.
 Clean the unit shell and air filter.
 Check and make sure the drain-pipe can drain smoothly.
 Turn on the switch.
3.12 Trouble shooting
Phenomenon
Reason
Solution method
The air conditioner cannot
operate.
Power off
Wait for the power recovery
Do not connect to the power switch.
Connect to he power switch.
The power switch fuse has been
broken.
Change the fuse.
There has air come out, but
the cooling/heating effect is
not good.
The temperature setting is not suitable.
Properly set the temperature.
The air filter has been blocked by dust.
Clean the filter.
The baffle is opened.
Close the baffle.
The air inlet or outlet has been
blocked.
Clean out the blocks
Compressor 3 minutes protection
Wait for a while.
Malfunction and protection codes
Malfunction code
Content
E1
Return air of indoor side temperature sensor (T1) failure.
E2
Evaporator temperature sensor (T2) failure.
E4
Return air of outdoor side temperature sensor (T4) failure.
E6
Lack of the unit phase.
E8
Humidity sensor failure.
P1
High pressure protection of compressor
P2
Low pressure protection of compressor
P3
High discharge temperature protection, compressor shutdown.
P4
Low temperature protection of evaporator, compressor shutdown.