Page 33 mrcool.com
Outdoor Unit Installation
Maintenance
4
4
Maintenance
Troubleshooting
(1) If your air conditioner fails to function normally, check the following items before conducting
maintenance:
Problem Cause Corrective Measure
The air conditioner
will not activate.
Inadequate cooling
or heating
performance
If you turn o the unit and then
immediately turn it on, in order to protect
the compressor and avoid system
overload, compressor will delay running
fo 3 minutes.
Wire connection is wrong.
Fuse or circuit breaker is broken.
Power failure.
Please wait for approx. 3 minutes.
Connect wires according to the wiring
diagram.
Replace the fuse or switch on the circuit
breaker.
Restart after power returns.
Power plug is loose. Re-insert the power plug.
Air inlet and outlet of the units have
been blocked.
Clear the obstacles and keep the area
well ventilated.
Improper temperature setting. Reset to a proper temperature.
Fan speed is too low. Reset to a proper fan speed.
Air ow direction is incorrect. Change the direction of air louvers.
Doors or windows are open. Close them.
Air inlet and outlet of the units have
been blocked.
Clear the obstacles and keep the area
well ventilated.
Exposed under direct sun light.
Put on curtains or louvers in front of the
windows.
Too many heat sources in the room. Remove unnecessary heat sources.
Filter is blocked or dirty. Have a professional clean the lter.
To Next Page
Loading...
Need help?
General
