AUX AL-H12/4R1D, Service Manual

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AUX-Light CAC 50Hz R410A Trouble shooting
123
4.Failure phenomenon
Phenomenon Causing explanation
Mirage comes out from indoor
unit
When the cold air from AC cools the indoor air
Noise
1. When air conditioner stops running, there will be some noise, and this is because the
refrigerant flows contrarily.
2. AC expand or shrink according to temperature, causing harsh sounds
3. Liquid sound is from refrigerant flowing
Sometimes, the room is
smelly
1. The AC itself will not be smelly, if it is smelly, it is because environment smell
accumulated
2. Solution: clean the filter
when heating, there is no wind
at the beginning of starting
unit
1. It is to prevent cold air blowing, please be patient
2. The unit has auto-restart function, when it is repowered again, unit will run according
to the mode which is set before the power off. (Note: default is closed)