20
MALFUNCTION
MALFUNCTION ANALYSIS
Please check below items before asking for servicing. If the malfunction still cannot be eliminated,
please contact a qualified person.
Errors
Possible Causes
Failed startup
There is no power supply.
The breaker opens owing to electrical leakage.
Voltage is too low.
Stop after a short while of operation
The air inlet/outlet of the indoor/outdoor unit is clogged.
Poor cooling effect
The air filter screen is too dirty or clogged.
There are too much heat sources or people in the room.
The door or window is open.
There are obstacles at the air inlet/outlet.
The set temperature is too high.
Poor heating effect
The air filter screen is too dirty or clogged.
The door or window is not closed fully.
The set temperature is too low.
Uncontrollable controller
If the remote controller crashes even if the batteries have been
replaced, please open the back cover of it and press the button
“ACL” to let it back to the normal condition.
Is the remoter controller in the signal receiving range?
Or is it blocked by obstacles?
For the duct type unit, operate the remote controller pointing
at the wired controller.
