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Troubleshooting
Refer to the following chart if the air conditioner operates abnormally. This may save
time and unnecessary expenses.
PROBLEM
The air conditioner
does not work at all.
The temperature
adjustment is not
working.
Cool/Warm air does
not come out of the
air conditioner.
Air flow adjustment
is not working.
SOLUTION
• Check power status and then operate the air conditioner again.
• P lug in or switch on the circuit breaker and then operate the air
conditioner again.
• Ensure Isolator is switch on.
• C heck if you have set the Off Timer. Operate the air conditioner
again by pressing the Power button.
• C heck if you have selected Fan/Fast mode. In these modes, desired
temperature is set to auto and you cannot adjust the temperature.
• C heck if the set temperature is higher(during Cool mode)/
lower(during Heat mode) than the current temperature. Press the
Temp + or - button on the remote controller to change the set
temperature.
• C heck if the Air filter is blocked by dirt. If there is a lot of dust on
the Air filter, cooling(heating) performance may decrease. Clean
them frequently.
• C heck if the outdoor unit is covered or installed near the obstacle.
Take the cover off and take the obstacle away.
• C heck if the air conditioner is operating in defrost mode. When the
ice formed in winter or the outdoor temperature is too low, the
air conditioner operates in defrost mode automatically. In defrost
mode, indoor fan stops and warm air does not come out.
• I f the doors or windows are open, it may cause bad cooling
(heating) performance.
Close the doors and windows.
• C heck if the air conditioner has just been turned on after stopping
cooling or heating operation. In this case, just a fan will run to
protect the outdoor unit compressor.
• C heck if the pipe length is too long. When the pipe length exceeds
maximum allowable pipe length, cooling (heating) performance
may decrease.
• C heck if you have selected
cannot adjust the air flow direction. (If the
operating in Heat mode, you can adjust the air flow direction.)
English-29
mode. In cool mode, you
mode is
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