Troubleshooting
When troubles occur, please check the following points before contacting a repair
company.
Problem Possible Causes Solution
Poor Cooling
Performance
Temperature setting
may be higher than
ambient room
temperature
Lower the temperature setting
The heat exchanger on
the indoor or outdoor
unit is dirty
Clean the affected heat exchanger
The air filter is dirty
Remove the filter and clean it
according to instructions
The air inlet or outlet of
either unit is blocked
Turn the unit off, remove the
obstruction and turn it back
on
Doors and windows
are open
Make sure that all doors
and windows are closed
while operating the unit
Excessive heat is
generated by sunlight
Close windows and curtains
during periods of high heat
or bright sunshine
Too many sources of
heat in the room
(people, computers,
electronics, etc.)
Reduce amount of heat sources
Low refrigerant due to
leak or long-term use
Check for leaks, re-seal if
necessary and top off refrigerant
SILENCE
function is
activated
SILENCE function can lower
product performance by
reducing operating frequency.
Turn off SILENCE function.
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