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Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Issue
Possible Causes
Solution
Poor cooling
performance
The 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 the instructions.
The air inlet or outlet of
either unit is blocked.
Turn the unit off, remove the obstruction,
and turn the unit back on.
Doors and windows are
open.
Make sure that all doors and
windows are closed while the unit is
operating.
Excessive heat is generated
by sunlight.
Close windows and curtains
during periods of high heat or
bright sunshine.
Too many sources of
heat are in the room
(people, computers,
electronics, etc.)
Reduce the amount of heat sources.
Refrigerant is low due to a
leak or long-term use.
Check for leaks, re-seal if
necessary, and top off refrigerant.
The SILENCE function is
activated.
The SILENCE function can lower
product performance by reducing
operating frequency. Turn off the
SILENCE function.
Tr
oubleshooting
