Manual and User Guide

Page 16
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 aected heat exchanger.
The air lter 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 o, 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 o refrigerant.
The SILENCE function is
activated.
The SILENCE function can lower
product performance by reducing
operating frequency. Turn o the
SILENCE function.
Troubleshooting