11.2 PROBLEMS, CAUSES, AND SOLUTIONS
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 the 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
Excessive heat is generated by
sunlight
Close windows and curtains during
periods of high heat or bright
Too many sources of heat in the room
(people, computers, electronics, etc.)
Reduce amount of heat sources
SLEEP function is activated
SLEEP function can lower product
performance by reducing operating
frequency. Turn off SLEEP function.
The unit is not working
Remote control batteries are dead
Poor heating
performance
The outdoor temperature is lower than
44°F (7°C)
Use an auxiliary heating device.
Cold air is entering through doors and
windows
Make sure all doors and windows are
closed during use
Error code appears in
the LED display of the
indoor unit.
The unit may stop operation or continue to run safely. If the
indicator light continues to display an error code, wait for about 10
minutes. The problem may resolve itself. If not, disconnect both solar
and grid power, then connect it again 2 minutes later. Turn the unit
on.
If the problem persists, turn off the unit and contact an
authorized service center.
(See error codes listed in section 11.3)
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