Problem Possible Causes Solution
The unit is
not working
Power failure
Wait for the power to
be restored
The power is turned off Turn on the power
The fuse is burned out Replace the fuse
Remote control batteries
are dead
Replace batteries
The Unit’s 3-minute
protection has been activated
Wait three minutes
after restarting the unit
Timer is activated Turn timer off
The unit starts
and stops
frequently
There’s too much or too
little refrigerant in the
system
Check for leaks and
recharge the system
with refrigerant.
Incompressible gas or
moisture has entered
the system.
Evacuate and recharge
the system with
refrigerant
The compressor is broken Replace the compressor
The voltage is too high or
too low
Install a manostat to
regulate the voltage
Poor heating
performance
The outdoor temperature
is lower than 7°C (44.5°F)
Use auxiliary
heating device
Cold air is entering
through doors and
windows
Make sure that all
doors and windows
are closed during use
Low refrigerant due to leak
or long-term use
Check for leaks, re-
seal if necessary and
top off refrigerant
Indicator lamps
continue flashing
The unit may stop operation or continue to run safely. If
the indicator lamps continue to flash or error codes
appear, wait for about 10 minutes. The problem may
resolve itself.
If the problem persists, disconnect the power and
contact your nearest customer service center.
Error code appears
in the window
display of indoor
E0, E1, E2…
• P1, P2, P3…
• F1, F2, F3…
NOTE: If your problem persists after performing the checks and diagnostics above, turn
off your unit immediately and contact an authorized service center.
•
If not, disconect the power, then connect it again.
Turn the unit on.
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