Problem Possible Causes
The unit is not working
Power failure Wait for the power to be restored
The power is turned o 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 o
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
The unit starts and stops
frequently
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
o refrigerant
Indicator lamps continue
ashing
The unit may stop operation or continue to run safely. If the indicator lamps continue to ash or error
codes appear, wait for about 10 minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on.
If the problem persists, disconnect the power and contact your nearest customer service center.
Error code appears in the
window display of indoor
unit:
• E0, E1, E2…
• P1, P2, P3…
• F1, F2, F3…
NOTE
If your problem persists after performing the checks and
diagnostics above, turn o your unit immediately and contact an
authorized service center.