Manual and User Guide

 Page 17 
Issue Possible Causes Solution
The unit is not
working
There is a 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.
The remote control batteries are
dead.
Replace the batteries.
The unit’s 3-minute protection
has been activated.
Wait 3 minutes after
restarting the unit.
The timer is activated. Turn the 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.
Poor heating
performance
The outdoor temperature is
lower than 44.5°F (7°C).
Use an auxiliary heating
device.
Cold air is entering through
doors and windows.
Make sure that all doors
and windows are closed
during use.
Refrigerant is low due to a leak
or long-term use.
Check for leaks, re-seal
if necessary, and top o
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 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.
An error code appears
in the window display
of the 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.
Troubleshooting