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 extremely
low
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
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 and
begins with the letters
as the following in
the window display of
indoor unit:
● E (x), P (x), F (x)
● EH (xx), EL (xx), EC
(xx)
● PH (xx), PL (xx), PC
(xx)
NOTE: If your problem persists after performing the checks and diagnostics above, turn off your unit
immediately and contact an authorized service center.
Troubleshooting
Page 15-GB
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