Troubleshooting
Page 12
Revised 5/14/2020
Issue
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
Poor Cooling
Performance
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
System circuit is blocked
Determine which circuit is blocked and
replace the malfunctioning piece of
equipment
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 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.
Error code appears
and begins with the
letters as the follow-
ing 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
