8. TROUBLESHOOTING
21
1. Trouble code display
When the controller creates protection, press the sensor button, the trouble codes will be
displayed at the place for the indoor temperature on the VFD of the indoor unit. Once a
trouble code appears due to the trouble of the air conditioner, it can not be cleared unless
the machine is powered off.
Trouble Code Table ( means the light diode lights up; means the diode goes off)
Outdoor unit display
Content of trouble
Indoor display code
LED02
LED03
LED04
Indoor sensor trouble
1
Evaporator sensor trouble
2
Evaporator freezing
3
Over hot of indoor heatexchanger
4
Communication trouble
5
Fan motor trouble
6
Air outlet sensor trouble
10
Lightness sensor trouble
11
Indoor unit E
2
PROM trouble
13
Outdoor sensor trouble
21
Condenser sensor trouble
22
Over hot of compressor
23
Over current
26
Overload protection
27
Power voltage trouble
28
Momentary power failure
29
Overload of outdoor unit for cooling
30
Defrosting
31
IPM trouble
33
Data failure of outdoor E
2
PROM
33
2. Trouble code display when frequency is restricted
when the protection function is in action, the compressor doesn’t work, only its frequency is
restricted, the LED of outdoor unit displays the work condition.
LED OF outdoor unit
Serial
number
Cause of frequency
restriction
LED02
LED03
LED04
1
In good condition
2
Power voltage isn’t in
normal range
3
Overload of outdoor unit
4
Over current of outdoor
unit
5
Exhaust over hot
6
Evaporator freezing
7
Setting frequency
resistance
