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3 TROUBLESHOOTING GUIDE
3.1 TROUBLESHOOTING GUIDE
In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused from
an electrical defect, another is ineffective Air Conditioning caused by a defect in the refrigeration circuit and
improper application, and the other is called the Structure Damage.
ROOM AIRCONDITIONER VOLTAGE LIMITS:
NAMEPLATE RATING
MINIMUM
MAXIMUM
220~240V 198V
254V
3.1.1 Water level protection function abnormal
Abnormal water level protection function includes the following: (1) There is an alarm when the water
level is normal and (2) There is no alarm for full water.
3.1.2 Automatic trouble alarm
When the pipe temperature sensor is defective, the motors of the compressor and the fan will be shut
down, and the power indicator will flash at 5 Hz.
Power indicator flashes at 5 Hz
The connector CN3 in
main PCB is loosed
Place it properly
Pipe temperature sensor trouble
Replace pipe temperature sensor
Trouble in input circuit of water
level switch of drive board
components
Water level
switch broken
Replace
switch
Broken Main
chip of PCB
components
Replace PCB
components
Floating ball
of water tank
too heavy
Take out water tank
and remove water
Loosed input plug of
water level switch
Plug it again
properly
Trouble in input circuit of water
level switch of drive board
components
Water level
switch broken
Replace
switch
Broken main chip of
PCB components
Replace PCB
components
No alarm at full water
Water tank not
placed properly
Place water
tank carefully
Alarm at normal water
