Trouble Shooting
Problem
Cause
Trouble Shooting/ Remedy
The power supply is turned OFF.
Turn the power supply ON.
The fuse in the PCB is gone or blown.
Replace fuse.
Running at low (model 75/100)
Switch to high mode
Reverse rotation (model 125/150)
Swtich the phase for power line
The set temperature is higher than room
temperature
Lower the set temperature.
The room temperature is excessively low for cooling
Can not operate as it is out of temperature
control range.
If error code E4 on control panel.
a Phase protector open (condensing unit)
refer to 7-13
b High pressure switch open
Contact your dealer
c Low pressure switch open
Contact your dealer
d comp overload protector open
Contact your dealer
The unit is just started the cooling mode
Wait for a while
High infiltration through door, windows
Close the door ,windows
High infiltration through door, windows
High infiltration through door, windows
Air flow too high
Change fan speed
Drain pipe is cloagged, water overflow
Clear the drain pipe
Cooling , but not cold enough
Water discharge from
the unit
Unit cannot operate
In case of malfunction, perform the following preliminary check , before asking for repair service.
Air flow too small
At Cooling Mode, no
cold air is delivered
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Summary of Contents for KFDH100
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