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20
7. TROUBLESHOOTING
Symptom
Inspection
Solution
The unit is not
operating.
Check the power
connection securely.
Insert the power cord securely
into the wall outlet.
Check if the water level
indicator lights up.
Empty the drain pan by removing
the rubber plug.
Check the room temperature.
The range of the operating
temperature is 41−95℉.
The unit
works with
reduced
capacity.
Check the air filter for dirt.
Clean the air filter as necessary.
Check if the air duct is
blocked.
Clear the obstacle.
Check if the room door or the
window is open.
Keep the door and windows
closed.
Check if the desired operating
mode is selected and the
temperature is properly set.
Set the mode and temperature at
proper set-point according to the
manual.
The exhaust hose is detached.
Make sure the exhaust hose is
securely attached.
Water
Leakage
Overflow while moving the
unit.
Empty the water tank before
transport.
Check if the drain hose is
kinked or bends.
Straighten the hose.
Excessive
Noise
Check if the unit is securely
positioned.
Place the unit on horizontal and
firm ground.
Check if there are any loose or
vibrating parts.
Secure and tighten the parts.
Noisy sounds like water
flowing
Noise comes from the flowing
refrigerant. This is normal.
Error
Codes
E0
Communication faults
between main PCB and
display PCB.
Check the wire harness of the
display PCB for damage.
E1
Ambient temperature sensor
failure
Check connection or replace it.
Clean or replace the temperature
sensor.
E2
Coil temperature sensor
failure
Check connection or replace it.
Clean or replace the temperature
sensor.
Ft
High level alarm of
condensate water
Empty the drain pan by removing
the rubber plug.
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