Use and Care Manual

14
Troubleshooting
Problem
Possible Causes
Corrective Action
The unit does not start
when pressing on/off
button
Water full indicators blinks and water
tank is full.
Drain the water from the water tank.
Room temperature is higher than the set
temperature.
Reset the temperature
Room temperature is lower than the
setting temperature.
Reset the temperature
Not cool enough
The doors or windows are not closed.
Make sure all the windows and doors are
closed.
There are heat sources inside the room.
Remove the heat sources if possible.
Exhaust air hose is not connected or
blocked.
Connect or clean the exhaust air hose.
Temperature setting is too high.
Reset the temperature.
Air inlet is blocked.
Clean the air inlet and filters.
The unit is noisy/loud
The ground is not level or not flat
enough.
Place the unit on a flat, level ground if
possible.
The sound comes from the flowing of
the refrigerant inside the air conditioner.
It is normal.
The compressor does
not seem to be working
The overheat protection may be
activated.
Wait 30 minutes until the temperature has
decreased, then turn on the unit again.
The remote control does
not function
Remote control signal is not detected by
the control panel.
Make sure the remote control is correctly
aimed at the control panel.
Distance too great.
The batteries are drained.
Check batteries on the remote.
CH01 code displays
Room temperature sensor failure
Check the room temperature sensor and
related circuits
CH02 code displays
Tube temperature sensor failure
Check the tube temperature sensor and
related circuits
E4 code displays
Anti-freeze protection
Restore the functions automatically once
anti-freeze protection is over.
Displays
Water tank in chassis is full
Drain the condensate and re-start the unit
ATTENTION:
When abnormal situations occur, turn off the air conditioner and unplug it from the wall outlet, then please keep in
contact with professional electrician for help or call professional customer service.