Service manual

35
 10 Troubleshooting
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.
TROUBLES
POSSIBLE CAUSES
SUGGEST REMEDIES
1. Unit does not Start
when Pressing on/off
Button
P1 appears in the display window
Drain the water in the bottom tray.
Room temperature is lower than the
set temperature.(Cooling mode)
Reset the temperature.
2. Not cool enough
The windows or doors in the room 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 duct is not connected or
blocked.
Connect the duct and make
sure it can function properly.
Temperature setting is too high.
Decrease the set temperature.
Air filter is blocked by dust.
Clean the air filter.
3. Noisy or vibration
The ground is not level or not flat
enough.
Place the unit on a flat, level
ground if possible.
4. Gurgling sound
The sound comes from the flowing of
the refrigerant inside the
air-conditioner.
It is normal.
5. Power shut off at
Heating mode
The automatic over heat protection
function. When the temperature at the
air outlet exceed 70℃/158℉,the
device will stop.
Switch on again after the unit
has cool down.