Premium GPAC12039, Service Manual, Page: 26 / 45

24
Section 5 Trouble Shooting Guide
1. Starting Items to check
1.1 Make sure input voltage must be within the±10% range of the nominal voltage. If the
operation electric tension exceeds scope, the air conditioner may not work normally.
1.1 Make sure the indoor/outdoor communication connecting wire is correct.
This series of unit model have two indoor units, with a communication cable connected to the
outdoor unit. Please connect the indoor and outdoor connecting wire strictly according to the
circuit diagram. Air conditioning, with different type may use connecting wire of the same
specification. Please confirm that the code on connecting terminal of indoor and outdoor
connecting wire is the same with the code on connecting wire, otherwise air-condition may not
work normally.
1.3. Please confirm the indoor and outdoor unit are linked with power supply (each unit have
independent power supply).
1.4. If appear the following cases. it will not be due to malfunction of air-condition
No Cases Explanation
1
When the power plug of indoor unit
insert the socket for the first time.
sound can be heard but the
air-condition doesn't work. This means the conditioner is on power.
Press the on/off button on the remote
controller. when the air conditioner receives
the signal. it will work
2
In the cooling mode. room
temperature is above the set
temperature.
Compressor doesn't work. but the
indoor fan runs. While the air conditioner is turned off. it takes
3 minutes delay to restart it. When the air
conditioner is electrified. it's the same case.
While compressor delays 3 minutes. the air
conditioner can regulate the wind speed in
the room according to the set speed.
3
The compressor will not function
continuously in the mode of
dehumidify. In the mode of dehumidification. the work
state of compressor will be controlled
automatically according to indoor
temperature.
4
When the LED light is on. the air
conditioner does not work. The timer is in a state of timing. and air
conditioner is in readiness for action.
If the timing is cancelled. the air conditioner
will get back to work.
5
In the cooling and dehumidification
mode. it doesn't work continuously.
and the speed of indoor fan engine
slows down. Function. and indoor
engine fan electromotor speed
reduction
The interval of compressor or the slow-down
of wind speed is to protect the indoor heat
exchanger from freezing.