R410A50Hz Universal Outdoor Series Technical Manual 4 -way Cassette Indoor Unit
36
GD Chigo Heating & Ventilation Equipment Co., Ltd.
13.Troubleshooting
Setting Change is Impossible
Symptoms
Causes
Reason and Disposal
The fan speed can not be changed
Check whether the MODE indicated
on the display is “AUTO”
When the automatic mode is
selected, the air conditioner
automatically selects the fan speed
Check whether the MODE indicated
on the display is
“DEHUNMIDIFICATION”
When dry operation is selected, the
air conditioner automatically select
the fan speed. The fan speed can be
selected during “COOL” and “FAN
ONLY”, and “HEAT”
The Transmission Indicator “+””-“ Never Comes On
Symptoms
Causes
Reason and Disposal
The remote control signal is not
transmitted even when the
ON/OFF button is pushed
Check whether the batteries in the
remote controller are exhausted
The remote control signal is not
transmitted, because the power
supply is off
The Display Never Comes On
Symptoms
Causes
Reason
The TEMP. Indicator does not come
on
Check whether the MODE indicated
on the display is “FAN ONLY”
The temperature cannot be set
during fan only operation
The Display Goes Off
Symptoms
Causes
Reason
The indication on the display
disappears af ter a lapse of time
Check whether the timer operation
has come to an end when the OFF
TIMER is indicated on the display
The air conditioner operation stops
since the set time elapsed.
The ON TIMER indicators go off
after a lapse of certain time
Check whether the timer operation
is started when the ON TIMER is
indicated on the display
When the time set to start the air
conditioner is reached.the air
conditioner will automatically start
and the appropriate indicator will
go off
The Signal Receiving Tone does Not Sound
Symptoms
Causes
Reason
No receiving tone sounds from the
indoor unit even when the ON/OFF
button is pushed
Check whether the signal
transmitter of remote controller is
properly directed to the receiver of
the indoor unit when the ON/OFF
button is pushed
Direct the signal transmitter of
the remote controller to the
receiver of the indoor unit , and
then repeatly push the ON/OFF
button twice
Buttons on the remote controller
don’t work
Press Reset button
