Maintenance; Troubleshooting For Normal Malfunction - Gree GWH09YC-K6DNA1A Service Manual

9. Maintenance

9.1 Troubleshooting for Normal Malfunction

Note: When replacing the controller, make sure insert the wire jumper into the new controller, otherwise the
unit will display C5.
Trip of breaker or
blow of fuse
The air condi-
tioner does not
react after it is
powered ( after
the plug is
inserted, the
buzzer does not
sound and the
remote startup
has no
response)
The remote
controller does
not receive
signals (after it
is powered, the
buzzer will
sound, unless it
has
malfunction)
40
The breaker trips at once when it
is set to "ON".
The breaker trips in few minutes
when it is set to "ON".
No power
Power plug is not well plugged in
and poor connection.
Fuse of controller burnt out
The transformer connection is
loose or has bad contact or the
transformer has malfunction.
Controller is broken
Remote controller is short of power
Remote controller malfunction
Receiver loose or poor connection
Receiver is broken
Power voltage is too low
Measure insulation resistance
to ground to see if there is any
leakage.
The circuit or the part of the air
conditioner has malfunction.
They heat and break the insula-
tion and lead to short circuit or
creepage. Measure the insula-
tion resistance or eliminate the
malfunction one by one. If the
breaker itself has malfunction,
then replace the breaker.
Check power supply circuit.
Check if the plug is properly
plugged in and make the loose
contact firm.
Change controller fuse
Fasten the wiring; measure the
output voltage of the trans-
former , if it is incorrect, change
the transformer.
Check remote controller
Change batteries
First, press the manual switch
button AUTO,if there is no
response,check based on the
above methods. If it runs nor-
mally after pressing the button,
check again whether the instal-
lation position and the connec-
tion wire of the reception head
is correct. If it is correct,then re-
place the receiver or the remote
controller.
Check the voltage. If it is lower than 10% of
the rated voltage, check the cause, improve
the power supply condition and add the sta-
bilized voltage power supply.
Service Manual
Installation and Maintenance