Gree GWHN09AANK3A1A - Troubleshooting and Failure Analysis; Startup and Response Issues

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9
Failure and analysis
Note: When replacing the controller, make sure insert the wire jumper into the new controller, otherwise the
unit display C5
Trip of breaker or blow
of fuse
Th e bre ak er t ri ps a t on c e w h en i t
is
set to "ON".
Measure
insulation resistance to ground to see
if
there is any leakage.
The
breaker trips in few minutes
when
it is set to "ON"
The circuit or the part of the air conditioner has
malfunction. They heat and break the insulation
and lead to short circuit or creepage. Measure
the insulation resistance or eliminate the malfunc-
t i o n o n e b y o n e . I f t h e b r e a k e r i t s e l f h a s
malfunction, then replace the breaker.
No pow er
Che ck po wer s upp ly ci rcu it.
Power
plug is not well plugged in and poor con-
nectio
n
Check
if the plug is properly plugged in and
make the loose contact firm.
Fuse
o f control l er burnt ou t
Chan g e
con t roll e r fu se
The transformer connection is loose or has bad
contact
or the transformer has malfunction
Fasten
the wiring; measure the output
v o l t a g e
o f t h e t r a n s f o r m e r , i f i t i s
incorrect,
change the transformer
Co n tr ol le r is b ro ke n
Check remote controller
The
air conditioner
does
not react after
it
is powered ( after
the plug is inserted,
the
buzzer does
not sound and the
remote startup has
no
respon s e)
p
u
t
ra
ts
ton
na
c
reno
i
tidn
oc
riA
The remote controller
does
not receive
signals
(after i t is
powered,
the buzzer
will
sound, unless it
has
malfunction)
Powe r
volt a ge i s too l ow
Rec eiv er
is br oke n
Receiv e r loose o r poor con nectio n
Re mo t e c on tr ol le r ma lf un ct io n
Remo te c ont r oll e r i s sh ort of p ower
Ch a n g e bat te r ie s
First, press the manual switch button AUTO,
if
there is no response,check based on the
above
methods. If it runs normally after
pressing
the button,check again whether the
installation
position and the connection wire
of
the reception head is correct. If it is
correct,then
replace the receiver or the re-
mote
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 stabilized voltage
power supply.
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