Gree GWC18KG-K3DNA6A

7URXEOHVKRRWLQJ
Display Method of Indoor Unit
Indicator Display (during blinking,
ON 0.5s and OFF 0.5s)
Display Method o
f
Outdoor Unit
Indicator has 3 kinds o
f
display status and they
will be displayed
circularly every 5s.
ƑOFF ŶON ƿBlink
No.
Malfunction
Name
Dual-8
Code
Display
Operation
Indicator
COOL
Indicator
Heating
Indicator
D40 D41 D42 D43
A/C status
Possible Reasons
12
Outdoor ambient
temperature
sensor is
open/short
circuited
F3
OFF 3S
and blink
3 times
ƑƑƿ Ŷ
During cooling and drying
operating, compressor stops while
indoor fan operates; During
heating operation, the complete
unit will stop operation
Outdoor temperature sensor hasn’t been connected
well or is damaged. Please check it by referring to
the resistance table for temperature sensor)
13
Outdoor
condenser
temperature
sensor is
open/short
circuited
F4
OFF 3S
and blink
4 times
ƑƑƿ Ƒ
During cooling and drying
operation, compressor stops while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
Outdoor temperature sensor hasn’t been connected
well or is damaged. Please check it by referring to
the resistance table for temperature sensor)
14
Outdoor
discharge
temperature
sensor is
open/short
circuited
F5
OFF 3S
and blink
5 times
ƑƑƿƿ
During cooling and drying
operation, compressor will sop
after operating for about 3 mins,
while indoor fan will operate;
During heating operation, the
complete unit will stop afte
r
operating for about 3 mins.
1.Outdoor temperature sensor hasn’t been
connected well or is damaged. Please check it by
referring to the resistance table for temperature
sensor)
2.The head of temperature sensor hasn’t been
inserted into the copper tube
15
Limit/decrease
frequency due to
overload
F6
OFF 3S
and blink
for 6
times
ŶƑƿƿ
A
ll loads operate normally, while
operation frequency fo
r
compressor is decreased
Refer to the malfunction analysis (overload, high
temperature resistant)
16
Decrease
frequency due to
overcurrent
F8
OFF 3S
and blink
8 times
ŶŶƑŶ
A
ll loads operate normally, while
operation frequency fo
r
compressor is decreased
The input supply voltage is too low;
System pressure is too high and overload
17
Decrease
frequency due to
high ai
r
discharge
F9
OFF 3S
and blink
9 times
ŶŶƑƑ
A
ll loads operate normally, while
operation frequency fo
r
compressor is decreased
Overload or temperature is too high;
Refrigerant is insufficient;
Malfunction of electric expansion valve (EKV)
18
Voltage for DC
bus-bar is too
high
PH
OFF 3S
and blink
11 times
ƑŶƑƿ
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
1. Measure the voltage of position L and N on wiring
board (XT), if the voltage is higher than 265VAC,
turn on the unit after the supply voltage is increased
to the normal range.
2.If the AC input is normal, measure the voltage of
electrolytic capacitor C on control panel (AP1), if it’s
normal, there’s malfunction for the circuit, please
replace the control panel (AP1)
19
Malfunction o
f
complete unit’s
current detection
U5
OFF 3S
and blink
13 times
ƑŶƿ Ŷ
During cooling and drying
operation, the compressor will
stop while indoor fan will operate;
During heating operating, the
complete unit will stop operation.
There’s circuit malfunction on outdoor unit’s control
panel AP1, please replace the outdoor unit’s control
panel AP1.
20
Overcurrent
protection o
f
phase current
for compressor
P5
OFF 3S
and blink
15 times
Ƒ ƿ ƑƑ
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation.
Refer to the malfunction analysis (IPM protection,
loss of synchronism protection and overcurrent
protection of phase current for compressor.
21 Defrosting H1
OFF 3S
and blink
once
Defrosting will occur in heating
mode. Compressor will operate
while indoor fan will stop
operation.
It’s the normal state
22
Static dedusting
protection
H2
OFF 3S
and blink
twice
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