110
Fault Displays
Models GWH18MC-D3DNA3D & GWH24MD-D3DNA3D
Malfunction
Name
Indoor Unit Displaying Method
Outdoor Unit Display (LED)
A/C Status
Malfunctions
Dual-8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF 0.5s
Indicator has 3 kinds of display status and
during blinking, ON 0.5s and OFF 0.5s
Running
LED
Cooling
LED
Heating
LED
D40/D5
D41/D6 D42/D16 D43/D30
Overload
limit/de-
scending
frequency
F6
OFF 3S
and blink
6 times
n
o
¶
¶
Overload nor-
mal operation,
compressor
is running,
frequency
descending
Please refer to
troubleshooting
Over cur-
rent need
frequency
descending
F8
OFF 3S
and blink
8 times
n
n
o
n
Overload nor-
mal operation,
compressor
is running,
frequency
descending
1. Input power
supply is too low;
2. System voltage
is too high, over
is too much
Air ex-
haust over
high need
frequency
descending
F9
OFF 3S
and blink
9 times
n
n
o
o
Overload nor-
mal operation,
compressor
is running,
frequency
descending
1. Overload is
too much, ambi-
ent temp is too
high; 2. Refrig-
erant is short; 3.
Electric expan-
sion malfunction
DC bus-bar
voltage is too
high
PH
OFF 3S
and blink
11 times
o
n
o
¶
Cooling de-
humidifying
compressor
stop running,
Fan motor
works; Heat-
ing all will
stop
1. Testing wire
terminal L and
N position. If
higher than
265VAC, please
cut off the power
supply and
restart until back
to normal; 2. If
input voltage is
normal, testing
the voltage of
electrolytic
capacitor on AP1
after turn on the
unit. There may
be some problem
and replace the
AP1 if the elec-
trolytic capacitor
voltage range at
200-280V
