111
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
Whole unit’s
current test-
ing malfunc-
tion
U9
OFF 3S
and blink
13 times
o
n
¶
n
Cooling
dehumidifying
compressor
stop running,
Fan motor
works; Heating
all will stop
The circuit
on AP1 has
malfunction,
replace the
outdoor unit
AP1
Compres-
sor current
overcurrent
protection
P5
OFF 3S
and blink
15 times
o
¶
o
o
Cooling
dehumidifying
compressor
stop running,
Fan motor
works; Heating
all will stop
Please refer to
troubleshoot-
ing
Defrosting
H1
OFF
3S and
blink
once
Under the
heating mode,
compressor
running, in-
door/outdoor
fan motor stop
working
It is normal
function
Electrostatic
dedusting
protection
H2
OFF
3S and
blink
2times
Compressor
overload
protection
H3
OFF
3S and
blink 3
times
o
¶
¶
o
Cooling
dehumidifying
compressor
stop running,
Fan motor
works; Heating
all will stop
1. Wire ter-
minal OVC-
COMP loosen
or circuit has
problem, the
resistance of
SAT should be
lower than 1
ohm; 2. Please
refer to trou-
bleshooting
(exhaust/over-
load protec-
tion)