106
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
Heat-
ing
LED
D40/D5
D41/D6
D42/D16 D43/D30
System high
pressure
protection
E1
OFF 3S
and blink
once
o
¶
¶
¶
Cooling dehu-
midifying ex-
pect the indoor
fan motor is
running, others
will stop to run.
Heating all stop
running
1. Refrigerant
is too much; 2.
Poor heating
exchanging for
units (in-
cluding heat
exchanger is
dirty and unit
heating radiat-
ing ambient is
poor); Ambient
temp is too
high
Anti-freez-
ing protec-
tion
E2
OFF 3S
and blink
twice
n
o
n
o
Cooling de-
humidifying
compressor
outdoor fan
motor will stop
running, indoor
fan motor will
keep running
1. Poor indoor
unit air return-
ing; 2. Indoor
fan motor
rotating speed
abnormal; 3.
Evaporator is
dirty
Compressor
air exhaust
high temp.
protection
E4
OFF 3S
and blink
4 times
n
o
n
¶
Cooling dehu-
midifying ex-
pect the indoor
fan motor is
running, others
will stop to run.
Heating all stop
running
Please refer to
trouble shoot
(air exhaust
protection,
overload)
AC overload
protection
E5
OFF 3S
and blink
5 times
o
n
¶
o
Cooling dehu-
midifying ex-
pect the indoor
fan motor is
running, others
will stop to run.
Heating all stop
running
1. Power supply
is stable, fluc-
tuation is too
much; 2. Power
supply is too
low, overload is
too much