114
Fault Displays
Models GWH30LB-D3DNA3E & GWH24LB-D3DNA3E
Malfunction
Name
Indoor Unit
Outdoor Unit
A/C Status
Possible Causes
Dual-8
Code
Display
Indicator Display (during blink-
ing, ON 0.5s and OFF 0.5s
Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Operation
Cool
Heating
Yellow
Red
Green
High pressure
protection of
system
E1
OFF 3S
and blink
once
During cool-
ing and drying
operation, except
indoor fan oper-
ates, all loads stop
operation. During
heating operation,
the complete unit
stops
Possible reasons:
1. Refrigerant was
superabundant;
2. Poor heat ex-
change (including
filth blockage of
heat exchanger
and bad radiating
environment);
Ambient tempera-
ture is too high
Antifreezing
protection
E2
OFF 3S
and blink
twice
Off 3S
and blink
3 times
During cooling
and drying oper-
ation, compressor
and outdoor fan
stop while indoor
fan operates
1. Poor air-return
in indoor unit;
2. Fan speed is
abnormal; 3. Evap-
orator is dirty
System block
or refrigerant
leakage
E3
Off 3S
and blink
3 times
Off 3S
and blink
9 times
The Dual-8 Code
Display will show
E3 until the low
pressure switch
stop operation
1. Low-pressure
protection; 2.
Low-pressure pro-
tection of system;
3. Low-pressure
protection of com-
pressor
High
discharge
temperature
protection of
compressor
E4
Off 3S
and blink
4 times
Off 3S
and blink
7 times
During cooling
and drying oper-
ation, compressor
and outdoor fan
stop while indoor
fan operates.
During heating
operation, all
loads stop.
Please refer to
the malfunction
analysis (discharge
protection, over-
load)
Overcurrent
protection
E5
Off 3S
and blink
5 times
Off 3S
and blink
5 times
During cooling
and drying oper-
ation, compressor
and outdoor fan
stop while indoor
fan operates.
During heating
operation, all
loads stop.
1. Supply voltage
is unstable; 2. Sup-
ply voltage is too
low and load is too
high; 3. Evapora-
tor is dirty