Maintenance; Error Code List - Gree GWH09QB-K3DNA6G Service Manual

Service Manual

9. Maintenance

9.1 Error Code List

Malfunction
No. Dual-8
Name
Code
Display
High
pressure
1 E1
protection of
system
Antifreezing
2 E2
protection
System block
3 or refrigerant E3
leakage
High
discharge
4 temperature E4
protection of
compressor
Overcurrent
5 E5
protection
Communi-
6 cation E6
Malfunction
High
temperature
7 E8
resistant
protection
EEPRoM
8 EE
malfunction
Limit/
decrease
frequency
9 EU
due to high
temperature
of module
Malfunction
10 protection of C5
jumper cap
Installation and Maintenance
Display Method of Indoor Unit
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
operation Cool Heating
Indicator Indicator Indicator
Display Method of Outdoor
Unit
Indicator has 3 kinds of
display status and during
blinking, ON 0.5s and OFF
0.5s
Yellow Red Green
Indicator Indicator Indicator
During cooling and drying
operation, except indoor
fan operates, all loads stop
operation.
During heating operation, the
complete unit stops.
During cooling and drying
OFF 3S
operation, compressor and
and blink
outdoor fan stop while indoor
3 times
fan operates.
OFF 3S
The Dual-8 Code Display will
and
show E3 until the low pressure
blink
switch stop operation.
9 times
During cooling and drying
OFF 3S operation, compressor and
and blink outdoor fan stop while indoor
7 times fan operates. During heating
operation, all loads stop.
During cooling and drying
OFF 3S operation, compressor and
and blink outdoor fan stop while indoor
5 times fan operates. During heating
operation, all loads stop.
During cooling operation,
compressor stops while
OFF indoor fan motor operates.
During heating operation, the
complete unit stops.
During cooling operation:
OFF 3S compressor will stop while
and blink indoor fan will operate.
6 times During heating operation, the
complete unit stops.
During cooling and drying
OFF 3S operation, compressor will stop
and blink while indoor fan will operate;
11 times During heating operation, the
complete unit will stop
All loads operate normally,
while
operation frequency for
compressor is decreased
Wireless remote receiver and
button are effective, but can
not dispose the related
command
A/C status Possible Causes
Possible reasons:
1. Refrigerant was superabundant;
2. Poor heat exchange (including
filth blockage of heat exchanger
and bad radiating environment );
Ambient temperature is too high.
1. Poor air-return in indoor unit;
2. Fan speed is abnormal;
3. Evaporator is dirty.
1.Low-pressure protection
2.Low-pressure protection of
system
3.Low-pressure protection of
compressor
Please refer to the malfunction
analysis (discharge protection,
overload).
1. Supply voltage is unstable;
2. Supply voltage is too low and
load is too high;
3. Evaporator is dirty.
Refer to the corresponding
malfunction analysis.
Refer to the malfunction analysis
(overload, high temperature
resistant).
Replace outdoor control panel AP1
Discharging after the complete unit
is de-energized for 20mins, check
whether the thermal grease on
IPM Module of outdoor control
panel AP1 is sufficient and whether
the radiator is inserted tightly.
If its no use, please replace control
panel AP1.
1. No jumper cap insert on
mainboard.
2. Incorrect insert of jumper cap.
3. Jumper cap damaged.
4. Abnormal detecting circuit of
mainboard.
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