Maintenance; Error Code List - Gree GWH12MB-K3DNE3G Service Manual

Service Manual

9. Maintenance

9.1 Error Code List

Malfunction
Dual-8
NO.
Name
Code
Display
High
pressure
1
protection of
system
Antifreezing
2
protection
In defect of
3 refrigerant
High
discharge
4 temperature
protection of
compressor
Overcurrent
5
protection
Communi-
6 cation
Malfunction
High
temperature
7
resistant
protection
EEPROM
8
malfunction
Limit/
decrease
frequency
9 EU
due to high
temperature
of module
Malfunction
10 protection of
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
E1
E2
F0
E4
E5
E6
E8
EE
C5
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 1S
operation, compressor and
and blink
outdoor fan stop while indoor
3 times
fan operates.
OFF 1S
The Dual-8 Code Display will
and
show F0 and the complete unit
blink
stops.
9 times
During cooling and drying
OFF 1S 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 1S 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
Always
indoor fan motor operates.
ON
During heating operation, the
complete unit stops.
During cooling operation:
OFF 1S compressor will stop while
and blink indoor fan will operate.
6 times During heating operation, the
complete unit stops.
During cooling and drying
OFF 1S 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
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.In defect of refrigerant;
2.Indoor evaporator temperature
sensor works abnormally;
3.The unit has been plugged up
somewhere.
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
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.
31