Maintenance; Error Code List - Gree 4LIV30HP230V1A Service Manual

9. Maintenance

9.1 Error Code List

No. Malfunction Name
High pressure
1
protection of system
Low pressure
2
protection of system
High discharge
3 temperature protection of
compressor
4 Overcurrent protection
Communication
5
Malfunction
High temperature
6
resistant protection
7 EEPROM malfunction
Limit/decrease
8 frequency due to high
temperature of module
Malfunction protection of
9
jumper cap
Refrigerant insufficient
10 protection, cut off
protection of refrigerant
Indoor ambient
11 temperature sensor is
open/short circuited
Indoor evaporator
12 temperature sensor is
open/short circuited
Outdoor ambient
13 temperature sensor is
open/short circuited
44
Display Method of
Indoor Unit
Dual-8 Code
Display
During cooling and drying operation, except
indoor fan operates, all loads stop operation.
E1
During heating operation, the complete unit
stops.
The Dual-8 Code Display will show E3 until the
E3
low pressure switch stop operation.
During cooling and drying operation, compressor
E4 and outdoor fan stop while indoor fan operates.
During heating operation, all loads stop.
During cooling and drying operation, compressor
E5 and outdoor fan stop while indoor fan operates.
During heating operation, all loads stop.
During cooling operation,compressor stops
E6 while indoor fan motor operates. During heating
operation, the complete unit stops.
During cooling operation: compressor will stop
E8 while indoor fan will operate. During heating
operation, the complete unit stops.
During cooling and drying operation, compressor
will stop while indoor fan will operate;
EE
During heating operation, the complete unit will
stop
EU All loads operate normally, while operation
frequency for compressor is decreased
Wireless remote receiver and button are effective,
C5
but can not dispose the related command
Cool: compressor and outdoor fan stops
operation, while indoor fan operates;
F0
Heat: Compressor, outdoor fan and indoor fan
stops operation.
During cooling and drying operation, indoor
unit operates while other loads will stop; during
F1
heating operation, the complete unit will stop
operation.
AC stops operation once reaches the setting
temperature. Cooling, drying:
F2
internal fan motor stops operation while other
loads stop operation; heating: AC stop operation
During cooling and drying operating, compressor
F3 stops while indoor fan operates; During heating
operation, the complete unit will stop operation
A/C status
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.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 it's 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.
1. Is system cooling under high humidity
environment, thus temperature difference of heat
transfer is small;
2. Check whether the big valve and small valve of
outdoor unit are opened completely;
3. Is the temperature sensor of evaporator of
indoor unit loose?
4. Is the temperature sensor of condenser of
outdoor unit loose?
5. Is the capillary or the electronic expansion
valve blocked?
6. Is refrigerant leaking?
1. Loosening or bad contact of indoor ambient
temp. sensor and mainboard terminal.
2. Components in mainboard fell down leads
short circuit.
3. Indoor ambient temp. sensor damaged.(check
with sensor resistance value chart)
4. Mainboard damaged.
1. Loosening or bad contact of Indoor
evaporator temp. sensor and mainboard terminal.
2. Components on the mainboard fall
down leads short circuit.
3. Indoor evaporator temp. sensor damaged.
(check temp. sensor value chart for testing)
4. Mainboard damaged.
Outdoor temperature sensor hasn't been
connected well or is damaged. Please check it by
referring to the resistance table for temperature
sensor)
Service Manual
Possible Causes
Installation and Maintenance