Flashing Led Primary Judgement - Gree GJC07AJ-D6DRNC2A Service Manual

9. Maintenance
Service Manual

9.2 Flashing LED Primary Judgement

Malfunction Dual-8
No.
Name
Display
High pressure
1 protection of
system
Anti-freezing
2 protection for
evaporator
System block or
3 refrigerant
leakage
High
discharge
4 temperature
protection of
compressor
Overcurrent
5
protection
Communication
6
Malfunction
High
temperature
7
resistant
protection
EEPROM
8
malfunction
Limit/
decrease
frequency
9
due to high
temperature
of module
Installation and Maintenance
Display Method
Indicator Display (during
blinking, ON 0.5s and OFF
Code 0.5s)
Operation Cool
Indicator Indicator
OFF 3s
E1 and blink
once
OFF 3S
E2 and blink
twice
OFF 3S
E3 and blink
3 times
OFF 3S
E4 and blink
4 times
OFF 3S
and blink
E5
5
times
OFF 3S
and blink
E6
6
times
OFF 3S
and blink
E8
8
times
EE
OFF 3S
EU and blink
6 times
A/C Status
Heat
Indicator
During cooling and drying
operation, except indoor fan
operates, all loads stop operation.
During heating operation, the
complete unit stops.
Not the error code. It's the status
code for the operation.
The Dual-8 Code Display will
show E3 until the low pressure
switch stop operation.
During cooling and drying
operation, compressor and
outdoor fan stop while indoor
fan operates. During heating
operation, all loads stop.
During cooling and drying
operation, compressor and
outdoor fan stop while indoor fan
operates. During heating
operation, all loads stop.
During cooling
operation,compressor stops while
indoor fan motor operates.During
heating operation, the complete
unit stops.
During cooling operation:
compressor will stop while indoor
fan will operate.During heating
operation, the complete unit stops.
During cooling and drying
OFF 3S operation, compressor will stop
and blink while indoor fan will operate;During
15 times heating operation, the complete
unit will stop
OFF 3S All loads operate normally,while
and blink operation frequency for
6 times compressor is decreased
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.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.
23