Maintenance; Error Code - Gree GWC36LB-D3NNB2A Service Manual

Service Manual

9. Maintenance

9.1 Error Code

Malfunction
No.
Name
Indoor ambient
temperature
1
sensor is open/
short- circuited
Indoor evaporator
temperature
2
sensor is open/
short-circuited
Outdoor ambient
temperature
3
sensor is open/
short-circuited
Outdoor
condenser
4 temperature
sensor is open/
short-circuited
Outdoor
discharge
5 temperature
sensor is open/
short-circuited
Installation and Maintenance
Display Method of Indoor Unit
Indicator lamp
(During blinking, ON for 0.5S
and OFF for 0.5 S)
Error Code
COOL HEAT
Operation Lamp
Lamp Lamp
OFF
3S and
F1
blinks
once
OFF
3S and
F2
blinks
twice
OFF
3S and
F3 blinks
3
times
OFF
3S and
F4 blinks
4
times
OFF
3S and
F5 blinks
5
times
A/C Status
The unit will stop operation
as it reaches the temperature
1. The wiring terminal between indoor ambient temperature sensor and
point. During cooling and drying
controller is loosened or poorly contacted;
operation, except indoor fan
2. There's short circuit due to trip-over of the parts on controller;
operates, other loads （such as
3.Indoor ambient temperature sensor is damaged (Please check it by
compressor, outdoor fan, 4-way
referring to the resistance table for temperature sensor)
valve） stop operation; During
4. Main board is broken.
heating operation, the complete
unit stops operation.
The unit will stop operation
as it reaches the temperature 1. The wiring terminal between indoor evaporator temperature sensor
point. During cooling and drying and controller is loosened or poorly contacted;
operation, except indoor fan 2. There's short circuit due to the trip-over of the parts on controller;
operates, other loads stop 3.Indoor evaporator temperature sensor is damaged (Please check it
operation; During heating by referring to the resistance table for temperature sensor)
operation, the complete unit 4. Main board is broken.
stops operation.
The unit will stop operation
1. The wiring terminal between outdoor ambient temperature sensor
as it reaches the temperature
and controller is loosened or poorly contacted;
point. During cooling and drying
2. There's short circuit due to the trip-over of the parts on controller;
operation, compressor stops
3.Outdoor ambient temperature sensor is damaged (Please check it by
and indoor fan operates; During
referring to the resistance table for temperature sensor)
heating operation, the complete
4. Main board is broken.
unit stops operation.
The unit will stop operation 1. The wiring terminal between outdoor condenser temperature sensor
as it reaches the temperature and controller is loosened or poorly contacted;
point. During cooling and drying 2. There's short circuit due to the trip-over of the parts on controller;
operation, compressor stops 3.Outdoor condenser temperature sensor is damaged (Please check it
and indoor fan operates; During by referring to the resistance table for temperature sensor)
heating operation, the complete 4. Main board is broken.
unit stops operation.
The unit will stop
operation as it reaches the 1. The wiring terminal between outdoor discharge temperature sensor
temperature point. During and controller is loosenedor poorly contacted;
cooling and drying operation, 2. There's short circuit due to the trip-over of the parts on controller;
compressor stops and indoor 3. Outdoor discharge temperature sensor is damaged. (Please check it
fan operates; During heating by referring to the resistance table for temperature sensor)
operation, the complete unit 4. Main board is broken.
stops operation.
Possible Causes
(For specific maintenance method, please refer to the following
procedure of troubleshooting)
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