Gree GWC09AA, Инструкция по установке и обслуживанию

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GREE Service Manual GWC09AA / K5NNA6A Page 105
Error Codes, LED Flashing and Trouble Shooting
Ensure that the power input is under normal as specified with the technical details of the unit.
According to the error code, identify the possible malfunction of the unit.
No.
Malfunction
Name
Error
Code
A/C Status Possible Causes
1
Indoor ambient
temperature
sensor is open/
short-circuited
F1
The unit will stop operation as it
reaches the temperature point. During
cooling and drying operation, except
when indoor fan operates, other loads
（
such as compressor, outdoor fan, 4-
way valve
）
stop operation; During
heating operation, the complete unit
stops operation.
1. The wiring terminal between indoor ambient tempera-
ture sensor and controller is loosened or poorly con-
tacted;
2. There’s short circuit due to trip-over of the parts on
controller;
3.Indoor ambient temperature sensor is damaged
(Please check it by referring to the resistance table for
temperature sensor)
4. Main board is broken.
2
Indoor evapora-
tor temperature
sensor is open/
short-circuited
F2
The unit will stop operation as it reaches
the temperature point. During cooling and
drying operation, except when indoor fan
operates, other loads stop operation;
During heating operation, the complete
unit stops operation. 1. The wiring terminal between indoor evaporator tem-
perature sensor and controller is loosened or poorly
contacted;
2. There’s short circuit due to the trip-over of the parts on
controller;
3.Indoor evaporator temperature sensor is damaged
(Please check it by referring to the resistance table for
temperature sensor)
4. Main board is broken.
3
Outdoor ambient
temperature
sensor is open/
short-circuited
F3
The unit will stop operation as it reaches
the temperature point. During cooling and
drying operation, compressor stops and
indoor fan operates; During heating op-
eration, the complete unit stops opera-
tion. 1. The wiring terminal between outdoor ambient tem-
perature sensor and controller is loosened or poorly
contacted;
2. There’s short circuit due to the trip-over of the parts on
controller;
3.Outdoor ambient temperature sensor is damaged
(Please check it by referring to the resistance table for
temperature sensor)
4. Main board is broken.
4
PG motor (indoor
fan motor) does
not operate
H6
Indoor fan, outdoor fan, compressor and
electric heat tube stop operation. 2 min-
utes later, 4-way valve stops; horizontal
louver stops at the current position.
1.The feedback terminal of PG motor is not connected
tightly.
2.The control terminal of PG motor is not connected
tightly.
3.Fan blade rotates roughly due to improper installation.
4.Motor is not installed properly and tightly.
5.Motor is damaged.
6.Controller is damaged.
5
Malfunction pro-
tection of jumper
cap
C5
Operation of remote controller or control
panel is available, but the unit won’t act. There’s no jumper cap on the controller.
Jumper cap is not inserted properly and tightly.
Jumper cap is damaged.
Controller is damaged.
6
PG motor (indoor
fan) circuit mal-
function by zero
cross detection
U8
Operation of remote controller or control
panel is available, but the unit won’t act. 1. Controller is damaged.
7
Freeze protection
E2
During cooling and drying operation,
compressor and outdoor fan stop while
indoor fan operates. 1. Poor air-return in indoor unit;
2. Abnormal fan speed;
3. Dirty evaporator;
4. System is normal but the indoor tube temperature
sensor is abnormal, or the tube temperature sensor is
not connected well.
8
Low pressure
protection of
compressor
E3
The complete unit stops 1. The main board and display panel are not connected
well.
2. The LPP terminal on the main board is not connected
well, with the high pressure switch on the complete unit.
3. The wiring of the high pressure switch is loosened.
High pressure switch is damaged or poorly contacted.
4. Insufficient or leaking out refrigerant.
5. The LPP input is at high level.