Part 9 Troubleshooting; Mlafunction Code; Malfunction Codes - Gree GWH09MA-K3NNA3F Service Manual

Troubleshooting
9. Troubleshooting

Malfunction Codes

Malfunction Name
No.
Indoor ambient
temperature sensor
1
is open/short-
circuited
Indoor evaporator
2 temperature sensor is
open/short-circuited
PG motor (indoor fan
3
motor) does not operate
Malfunction protection
4
of jumper cap
PG motor (indoor fan)
circuit malfunction by
5 zero cross detection
Display Method of Indoor Unit
Indicator lamp
(During blinking, ON for
Error
0.5S and OFF for 0.5 S)
Code
Operation COOL
Lamp Lamp
OFF 3S
and blinks
F1
once
OFF 3S
F2 and blinks
twice
OFF 3S and
H6 blinks 11
times
OFF 3S and
C5 blinks 15
times
OFF 3S and
U8 blinks 17
times
A/C Status
HEAT
Lamp
The unit will stop operation
as it reaches the
temperature point. During
cooling and drying
operation, except indoor
fan operates, other loads
（such as compressor,
outdoor fan, 4-way valve）
stop operation; During
heating operation, the
complete unit stops
operation.
The unit will stop operation as
it reaches the temperature
point. During cooling and
drying operation, except
indoor fan operates, other
loads stop operation; During
heating operation, the
complete unit stops
operation.
Indoor fan, outdoor fan,
compressor and electric heat
tube stop operation. 2
minutes later, 4-way valve
stops; horizontal louver stops
at the current position.
Operation of remote
controller or control panel is
available, but the unit won't
act.
Operation of remote
controller or control panel is
available, but the unit won't
act.
Possible Causes
1. The wiring terminal between indoor ambient
temperature sensor and controller is loosened
or poorly contacted;
2. There's short circuit due to trip-over of the
parts on controller;
3.Indoor ambient temperature
damaged (Please check it by referring to the
resistance table for temperature sensor)
4. Main board is broken.
1. The wiring terminal between
evaporator temperature 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.
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 unsmoothly due to
improper installation.
4. Motor is not installed properly and tightly.
5. Motor is damaged.
6. Controller is damaged.
1. There's not jumper cap on the controller.
2. Jumper cap is not inserted properly and
tightly.
3. Jumper cap is damaged.
4. Controller is damaged.
1. Controller is damaged.
sensor is
indoor
53