Haier GE APPLIANCES Connect Series, Service Manual

Page: 27 / 102

CONNECT SERIES SERVICE MANUAL
25
ENGLISH
Troubleshooting
Yes
“F2” Condenser Temperature Sensor Error
Error display:
ODU main board LED display
Error judgment condition and method:
Sample the AD value of temperature sensor through
temperature sensor detecting circuit and judge the
range of AD value, If the sampling AD value exceeds
upper limit and lower limit in 5 seconds continuously,
report the error.
Possible causes:
• Poor contact between temperature sensor and
terminal in main board interface
• Temperature sensor is abnormal
• Detecting circuit is abnormal
“F3” Outdoor Ambient Temperature Sensor Error
Error display:
ODU main board LED display
Error judgment condition and method:
Sample the AD value of temperature sensor through
temperature sensor detecting circuit and judge the
range of AD value, If the sampling AD value exceeds
upper limit and lower limit in 5 seconds continuously,
report the error.
Possible causes:
• Poor contact between ambient temperature sensor
and terminal in main board interface
• Ambient temperature sensor is abnormal
• Detecting circuit is abnormal
No
No
Yes
Yes
Yes
Yes
No
No
Replace the
temperature
sensor
Inspect if the
detecting circuit
is abnormal
Start
Start
Malfunction of outdoor coil
temperature sensor
F3 Outdoor ambient
temperature sensor error
Check if the condenser
temperature sensor on main
board is inserted on the
socket correctly
Is the terminal between
main board and temperature
sensor loose or any foreign
objects inside the terminal?
Disconnect the
temperature sensor
and measure if its
resistance is normal
If it is loosened or
there are foreign
objects, retighten it
after treatment.
Replace the
outdoor main
board
Replace the
temperature sensor
Replace the
main control
board
Correctly insert
the temperature
sensor on the
socket
Inspect if the
temperature sensor is
abnormal
Note: Please refer to Appendix 1 for
the relation between temperature and
resistance of temperature sensor.
Note: Please refer to Appendix 1 for
the relation between temperature and
resistance of temperature sensor.