Haier GE APPLIANCES Connect Series, Service Manual

Page: 28 / 102

CONNECT SERIES SERVICE MANUAL
26
ENGLISH
Troubleshooting
“F4” Discharge 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
“F6” ODU Tube 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
No
No
Yes
Yes
Yes
Yes
No
No
Replace the
temperature
sensor
Replace the
temperature
sensor
Start
Start
Malfunction of discharge
temperature sensor
Malfunction of tube
temperature sensor
Check if the discharge
temperature sensor on main
board is inserted on the
socket correctly
Check if the tube
temperature sensor on main
board is inserted on the
socket correctly
Disconnect the
temperature sensor
and measure if its
resistance is normal
Disconnect the
temperature sensor
and measure if its
resistance is normal
Replace the
outdoor main
board
Replace the
outdoor main
board
Correctly insert
the temperature
sensor on the
socket
Correctly insert
the temperature
sensor on the
socket
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.