GREE U-Match 6 SERIES UNIT SERVICE MANUAL
67
Troubleshooting:
Note:
Please refer to Appendix 1 for the relation between temperature and resistance of temperature
sensor.
3.4.10 “CE” Wired Controller Temperature Sensor Error
Error display:
IDU wired controller and IDU receiver light board will display CE
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 reason:
■Poor contact between temperature sensor and terminal in mainboard interface
■Temperature sensor is abnormal
■Detecting circuit is abnormal
Troubleshooting:
Malfunction of
wired controller
temperature
sensor
Replace the
wired controller
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