30 18-09-2007 122770 06
If RTD sensor is OK, replace Main PCB and
then adjust and re-calibrate the unit.
Otherwise, replace RTD sensor and re-
calibrate the unit.
Error: The well temperature can not become stable
Error message:
-
Likely cause: Solution:
Sensor fault Check the RTD sensor.
Disconnect the sensor from the PCB.
Check the leak resistance from the RTD
sensor. The resistance between one RTD
terminal and chassis terminal should be
more than 10 MΩ. For the ATC-650 this
should also be tested with a well
temperature above 600°C.
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