Temperature Sensor; Troubleshooting Instructions For Thermistor - Mitsubishi Electric PURY-(E)P200 Service Handbook

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[ IX Troubleshooting ]

2. Temperature sensor

HWE07130

Troubleshooting instructions for thermistor

START
Pull out the thermistor connector in
trouble from the board.
Measure the temperature of the thermistor
in trouble. (actual measurement value)
Check the thermistor resistor.
Compare the temperature corresponding to the
resistance measured by the thermistor and the
temperature measured by a commercially
available thermometer, and check whether
there is no difference between them.
Temperature difference
NO
Insert the connector of the thermistor
in trouble into the board, check the sensor
inlet temperature on the LED monitor,
and check the temperature difference.
Temperature difference
NO
Normal
Note 1
Note 2
Note 3
YES
Replace the thermistor
Note 4
YES
Check for contact failure.
Replace the control board.
- 262 -
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