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Haier CPN12XH9-E Thermistor
A thermistor is a specific kind of resistor whose resistance is governed by current temperature. The heating and cooling system must know the temp in certain areas to understand what is going on. They convey to the circuit board when the temperature reaches a certain point.
Hints your all-important thermister will soon need to be replaced
- Blower fan may refuse in its attempt to ramp up to full speed
- The AC and heat system may not initiate the starting sequence due to any one inaccurate thermistor
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