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International Comfort Products GDL075N12A2 Thermistor
A very basic thermistor is a thermal resistor, whose rated resistance is solely dependent on temperature. They inform the main board when a certain temperature reaches a certain point. The HVAC system must know the temp in order to do its job as it should.
Some clues your thermister will eventually need to be replaced
- Main blower may refuse in the attempt to ramp up
- The heating and cooling system may not even begin to function due to a broken thermistor
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