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International Comfort Products GPFM48H080F Thermistor
In an HVAC system, a thermistor is a type of resistor whose rated resistance will fluctuate depending on the current temperature. The main control board takes the temperature in some specific areas of the system to make sure everything is running smoothly. They tell the HVAC system when the temperature in increasing or decreasing.
Clues to watch for to know the temp-regulating thermister has very little life left
- The whole system may never start up due to any one thermistor that is damaged
- Blower fan could possibly fail in its attempt to ramp up
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