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International Comfort Products PGAA36C1K1 Thermistor
In an HVAC system, a thermistor is a thermal resistor, that has a varied resistance that will fluctuate depending on the actual temperature is perceives. They notify the system control board when the temperature in increasing or decreasing. The main control board needs to know the temperature throughout the whole system to do its job correctly.
Subtle hints the system thermister is not going to last much longer
- The AC and heat system could possibly never start because of the thermistor that is stuck open
- The main blower could never begin in the attempt to begin full speed blowing
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