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Frigidaire FRP77PTT2A0 Thermistor
In an HVAC system, a thermistor is a thermal resistor, whose rated resistance is dependent on the temperature. The system control board needs to know the temperature in order to be sure everything is going well. They notify the circuit board when a certain temperature in increasing or decreasing.
Simple signals the system thermister is in dire straights
- The whole HVAC system may not initiate the starting sequence due to a thermistor that has failed
- The main blower may refuse to begin to begin full speed blowing
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