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International Comfort Products HHP218GKA1 Thermistor
A very basic thermistor is a specific kind of resistor which has a resistance that is governed by current temperature. They tell the system control board when a certain temperature reaches a certain point. The main control board must know the temp throughout the whole system to do its job correctly.
Some clues the system thermister will die soon
- The blower could possibly fail in the attempt to ramp up
- The heating and AC system could possibly not even begin due to any one thermistor that is stuck open
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