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International Comfort Products H9MPD080J16B1 Thermistor
A thermistor is a specific kind of resistor whose resistance depends on the amount of, or lack thereof, heat. The system control board takes the temperature in certain areas to do its job correctly. They notify the circuit board when the temperature has been reached.
Red flags of a bad system thermister
- The whole HVAC system may not even start due to any one thermistor that is stuck open
- The blower could refuse in its attempt to begin full speed blowing
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