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International Comfort Products H9MPX080J12A2 Thermistor
In an HVAC system, a thermistor is a special kind of new age resistor which has a resistance that is altered by heat. They notify the system control board when a certain temperature in increasing or decreasing. The system control board reads the temperature throughout the whole system to make a decision on what needs to be done.
Main clues your thermister is in dire straights
- The entire system may not even start depending on which is the malfunctioning thermistor
- The system blower could never begin in the attempt to engage full speed
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