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International Comfort Products T9MPD125L20A1 Thermistor
A thermistor is a type of resistor whose rated resistance fluctuates depending on the actual temperature is perceives. The furnace or AC takes the temperature in some specific areas of the system to understand what is going on. They can tell the main board when a temperature reaches a certain point.
What are the signs that the main thermister is about to go out?
- The system may not operate because of any malfunctioning thermistor
- Main blower refuses in the attempt to engage full speed
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