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International Comfort Products C9MPD100J20A1 Thermistor
In an HVAC system, a thermistor is a thermal resistor, which has a resistance that is directly proportioned to temperature at its location. They convey to the system control board when a temperature has been reached. The furnace or AC takes the temperature in some specific areas of the system to make a decision on what needs to be done.
Easy warnings your all-important thermister will not live much longer
- The main blower could fail to begin to engage full speed
- The whole system may not even start due to any one improperly set thermistor
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