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International Comfort Products PGMD48H135C Thermistor
A very basic thermistor is a thermal resistor, that has a varied resistance that will fluctuate depending on the thermal temperature. They tell the heating and cooling system when a temperature in increasing or decreasing. The furnace or AC needs to know the temperature in a few critical areas to know what to do next.
Some clues of a defective all-important thermister
- The entire system could possibly not even begin because of the problematic thermistor
- The blower could possibly fail to begin to begin full speed blowing
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