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International Comfort Products PGMD18G0405 Thermistor
In an HVAC system, a thermistor is a type of resistor whose resistance depends on the heat. The system control board interprets the temperature in order to ensure that things are as they should be. They convey to the heating and cooling system when a temperature has been reached.
Signals of a failing all-important thermister
- The whole HVAC system could possibly never start depending on which is the thermistor that is malfunctioning
- Primary blower fails in the attempt to engage full speed
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