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International Comfort Products PGMD48G0908 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor which has a resistance that is altered by thermal temperature. They can tell the main board when a temperature in increasing or decreasing. The heating system takes the temperature in some specific areas of the system to know what to do next.
Major signs of an ailing system thermister
- The AC and heat system may not even start depending on which is the problematic thermistor
- The blower refuses in the attempt to get up to full speed
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