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International Comfort Products GPCM60K140F Thermistor
In an HVAC system, a thermistor is a special kind of new age resistor that has a fluctuating resistance that varies depending on the amount of, or lack thereof, heat. They notify the system control board when a temperature has been reached. The heating and cooling system deciphers the temp throughout the whole system to ensure that things are as they should be.
Clues your all-important thermister has to be replaced
- The initial sequence could possibly not operate due to any one thermistor that is damaged
- The main blower refuses in the attempt to engage full speed spinning
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