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International Comfort Products PGMD36H090C Thermistor
A thermistor is a thermal resistor, that has a varied resistance that varies depending on the heat. They tell the main board when a certain temperature has been reached. The furnace or AC reads the temperature in certain areas to do its job correctly.
What warnings are present when my all-important thermister needs replacing?
- The main fan may refuse in its attempt to engage full speed
- No component could possibly not even begin due to a thermistor that is stuck open
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