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International Comfort Products TCH048AKA1 Thermistor
A thermistor is a thermal resistor, which has a resistance that is altered by the amount of, or lack thereof, heat. The furnace or AC needs to know the temperature in several different areas to make sure everything is running smoothly. They tell the main board when a certain temperature in increasing or decreasing.
Some clues of an ailing system thermister
- The main blower may fail in its attempt to get up to full speed
- No component may not even start because of the damaged thermistor
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