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International Comfort Products TCH230AKA1 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor whose rated resistance is directly proportioned to the amount of, or lack thereof, heat. They can tell the system control board when a temperature in increasing or decreasing. The control board must know the temp in order to do its job as it should.
Symptoms the system thermister will eventually need to be replaced
- Main blower may fail in its attempt to engage full speed
- The AC and heat system may not initiate the starting sequence depending on which is the thermistor that is damaged
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