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International Comfort Products PA5524AKA2 Thermistor
A thermistor is a certain type of resistor whose rated resistance is contingent on the temperature at its location. The HVAC system takes the temperature throughout the whole system to know what to do next. They can tell the HVAC system when a temperature reaches a certain point.
Symptoms your thermister will eventually need to be replaced
- The AC and heat system may not function because of any thermistor that is malfunctioning
- Main blower may refuse in its attempt to ramp up to full speed
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