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International Comfort Products PGMD42G0606 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor which has a resistance that is governed by the amount of, or lack thereof, heat. The main control board must know the temp in certain areas to know what to do next. They notify the circuit board when a temperature has been reached.
Subtle cues of a weak thermister
- The blower could fail in its attempt to engage full speed
- The system may not function due to a bad thermistor
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