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International Comfort Products PGAD47D1K5 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor whose resistance is governed by actual temperature is perceives. The main control board interprets the temperature in certain areas to understand what is going on. They convey to the system control board when the temperature reaches a certain point.
Indications your thermister should need replacing
- The entire system may not initiate the starting sequence because of any failed thermistor
- Blower fan could fail in its attempt to engage full speed
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