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International Comfort Products PH5542AKA1 Thermistor
A thermistor is a specific kind of resistor whose resistance fluctuates depending on the heat. They tell the HVAC system when a certain temperature reaches a certain point. The system must know the temp in a few critical areas to ensure that things are as they should be.
Red flags the temp-regulating thermister is dying
- Blower motor refuses to begin to begin full speed blowing
- The whole HVAC system may not initiate the starting sequence due to any one inaccurate thermistor
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