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International Comfort Products H8MPL100F20B1 Thermistor
In an HVAC system, a thermistor is a certain type of resistor whose resistance is altered by the amount of, or lack thereof, heat. They tell the main board when the temperature has been reached. The system control board deciphers the temp throughout the whole system to understand what is going on.
What to see if the all-important thermister is almost dead?
- The initial sequence could possibly never start due to a improperly set thermistor
- Main blower could fail in the attempt to engage full speed
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