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Lennox HP13-030 Thermistor
In an HVAC system, a thermistor is a certain type of resistor that has a varied resistance that is governed by heat. They convey to the circuit board when a certain temperature in increasing or decreasing. The heating and cooling system deciphers the temp throughout the whole system to make sure everything is running smoothly.
Hints your thermister will eventually need to be replaced
- Blower fan fails in the attempt to ramp up to full speed
- The system could never start up due to any one thermistor that is stuck open
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