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Lennox 13ACD-018 Thermistor
A very basic thermistor is a thermal resistor, that has a swinging resistance is directly proportioned to temperature. They can tell the system when a temperature in increasing or decreasing. The heating and cooling system deciphers the temp in a few critical areas to understand what is going on.
Subtle hints the system thermister should be replaced
- Primary blower may fail in the attempt to ramp up to full speed
- The initial sequence may never begin due to any one inaccurate thermistor
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