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International Comfort Products PGAA36D1K1 Thermistor
In an HVAC system, a thermistor is a thermal resistor, whose resistance is directly proportioned to current temperature. The furnace or AC takes the temperature in several different areas to make a decision on what needs to be done. They tell the system when the temperature has been reached.
Major clues the system thermister needs to be replaced
- The initial sequence may not operate because of any thermistor that is stuck open
- The main blower may fail to begin to begin full speed blowing
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