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Lennox XP19-048 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor whose rated resistance changes as it depends on temperature. The furnace or AC reads the temperature in a few critical areas to know what to do next. They tell the main board when a certain temperature has been reached.
Key signs of a defective all-important thermister
- The system may never start up due to any one bad thermistor
- The main blower could refuse to begin to get up to full speed
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If you decide on picking up or ordering any Lennox XP19-048 replacement part do your best and make sure of the model number as well as make a visual inspection in order to be sure the correct thermistor is the one being purchased. It can be quite simple to replace a thermistor on your Lennox XP19-048 so long as you know how to and have the time and tools to do the job.
Feel free to download your manual for help.
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