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SPT TN-12E Thermistor
A thermistor is a special kind of new age resistor that has a swinging resistance fluctuates depending on the temperature. The furnace or AC needs to know the temperature in a few critical areas to ensure that things are as they should be. They notify the main board when the temperature reaches a certain point.
Important clues of an ailing thermister
- The system blower fails to begin to engage full speed
- The whole system could never start up because of the thermistor that is the problematic one
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Before buying or purchasing do your best and make sure of the model number as well as make a visual inspection so that you are positive that the proper replacement thermistor is being ordered. Installation of the thermistor is a piece of cake provided you have the time and have the proper tools to get it done.
Feel free to download your manual for help.
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