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Trane PTHD090 Thermistor
A thermistor is a thermal resistor, that has a varied resistance that fluctuates depending on the temperature at its location. The furnace or AC takes the temperature in certain areas to be sure everything is going well. They can tell the heating and cooling system when a certain temperature reaches a certain point.
What warnings are present when my all-important thermister is about to stop working?
- The system could possibly not even begin because of the thermistor that is malfunctioning
- Blower fan fails in its attempt to ramp up
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Before buying or purchasing any Trane PTHD090 replacement part, do your due diligence and double check the correct model and also make a visual inspection so that you are positive that the correct thermistor is the one being purchased. There is no rule that says you have to install the replacement part alone. Hire someone with experience in your town or city to hire and install the part for you.
Feel free to download your manual for help.
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