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Trane PTED120 Thermistor
A very basic thermistor is a thermal resistor, whose resistance changes as it depends on current temperature. The main control board reads the temperature in order to understand what is going on. They inform the circuit board when a certain temperature reaches a certain point.
Simple signals your all-important thermister is in dire straights
- Primary blower fails in the attempt to ramp up
- The heating and cooling system may not even start due to any one failed thermistor
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Before buying or purchasing a new Trane PTED120 replacement part do your best and double check the correct model and also make a visual comparison in order to be sure the correct thermistor is the one being purchased. If you are unsure about the installation of the new thermistor on your own then it may be wise to contact a professional to do the work for you.
Feel free to download your manual for help.
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