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Carrier 38EZG042 Thermistor
A very basic thermistor is a certain type of resistor whose rated resistance varies depending on the amount of, or lack thereof, heat. They inform the HVAC system when the temperature reaches a certain point. The furnace or AC needs to know the temperature in several different areas to be sure everything is going well.
Major indications of a poorly working system thermister
- The main fan may fail in its attempt to ramp up to full speed
- The heating and AC system may not even begin to function depending on which is the broken thermistor
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Before buying or purchasing do your best and cross-check the correct model and also make a visual comparison in order to be sure the correct thermistor is being ordered. There is no need to replace the part all by yourself. Hire a pro in your town or city to do the job for you.
Feel free to download your manual for help.
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