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Lennox CB28UH-030 Thermistor
A very basic thermistor is a special kind of new age resistor that has a fluctuating resistance that is dependent on the temperature at its location. They notify the system when a temperature in increasing or decreasing. The main control board takes the temperature in a few critical areas to be sure everything is going well.
Symptoms your all-important thermister should be replaced
- The whole HVAC system may not initiate the starting sequence due to any one thermistor that is malfunctioning
- Blower fan could fail to begin to ramp up the airflow
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If you decide on picking up or ordering, do your due diligence and double check the model number and also make a visual comparison so that you are positive that the correct replacement thermistor is the one being purchased. If you are unsure about the properly replacing the new thermistor on your own then it would be in your best interest to find a professional in your area to do the replacement of the part.
Feel free to download your manual for help.
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