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Lennox SPA048H4 Thermistor
A very basic thermistor is a certain type of resistor whose resistance varies depending on the heat. The furnace or AC takes the temperature throughout the whole system to make sure everything is running smoothly. They can tell the system when a temperature in increasing or decreasing.
Signs of a declining thermister
- Primary blower may fail in its attempt to ramp up
- The whole HVAC system could possibly not operate due to a inaccurate thermistor
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If you are going to be buying or ordering any Lennox SPA048H4 replacement part do your best and cross-check the model number and also make a visual inspection in order to be sure the right thermistor is being ordered. Once you have the part to install it yourself. Find a professional in your area to do the job for you.
Feel free to download your manual for help.
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