When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission.
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network
Lennox G40DF-36A-070 Thermistor
A thermistor is a certain type of resistor whose resistance is solely dependent on the amount of, or lack thereof, heat. They convey to the system when the temperature in increasing or decreasing. The system needs to know the temperature in a few critical areas to understand what is going on.
Simple signals the Lennox thermister should be replaced
- The blower refuses in the attempt to ramp up
- The system may never begin due to a thermistor that is stuck open
This site contains affiliate links for which I may be compensated
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated