Furnaces have a lot of working parts that can run into issues, but sometimes, your furnace shuts down completely—and it’s not the heat exchanger, it’s not the blower motor. Sometimes it’s a small sensor that prevents your furnace from running even if it’s in perfect working order.
This little component is called a flame sensor, and it runs into a problem we see often when we service gas furnaces in Eugene, OR. Your flame sensor gets dirty over time, and enacts a failsafe for the safety of you and your family. Here’s what you need to know about it.