Simple devices called flame sensors are used to ensure that the gas valve only opens when there is fire, preventing potentially risky gas accumulation. One of the most common furnace flame sensor issues includes the gas furnace abruptly shutting down after being switched on and doing so numerous times before the furnace shuts down completely. Fortunately, homes frequently have flame sensor problems, which don’t often necessitate costly furnace repair. The problem might be resolved with a simple cleaning. Video Source The user should identify the sensor in the furnace assembly and turn off the furnace’s electricity before doing anything else.…