A flame sensor is one of the most important safety features of your furnace. This component is responsible for ensuring that your furnace doesn’t create a dangerous gas leak or explosion.

Jun 3, 2025 · Signs of a bad furnace flame sensor are: This guide explains how to troubleshoot a bad flame sensor. This part does exactly what it says – senses flame to ensure the furnace …

A flame sensor is an electronic device engineered to confirm the presence or absence of combustion within a monitored area. Its primary function is to detect the specific …

6 days ago · We’ll look at how the control board sends voltage to the rod, how the flame’s plasma carries a tiny DC current, and why a dirty or mis-positioned sensor makes the board think the …

Nov 5, 2022 · A flame-sensor is mainly used to detect & react to the occurrence of a flame/fire. Flame sensors are used in fire alarms, fire detection, drying systems, fire fighting robot, …

May 19, 2025 · A flame sensor is an electronic device designed to detect the presence of flames or fires by recognizing specific wavelengths of light emitted by flames. They trigger alarms and …

Dec 5, 2025 · A flame sensor in a furnace is a thin metal rod that detects if the burner is lit after gas flows, preventing dangerous build-up if it cannot sense the flame. If the sensor becomes …

This article delves into the intricacies of flame sensors, including their types, working principles, applications, advantages, limitations, and how to choose the right flame sensor for specific …

Aug 7, 2025 · A flame sensor is a thin, heat-resistant metal rod positioned in the burner assembly of your gas furnace. It detects the presence of a flame during the heating cycle.

Jul 4, 2025 · Explore how flame sensors work, their types, applications, and installation tips. Learn why they are vital in fire detection and industrial safety systems.