furnace flame sensor, flame sensorWith summer only about over and the arrival of fall around the corner, you need to exist certain your furnace is in working order. When the furnace switches on, y'all may discover that information technology only runs for a few seconds before shutting off. One possible cause may be a dirty furnace flame sensor.

What Is a Furnace Flame Sensor?

The flame sensor is a sparse metallic rod located on the burner assembly and in front of the pilot flame. The furnace flame sensor determines whether a flame is present when the gas is on. Without the sensor, the pilot calorie-free could go out, and the furnace could emit harmful gas.

The sensor acts as a safety device. When it detects that the flame isn't on, it shuts down the unabridged unit of measurement to prevent dangerous gas emissions.

Signs of a Dirty Flame Sensor

The flame sensor tin become corroded due to carbon buildup from the flame. This can crusade the sensor to fail. If the burner light goes out within seconds of switching on the unit, this is a telltale sign of a muddy sensor. If you lot run across soot clearly covering the sensor, then information technology'due south time for a cleaning.

Cleaning the Sensor

Unless you are completely comfortable tinkering with a furnace, we suggest leaving the cleaning to a professional person HVAC maintenance crew.

If you have plenty know-how, then begin by shutting off the furnace. Flip the toggle switch, or shut it off via the home'south breaker box. Adjacent, remove the sensor by unscrewing the attached hex-head screw. Remove the soot by gently scrubbing the surface with sandpaper or a wire brush.

We Restore the Furnace Flame Sensor

Nosotros maintain heating and air conditioning units. If your furnace is acting up, give All Points Heating a telephone call. A problem could lie in the sensor or it might be elsewhere. We volition clean the furnace flame sensor if it's due for maintenance.

Residential Furnace Maintenance

Serving customers from Arlington to Renton and Bellevue to Shoreline, including Seattle, Redmond, Bothell, Edmonds, Lynnwood, Everett, Marysville, Mill Creek, Woodinville, Kirkland, Mercer Isle and the surrounding surface area.