Clean Furnace Temperature Sensor

It turns out that most of the problems are caused by a clogged furnace filter or any of three easy to fix parts the igniter the flame sensor and the furnace high limit switch.

Clean furnace temperature sensor.

If cleaning your flame sensor did not work it s possible that the sensor is broken and that the furnace is operating as it should. If you re willing to risk 120 and buy all three parts ahead of time you may be able to fix your own furnace in less than an hour and save a 125 service call. Http amzn to 2xcwdbv york luxaire tempstar. The flame sensor occasionally becomes coated with residue and will prevent your furnace from lighting.

To clean a furnace start by turning off the furnace then removing the access panel on the outside of the furnace and inspecting the filter for dirt or damage every 3 4 months. In some furnaces this is easily done while with other gas furnaces the flame sensor is difficult to remove for cleaning. Hook up your multimeter in series with the flame sensor and the sensor wire and fire the furnace in a heat cycle. Common replacement flame sensors.

To fix this problem of the flame sensor not allowing the furnace to light we must clean the flame sensor. Check the flame sensor if present. Before searching for the flame sensor for removal and cleaning we recommend you turn off the power to the furnace. Remove it by pulling it down out of its bracket.

Just remove one sensor and replace it with a new sensor. Then to clean the blower assembly remove the front panel clean the. 903600 flame sensor rod with wiring harness replacement kit for nordyne intertherm furnace replaces for flame sensor part 632396 sensing rod replacement 4 7 out of 5 stars 18 12 99 12. If the filter is dirty replace it or clean it with soap and water if it s not disposable.

You may need to replace the sensor in which case you can follow these same instructions with the exception that no sanding is involved.