How to Change the Flame Sensor on My Comfortmaker Furnace


Comfortmaker makes lines of gas furnaces. Because these furnaces are powered by gas, safeguards are needed. For example, if you were turn on your furnace without a pilot flame, the furnace would fill the room with gas. To prevent this, a sensor is located next to the pilot. The sole purpose of this component is to detect a pilot light. If the sensor is broken, you can replace it yourself.

Things You'll Need

  • Phillips screwdriver
  • Find the main breaker panel in your home and flip the breaker that controls the Comfortmaker furnace circuit to the "Off" position.

  • Remove the screws on the front panel of your Comfortmaker furnace.

  • Remove the front panel of the furnace. You can now access the heat sensor, which is mounted next to the pilot light. The heat sensor is a metal rod a few inches in length with wiring plugged into it at the base.

  • Unplug the wiring from the base of the heat sensor.

  • Remove the screw holding the sensor in place and remove the sensor.

  • Fit a new sensor in the furnace and replace the wiring and screw.

  • Replace the front panel of the Comfortmaker furnace.

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