How Replace The Flame Sensor On A Gas Dryer That Isn'T Drying

Posted on: 3 May 2016

A gas dryer gets your laundry dry using processes similar to how your furnace heats your house. The dryer has its own burner assembly to facilitate the heat needed for drying. A problem with the flame sensor in that assembly can make the dryer think there's no need for any more heat before any heat has even started happening. If your dryer has suddenly stopped heating completely, the problem might be in the flame sensor.

Replacing the flame sensor isn't hard if you can lift a few dryer parts away and own a few basic tools.

What You Need:

  • Screwdriver
  • Pliers
  • New flame sensor

Step 1: Disassemble the Dryer

Unplug the electrical cord for the dryer, turn off the gas supply shutoff valve, and then scoot the dryer out away from the wall and washer so you have full access to the front of the dryer.

Remove the screws on the rear of the control panel to release the panel. Open the dryer door and locate the screws that are in the top of the doorframe that hold the frame and the top of the dryer together. Use a screwdriver to remove those fasteners.

Locate the tabs holding the control panel onto the top of the dryer. Push in on those tabs while lifting up on the panel to unhook the panel from the top of the dryer. You can now pull the top of the dryer off the unit. Place the top somewhere out of your way but accessible for the reassembly process.

Lean into the area where the dryer is now open from the top removal. Locate and remove the screws holding the front panel onto the dryer's body. Lift the front panel up to remove from its track. Swing the panel off to the side of the dryer and allow the panel to stand there while you work. Note that the panel is still attached via wires so you can't completely remove the panel.

Step 2: Remove the Old Flame Sensor and Install the New Sensor

Locate the flame sensor in the bottom portion of the opening that was behind the front panel. Remove the wires attached to the flame sensor using a pair of pliers to help pop the wires from the terminals. Use a screwdriver to remove the mounting screws, holding the flame sensor in place on the burner housing. Remove the sensor and discard the sensor.

Install the new flame sensor using the mounting screw holes on the sensor and the burner housing as a guide. Fasten the mounting screws into place to secure the sensor. Attach the wires by firmly pressing each wire end into the appropriate terminal until you hear a snap.

Step 3: Put the Dryer Back Together

Swing the front panel back into position and lift the panel onto its track. Attach the mounting screws to hold the panel in place. Make sure the panel is fully snapped into place before you secure.

Place the top back on the dryer by first aligning the piece with the tabs on the control panel. Press the tabs into place as you slide the top towards the rear of the dryer. Reattach the screws in the dryer's doorframe to secure the top to the body of the dryer. Use your screwdriver to install the mounting screws for the rear of the control panel.

Scoot the dryer back into position and plug into the electrical socket. Conduct a test run with a damp cloth inside and see if the heating problem persists. Still not heating correctly? Call in an appliance repair service, such as Giddens Services Ltd.