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How do I replace a Thermal Fuse in a Gas Wall Oven?

A safety gas valve and glow-bar oven igniter are included in most gas ovens. The components are connected in an electrical circuit. The safety gas valve opens when the glow-bar oven igniter is sufficiently hot to safely ignite the gas. If the oven igniter doesn't glow or isn't hot enough to open the gas valve, you should replace it. There is a separate igniter for the bake burner and the Broil burner in some ovens.

A thermal switch protects the oven from overheating.

The bake element at the bottom of the oven and the broil element at the top of the oven provide heat for baking and broiling in an electric oven. If the oven isn't heating properly, you should replace them.

Follow these steps to fix your issue:

  1. Disconnect electrical power.

    The wall oven needs to be completely disconnected from electrical power.

  2. Remove the wall oven from the cabinet.

    Pad the surface of the table with a towel or cardboard in front of the oven to protect it. The oven is secured to the sides of the cabinet by mounting screws. The cabinet has an oven in it. If you don't disconnected the power supply wiring from the junction box for the wall oven, you will have slack in the electrical conduit. Lift the oven out of the cabinet and put it on the table in front of it. You can use the installation manual to guide you in this step.

  3. Remove the outer back panel.

    The mounting screws that secure the outer back panel to the oven frame need to be removed first. Remove the last of the top screws and press on the outer panel to prevent it from falling. Set aside the outer back panel.

  4. Remove the thermal fuse.

    (not-been-paraphrased) Disconnect the wires from the thermal fuse. Remove the mounting screws from the thermal fuse. Remove the existing thermal fuse and set it aside for disposal.

  5. Install the new thermal fuse.

    Attach the mounting screw holes to the back of the oven. The mounting screws should be inserted and tightened firmly. Push the wires onto the terminals when you position them. Push the female spade connections all the way down.

  6. Reattach the back panel.

    The mounting screw holes need to be lined up so that the outer back panel is on the oven. Attach the mounting screws at the top of the panel.

  7. Reinstall the oven.

    Lift the oven into the cabinet using someone's help. The oven cabinet has mounting screws on it that hold the oven in place.

  8. Turn on power to the oven.

    To restore electrical power, you need to reset the house circuit breakers.

  9. Shut off the electricity and gas.

    Shut off the oven's power at the breaker panel. The gas shut-off valve must be turned off.

  10. Remove the bottom panel.

    Remove the oven racks if the oven interior is cool to the touch. The back of the oven panel has screws. Lift the back of the panel and push it back to open the oven panel. If you want to grasp the sides of the panel, push down on the front corner of the bottom panel. The bottom oven panel needs to be worked on. If you can't complete the repair because the door gets in your way, remove the door and follow the instructions in your owner's manual. Lift the door off the oven. The door should be on a pad.

  11. Remove the screws that hold the bracket.

    The igniter has holes in it that overlap with the burner. The igniter is held on the burner by a pair of screws.

  12. Disconnect the wire harness.

    (not-been-paraphrased) Detach the igniter plug from the wire harness by releasing the locking tabs on the connector. Pull the igniter out of the oven and set it aside for disposal. Tip: You may need to pull a wall oven from the cabinet to reach the plug for the bake igniter from behind the oven. Have a helper assist you when pulling the appliance out of the cabinet.

  13. Connect the new igniter.

    When plugging the igniter into the wire harness, be careful not to touch the new igniter carbide electrode. Premature failure can be caused by oil from your fingers. If the plug on the new igniter doesn't fit the original wire, use wire cutter to remove it. Attach ceramic wire nuts with insulation from the wires.

  14. Attach the igniter to its bracket.

    The mounter's holes should line up with the igniter's holes. Put the screws in and tighten them. The wires are in the way of the burner. The igniter needs to be positioned so that the holes in the burner are not overlap.

  15. Reinstall the bottom panel.

    Put the oven panel in place. The oven rack should be put into the oven.

  16. Turn on the gas and electricity.

    The oven has a gas supply shut-off valve. The oven circuit breaker is located at the breaker panel.

Time required: 60 minutes.

You would need the following tools: 1/4-inch nut driver, phillips screwdriver, work gloves.

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