How to Change an Oven Thermostat

Jul 25, 2023, 17:40pm

An oven thermostat is used to regulate the temperature of the appliance. This button is plugged into a small box, connected to electrical cables.

If your oven heats too hot or not enough, if you can no longer cook your food as you wish, the fault is probably due to your appliance’s thermostat.

The thermostat knob is located on the front of the oven: it is an adjustment button with graduations in degrees Celsius (or in units).

The thermostat is a crucial part of your oven, regulating and maintaining the temperature you set for cooking. If it becomes faulty or inaccurate, your cooking times and temperatures may be off, potentially leading to undercooked or overcooked meals. Fortunately, replacing an oven thermostat is a manageable task for those comfortable with home appliance repair. This guide provides a general overview of the process.

Disclaimer: This task involves working with electrical components, which can be dangerous if not done correctly. If you are uncomfortable or uncertain about any part of the process, consider hiring a professional.

How to Change an Oven Thermostat

Tools You Might Need

  1. New oven thermostat (make sure it’s compatible with your oven model)
  2. Screwdriver (usually a Philips)
  3. Needle-nose pliers

Step-by-Step Guide

Step 1: Disconnect the Power

Safety first! Ensure your oven is unplugged and disconnected from the power source. This step is essential to avoid the risk of electrical shock.

Step 2: Access the Back of the Oven

Depending on your oven design, you may need to move the oven away from the wall to access the back panel.

Step 3: Remove the Back Panel

Using your screwdriver, unscrew and remove the back panel to expose the thermostat and its connections.

Step 4: Remove the Knob and Thermostat

Locate the thermostat dial on the front of your oven and remove it. You should be able to pull it straight off. Next, remove the screws securing the thermostat to the control panel and gently pull it out, careful not to disconnect any wires yet.

Step 5: Take a Picture of the Wiring

Before disconnecting any wires, take a picture of the current wiring setup. This will serve as a reference when it’s time to connect the new thermostat.

Step 6: Disconnect the Old Thermostat

Use your needle-nose pliers to disconnect the wires from the old thermostat. Next, locate the capillary tube – a thin, flexible tube that extends from the thermostat into the oven. Carefully pull it out of the oven cavity.

Step 7: Install the New Thermostat

First, guide the capillary tube of the new thermostat back into the oven cavity, following the same path as the old one. Next, using your picture as a reference, connect the wires to the new thermostat with your needle-nose pliers. Ensure the connections are secure.

Step 8: Secure the New Thermostat

Screw the new thermostat into the control panel, then push the thermostat knob back onto the stem.

How to Change an Oven Thermostat

Step 9: Replace the Back Panel

Once the new thermostat is installed and connected, replace the back panel of the oven and secure it with the screws you removed earlier.

Step 10: Restore Power and Test

Plug the oven back into the power source and turn it on. Set it to a specific temperature and use an oven thermometer to check if the oven reaches and maintains the correct temperature.

In conclusion, while changing an oven thermostat requires some familiarity with appliance repair, it can be a DIY-friendly project for those willing to take the task on. Always prioritize safety and ensure the replacement thermostat is the correct type for your specific oven model. If you’re unsure or uncomfortable performing this task, however, it’s always best to call in a professional.