Oven Burning Food/Undercooking? How To Replace Beko Oven Thermostat?

Troubleshooting and Replacing the Thermostat in a Beko Electric Oven

Today's repair guide will tackle thermostatic issues with cookers and ovens. It covers both standard thermostats, connected via a capillary tube and gas-filled probe, and modern electronic thermostats that use sensors and circuit boards to read temperature. It will demonstrate how to replace a thermostat (part number 26348002) on a Beko oven cooker, applicable to various makes.

Before replacing your oven thermostat, it's crucial to diagnose whether the thermostat or another element is faulty. Cookers have multiple elements (dual grill, base oven element, fan oven element) and a selector switch that combines these for different cooking functions. A malfunctioning element can mimic thermostat issues, causing uneven cooking.

It will also provide tips on using the selector switch correctly: Always select the cooking function before setting the thermostat. Incorrect use can damage the cooker.

This video specifically demonstrates a Beko CIMYA91B cooker oven but it is valid for all these brands:

Altus, Arcelik, Arctic, Atlas, Aya, Blomberg, Cylinda, Davoline, Defy, Elektra Bregenz, Eskimo, Euromaid, Faber, Federal, Flavel, Grundig, Haka, Howden, Lamona, Leisure, Logik, Magic, Montpellier, Perfect, Point, Privileg, Rotenzo, Stoves, Winstar

Understanding Your Oven’s Thermostat

The thermostat in your oven plays a crucial role in regulating the temperature. There are two main types of thermostats you might come across:

1. Standard Thermostat: This type uses a capillary tube filled with gas. As the oven heats up, the gas expands and triggers the contacts in the thermostat.
2. Electronic Sensor: Modern ovens often use an electronic sensor that reads the temperature in ohms. This information is then relayed to the oven's circuit board, which interprets the ohm reading and regulates the temperature accordingly.

Diagnosing Beko Oven Thermostat Problems

To diagnose a potential thermostat problem, you will need to start by observing the thermostat light. This light should cycle on and off as you adjust the temperature. If the light remains on continuously, it may indicate a faulty thermostat. In contrast, if the light goes off at low temperatures but the oven still doesn't heat properly, a broken element could be the issue.

Next, you should consider testing the oven elements. Your oven contains several elements, including a dual grill element, a base element, and a fan oven element. These elements work in different combinations to achieve the desired cooking function. If any of these elements are faulty, it can result in uneven cooking and mimic thermostat issues.

Another important aspect to check is the correct use of the selector switch. Always set the selector switch before adjusting the thermostat. Incorrect use can cause the contacts to wear out prematurely, leading to problems that appear to be thermostat-related.

Removing Your Beko Oven

Before you begin any work on your oven, it’s crucial to disconnect it from the power supply. Turn off the appropriate fuse or circuit breaker to ensure there is no electricity flowing to the oven.

To make the oven easier to handle, you can start by removing the oven door. For older models, you’ll need to release the hinges. For newer models, simply press the catches on each side and slide the door off. Removing the door not only reduces the weight but also prevents any damage to the glass.

Once the door is off, you can begin extracting the oven. You should also remove the screws that secure the oven to the cabinet. Carefully slide the oven out, making sure not to strain the cables. At this point, you can watch our video to remove your oven safely.

Accessing & Testing Beko Oven Thermostat

Now that the oven is out of the way, you can now access the top panel. Unscrew and lift off the top panel to reveal the thermostat and other components. Take a moment to familiarize yourself with the layout. You should be able to identify the base element, fan oven element, grill element, cutout thermostat, fan motor, light fitting, and cooling fan. That's why I suggest you take a photo of the layout.

To test the thermostat, start with a continuity test. Set your multimeter to continuity and attach one probe to the thermostat's feed in and the other to the feed out. Then, you should turn the thermostat on and off to check if the contacts open and close as they should. If you don't have a one, you can get a new multimeter via our affiliate link.

For a live test, plug the oven back in and set it to manual mode. You should measure the voltage across the thermostat terminals. However, please make sure that the thermostat is regulating power correctly to the elements. If the thermostat is working properly, it should control the flow of electricity to the elements, turning them on and off as the temperature changes.

Replacing the Thermostat

If the thermostat is faulty, you’ll need to replace it (part number 26348002). Begin by disconnecting the wires and unscrewing the old thermostat. Carefully extract the capillary tube and probe. When installing the new thermostat, make sure the capillary tube is positioned correctly without any kinks. And then, simply reconnect the wires and secure the probe in its original location.

After installing the new thermostat, you can reassemble the oven by reversing the disassembly steps. Make sure all screws are tightened, and the insulation is intact. Finally, reconnect the power and test the oven to check it heats correctly and the thermostat cycles as expected.

By following this guide, you should be able to diagnose and replace a faulty thermostat in your Beko oven. If you have further questions or need replacement parts feel free to contact us with your oven’s full model number and a description of the problem.