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How to Repair Common Oven Parts The oven is an appliance in the kitchen that is used to cook food items. The heat generated by the oven sterilizes food and kills the majority of microorganisms. All bakers need an accurate oven thermometer. Understanding how your oven works will help improve your baking and roasting abilities and eliminate those irritated hot spots that can cause havoc with cakes, cookies and other baked products. Thermostat The thermostat is one of the most crucial components of your oven, assisting to make sure that the temperature of your food is exactly what you've set on your control panel. It could be a problem as is any other sensor or switch that is electro-mechanical. The oven may overheat or underheat, or not maintain the temperature you have set. The oven thermostat is a small strip made of two different metals bonded together. When heated by the oven, the metals expand and bend at different rates. This creates an electrical circuit. When the metal in your thermostat reaches the temperature that you set on the control panel it will shut off the power to the heater. As the oven cools down the bimetallic strip expands, re-establishing the circuit and activating the heating element. This cycle continues for a long time to maintain a constant oven temperature. The oven must be disconnected and all screws removed to diagnose the issue with the thermostat. If you have a multimeter (which is a device that detects electrical current) set it to the ohms level and then test the thermostat. If the multimeter reads zero or very close to it the thermostat is operating properly and doesn't require to be replaced. If the multimeter does not read anything, then the thermostat is faulty and must be replaced. Cooker Spare Parts recommends that you replace the thermostat with a brand new one that is the same model as the one you have. They are available through the internet or at an appliance store and can be bought at a reasonable cost. Bake Element Ovens are not complete without the bake element which provides heat to make your oven cook food. It's a simple component that transforms electricity into the high temperatures needed for baking, roasting and broiling. Heating elements are typically found in electric ovens and ranges and are either covered or concealed under the floor of the oven. In general, oven heating elements are constructed of high-resistance materials such as nickel-chromium alloy. They convert electrical energy into heat via the process of resistance which then radiates throughout the oven's interior, causing it to increase the temperature to the desired temperature for cooking different types of food. When you switch on the oven, the heating elements begin to generate heat by the high-voltage current flowing across the metal's surface. The element is a ribbon or coil (straight or corrugated) of wire, and as the electric current flows through it, it starts to increase in temperature. When the element reaches its temperature it starts to be lit up in red hot. The baked element is the primary source of heat for most oven functions. It is typically located at the bottom of the oven. Many automatic oven models also use it to clean themselves. When it starts to get hot you may be noticing that your oven doesn't warm as quickly or your food isn't fully cooked. Connect your multimeter to its red and black ports. Then, touch the probes made of steel on one end of the element to each other. The other end of the baking element against one terminal and place your hands on it. If the element feels warm, remove it and try testing it again. If not, take it off and try again. Broil Element The broil element is usually situated in the top of the oven and can provide high-temperature heat similar to grills to roast or grill food. The oven's broil setting can be ideal for quick grill meat, crisp vegetables, reheat lasagna or caramelize the top of the casserole. Similar to the bake element the broiler heating element transforms electrical energy into heat via the process of resistance. It is made up of an internal core of wires made of metal wrapped in an insulating expanded perlite product. The inside of the element is then covered with a stainless steel outer layer to shield the wires from direct contact with the oven. The three-layer design helps to reduce the temperature of the broil element, making it safer than older styles. While you are able to use any baking or broiling heating element in your oven, it is important to choose one that matches the wattage that is recommended for your oven. Using a different wattage can damage your oven or cause it to overheat. You can check the wattage of your oven and the rating of the new heating element by looking at their voltage and current ratings on the oven's control panel. Examine the resistance of your old element, and compare it with the wattage rating of the new one. The greater the resistance, the more energy an oven element consumes. If the heating element in your broiler is not working or functions in any way, you should replace it right away. Your oven needs to function correctly to to cook your favourite meals. If your oven isn't functioning in any way or only intermittently, the problem could be with a different part of your oven. Light Bulb and Assembly The light lets you monitor the food that is cooking without opening the door and let the heat escape. The light also alerts you when your casserole is ready. But it's not uncommon for the light bulb to fail. This can be frustrating however, it's an simple fix that you can do yourself. Make sure that the breaker is not tripped, and that the connector has three prongs. Remove oven and hob , and then locate the new one. It is possible to search the internet for a replacement that matches the wattage and type of your oven. Some ovens have standard appliances with bulbs that run at 40 watts, while others need a halogen lamp up to 50 watts. Consider using cotton gloves to shield the halogen bulbs from damage caused by oil. Remove the glass casing of the bulb before you replace it. It's important to do this slowly so that you don't break it. After that, you'll need to eliminate the air inside the bulb and fill it with a mixture of gases. This will ensure a longer lifespan for the filament. If your light bulb is always blinking, it could be a bigger electrical issue that must be addressed by a professional. Make sure that you're using a correct bulb for your oven, and consult your Use and Care Guide for additional troubleshooting suggestions. Remember that it's recommended to unplug your oven and disconnect the power from the outlet before you start any repair. This will help protect your from electrical shock. Vent Tube The vent tube is an important oven element because it allows for a tiny amount of airflow within the cavity. This allows the bake element to circulate heat around the oven and ensures the temperature is evenly dispersed. It also allows vapors to be released from the oven, and smoke to be drawn from the cooking surface. It is crucial for the proper operation of any gas or electric oven. Oven vent tubes can become clogged or blocked by several reasons. Accidental spills and splatters during cooking can leave sticky residues on oven vents, which attract dust and other debris that can eventually cause blockages or clogs in the course of time. Oil and grease can also become airborne and build up on vents. Other environmental factors, like kitchen and construction work can create dust in the vents. This can cause clogs. Based on the type of the oven, the vent tube can comprise a spreader 46, the fill tip 12, and a bottle guide 20 that are integrated into the pipe 32. For example the bottle guide 20 may have a tapered outer surface which is in harmony with the tapered inside of the spreader 46. This allows the vent tube to be easily placed into various sizes and shapes of bottle necks. A clogged or blocked vent tube can result in the loss of pressure inside the enclosing structure, which can create a downdraft situation which pulls exhaust down vent and then backwards over the oven's burners, causing damage to oven components. Consult a professional if believe that your vent could be blocked or clogged. They will identify the issue and provide recommendations for removing or cleaning the vent.