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How to Repair Common Oven Parts The oven is a kitchen appliance that is commonly used to cook food. The heat from the oven sterilizes foods and kills most of the micro-organisms in them. An accurate oven thermometer is a necessity for bakers of all kinds. Knowing how your oven functions will help improve your baking and roasting skills, and eliminate those annoying hot spots that wreak havoc with cakes, cookies and other baked goods. Thermostat The thermostat is one of the most vital components of your oven, assisting to ensure that the temperature of your food matches what you've set in your control panel. It could be a problem, just like any other sensor or switch that is electro-mechanical. The oven could overheat or underheat, or simply not maintain the temperature you set. The oven thermostat is essentially tiny strips 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 the thermostat attains the temperature you've set on your control panel it turns off the power to the heating element. As the oven cools it expands the bimetallic strip, re-establishing circuit and activating the heating element. This cycle is constantly repeated to maintain a constant temperature within your oven. You'll need the oven disconnected and all screws removed to diagnose the problem with the thermostat. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter reads zero or very close to it the thermostat is working correctly and doesn't need to be replaced. If the multimeter fails to show anything then the thermostat is not working properly. It needs to be replaced. Cooker Spare Parts suggests that you replace your thermostat with a thermostat of the same type as the old one. They are available online or at a kitchen goods store, and can be bought at a reasonable price. Bake Element The bake element is essential to the functioning of your oven. It produces heat that allows it to cook food items. It's a basic element that converts electricity into the high temperatures needed for baking, roasting, and broiling. Heating elements are usually found in electric ranges and ovens, and they can be either covered or concealed under the floor of the oven. In general, oven heating elements consist of high-resistance elements such as nickel-chromium. They work by converting electrical energy into heat through the process of resistance, which then radiates through the oven interior to raise the temperature to the desired temperature for cooking different types of food. When you switch on the oven the heating elements start to produce heat through the high-voltage current flowing across the metal's surface. The element is a coil or ribbon (straight or corrugated) of wire. When the electric current flows through it, it starts to increase in temperature. When the element reaches the temperature it is intended to it starts to glow red hot. hobs is the primary source of heat in most oven functions. It is usually located at lower levels of the oven. Many automatic oven models also have it to clean themselves. If it starts to burn out you may be noticing that your oven doesn't heat up as fast or that your food is not fully cooked. Plug your multimeter in to its red and black ports. Then, touch the probes made of steel on one side of the element to each other. Place the other end of the element on one terminal and place your hand on it. If the element feels warm, take it off it and test it again. If not, remove it and try again. Broil Element The broil element, which is typically located at the top of your cavity offers high heat to brown or char food items. The broil setting of your oven is a great option for quickly grilling meat and vegetables, crisping up vegetables, warming lasagna or making caramel on top of the casserole. The broiler heating element is comparable to the bake element in that it converts electrical energy through resistance into heat. It is made up of an inner core consisting of wires made of metal, encased in an insulating and expanded product known as perlite. The core of the element is covered with a stainless steel outer layer to protect the wires against direct contact with the oven. The three-layer structure helps lower the temperature of the broil element making it safer and more efficient than the older designs of elements. While you can use any heating element in your oven, make sure to select one that is compatible with the wattage that is recommended for your oven. A different wattage could harm your oven, or cause it to overheat. The voltage and current ratings of the latest heating elements can be located on the control panel of your oven. This will allow you to check the wattage and rating of your oven. Check the resistance of the previous element, then compare it with the wattage rating of the new one. The greater the resistance, the more energy an oven element consumes. Replace the element in your broiler immediately If it's not functioning or if it's acting up. Your oven must work correctly to be able to cook your favourite meals. If hobs and ovens does not work in any way, or just intermittently, then the issue could be a problem with a different component. Light Bulb and Assembly The light allows you to keep an eye on your food as it cooks without opening the door and let heat escape. The light will also notify you when the casserole has been cooked. It's not unusual for the bulb to go. It can be a hassle, but you can fix it yourself. Before you begin, make sure that the breaker isn't tripped and that the three-prong connector is in good condition. Remove the old bulb, and then locate the new one. You may have to search the internet for a replacement bulb that is compatible with the wattage and model of oven you have. Some appliances use standard 40-watt bulbs, while others require halogen bulbs up to 50 watts. Consider using cotton gloves to protect the bulbs from the damage caused by oil. Before putting the new bulb into place it is important to first remove it from its glass casing. It is important to do this slowly so that you don't break it. Then, you'll need to remove the air from the bulb and fill it with a mixture of gases. This ensures a longer life for the filament. If your bulb is always running out it could be an electrical issue that requires a professional to fix. Verify that you're using the correct oven bulb and look over your Use and Care Guide for more help in troubleshooting. Also, remember that it's an excellent idea to unplug your oven and disconnect it from the outlet before you start any repair. This will prevent you from being shocked by electricity. Vent Tube The vent tube is an important oven element because it allows a small amount of airflow to flow inside the cavity. This allows the bake-element to circulate heat throughout the oven, ensuring that the temperature is evenly distributed. It also allows vapors to escape from the oven and smoke to be drawn from the cooking surface. It is crucial for the proper operation of any electric or gas oven. Vents in ovens can get blocked due to various reasons. hobs or splatters while cooking can leave sticky residues on the oven vents, which draw dust and other debris that can eventually cause clogs or blockages in the course of time. Grease and oil can also be airborne and settle on vents. Other environmental factors, like kitchen and construction projects can introduce dust into the vents. This can cause clogs. Depending on the oven model the vent tube could comprise the bottle guide 20 and spreader 46, as well as fill tip 12 that are integrally formed by the pipe 32. For instance, the bottle guide 20 might have a tapered exterior surface that compliments the complementarily tapered inside of the spreader 46 to allow the vent tube to be smoothly fitted into various sizes and forms of bottle necks. A blocked or clogged vent tube could cause an increase in pressure within the enclosing structure, which can create a downdraft situation that pushes exhaust down the vent and then backwards over the oven burners, causing damage to oven components. Consult a professional if you think your vent pipe may be clogged or blocked. They will diagnose the problem and give suggestions for clearing or cleaning the vent.