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How to Repair Common Oven Parts Oven is a kitchen appliance that is commonly used to cook food. The heat of the oven sterilizes food items and kills the majority of microorganisms. A reliable oven thermometer is a necessity for all bakers. Knowing how your oven functions will improve your baking cooking, roasting and cooking abilities. It can also help you avoid the annoying hot spots that can ruin cakes, cookies and baked products. Thermostat The thermostat is one of the most vital components of your oven, helping make sure that the temperature of your food is exactly what you've set in the control panel. It could be a problem, just like any other sensor or switch that is electro-mechanical. The oven may overheat or underheat, or not keep the temperature you have set. The oven thermostat is basically tiny strips of two different metals bonded together. When exposed to heat the different metals expand and bend at different rates, making or breaking an electrical circuit. When the metal in your thermostat reaches the temperature that you have set on your control panel it will shut off power to the heater. As the oven cools the bimetallic strips expand in a circuit, re-establishing it and turning on the heating element. This cycle is constantly repeated to ensure a constant temperature within your oven. To determine if there is a problem with the thermostat, you'll have to remove the oven and make sure that all screws holding it in place have been removed. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter reads 0 or very close to it the thermostat is functioning properly and doesn't need to be replaced. If the multimeter fails to detect anything then the thermostat is not working properly. It is time to get it replaced. Cooker Spare Parts suggests that you replace your thermostat with a thermostat of the same type as the old one. They can be purchased online or at a kitchen goods store, and are available at a reasonable price. Bake Element Ovens can't be complete without the bake element which is the element that heats up to help your oven cook food. It's a small component that transforms electricity into the high temperatures needed to bake, roast, and broiling. Electric ovens and ranges often have heating elements, which are either visible or hidden under the floor. In general oven heating elements comprise of high-resistance materials such as nickel-chromium. They convert electrical energy into heat using resistance. The heat then radiates through the oven's interior to reach the temperature required to cook various types of food. When you switch on your oven the heating element starts to generate heat by the high-voltage electricity that flows across its metallic surface. The element is a ribbon or coil (straight or corrugated) of wire. When the electric current flows through it, it starts to increase in temperature. The element will appear red hot when it is at the desired temperature. The baked element is the primary source of heat for most oven functions. It's usually located at the bottom of the oven. A lot of ovens that are automated also have it to clean themselves. When it begins to burn out, you might be noticing that your oven doesn't heat up as fast or that your food isn't fully cooked. To determine if you have a functioning oven baking element connect your multimeter to its black and red ports, and then place the probes made of steel against each other on one side of your device. The other end of the baking element against one terminal and place your hand 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 typically located at the top of the oven and can provide high-temperature heat similar to grills to brown or char food items. The oven's broil setting is an excellent way to quickly grill meat crisp vegetables, heat lasagna or caramelize the topping of the casserole. The broiler heating element is similar to the bake element in that it converts electrical energy via resistance into heat. It is made up of an internal core of wires made of metal wrapped in insulating expanded perlite product. The inside of the element is covered with an outer layer of stainless steel to shield the wires from direct contact with the oven. The three-layer structure helps lower the temperature of the broil element making it more durable and safer than older styles of elements. While you can use any baking or broiling heating element in your oven, make sure to select one that is compatible with the rated wattage of your oven. A different wattage may damage 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 examine the ratings and wattage of your oven. You should also test the resistance of your previous element and compare it to the power output of your new broiler heating element. The higher the resistance, the more energy an oven element consumes. If your broiler's heating element is malfunctioning or isn't working at all, you should replace it immediately. It is crucial for your oven to function properly to cook all of your favorite food items. If, however, your oven isn't working at all or only intermittently, the issue may be with a different part of your oven. Light Bulb and Assembly The oven light helps you keep an eye on your food cooking without opening the door and let heat escape. The light will also notify you when the casserole is done. But it's not uncommon for the light bulb to fail. It can be frustrating but you can fix it yourself. Before you begin, make sure that the breaker hasn't been tripped and that the three-prong connector remains intact. First, take out the light bulb that was in use and locate the new one. You may need to search online for a replacement that matches the wattage and the type of your oven. Some ovens use standard 40-watt appliance bulbs and others require halogen bulbs up to 50 watts. Be aware that the oils from your hands can cause damage to the halogen bulb, so it is recommended to use cotton gloves when handling it. Before you put the new bulb in place it is important to first remove it from its glass casing. It's important to do this slowly so that you don't fracture it. You'll then need to remove the air from the bulb and replace it with a mixture. This will prolong the lifespan of the filament. If your light bulb is always blinking, it could be a wider electrical problem that needs to be handled by an expert. Make sure you double-check that you're using a correct bulb for your oven and check out your Use and Care Guide for more troubleshooting tips. Remember to unplug the oven and turn off the power before beginning any repairs. This will protect your from electrical shock. Vent Tube The vent tube is an essential oven component that allows for an airflow within the cavity. This permits the bake element to circulate heat throughout the oven, making sure that the temperature is evenly distributed. Best ovens allows vapors to be released from the oven, and smoke to be drained from the cooking surface. It is vital for the proper operation of any electric or gas oven. Vents in ovens can get blocked due to many factors. Accidental spills or splatters while cooking can leave sticky residues on the oven vents, which attract dust and other particles that could eventually cause clogs or blockages over time. Grease and oil may also be airborne and settle on vents. Other environmental factors, such as kitchen construction and renovations, can bring dust or other pollutants into the vents, which can cause clogs or blockages. Based on the model of the oven the vent tube could comprise a spreader 46 and a fill tip 12, and a bottle guide 20 that are integrated into the pipe 32. For instance, the bottle guide 20 may have a tapered outer layer that compliments the complementarily tapered inside of the spreader 46 to allow the vent tube to be easily inserted into different sizes and shapes of bottle necks. A blocked vent tube may cause a reduction in pressure inside the enclosure which can cause a downdraft that pulls exhaust forward and down the vent, causing damage to the oven's components. If you suspect that the vent tube in your oven is clogged or blocked, contact an expert for assistance. They will diagnose the problem and offer suggestions for removing or cleaning the vent.