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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 produced by the oven sterilizes food items and kills most of the micro-organisms present in them. An accurate oven thermometer is essential for all bakers. Understanding how your oven works will help improve your baking and roasting abilities and eliminate those frustrating hot spots that wreak havoc with cakes, cookies and other baked goods. Thermostat The thermostat is a crucial element of your oven. It is used to ensure that the temperature of food matches the temperature you set on the control panel. As with any electro mechanical switch or sensor, it may have issues that result in the oven going over or under heat, or simply not be able to keep the temperature you've set. The oven thermostat is an extremely small piece of different metals that are bonded. When heated by the oven, the metals expand or flex 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 down, the bimetallic strip contracts to re-establish the circuit before turning on the heating element. This cycle continues for a long time to ensure that the oven remains at a constant temperature. To identify a problem with the thermostat, you'll need to unplug the oven and ensure that all screws that hold it in place have been removed. Set your multimeter to the Ohms setting and then test the thermostat. If the multimeter displays zero or close to zero the thermostat is operating correctly and does not need to be changed. If the multimeter isn't reading anything, it's likely that the thermostat is not working properly and needs to be replaced. Cooker Spare Parts suggests that you replace your thermostat with one of the same model as the one you have. They can be purchased through the internet or at the kitchen store, and can be purchased at a reasonable cost. Bake Element The bake element is essential to the functioning of your oven. It generates heat that lets it cook food items. It's an easy component that transforms electricity into high temperatures for baking, roasting, and broiling. Electric ovens and ranges often include heating elements that can be either exposed or hidden under the floor. In general oven heating elements are made up of high-resistance materials such as nickel-chromium. They convert electrical energy into heat through the process of resistance, which then radiates through the oven's interior, causing it to increase the temperature to the desired level for cooking different types of foods. When you turn on the oven, the heating elements begin to generate heat by the high-voltage current that flows across the surface of the metal. The element is a ribbon or coil (straight or corrugated) of wire. When the electric current flows through it, it begins to get hotter. The element will appear red hot when it is at the desired temperature. The baked element is the main source of heat for the majority of oven functions. It is usually located at lower levels of the oven. Many automatic oven models also have it for self-cleaning. When it begins to burn out, you might be noticing that your oven doesn't warm as quickly or your food isn't fully cooked. To determine if you have a functioning oven baking element, plug your multimeter into its red and black ports, then rub the metal probes against each other on one side of the element. Place the other end of the element against one terminal and place your hands on it. If the element feels warm, remove it and start testing again. If not, take it off the element and test again. Broil Element The broil element, usually located on the top of your cavity, allows high-temperature temperatures to brown or char foods. The broil setting in your oven is an excellent option for quickly grilling meat and vegetables, crisping up vegetables, warming lasagna or making caramel on top of a 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 inner core consisting of metal wires, which are wrapped in an insulating expanded product known as perlite. The inner core is enclosed in an outer layer of stainless steel, which protects the wires from direct contact with the oven. The three-layer design can help reduce the temperature of the broil element, making it more secure than older designs. While you may use any 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 overheat. The current and voltage ratings of the new heating elements can be located on the control panel of your oven. This will allow you to examine the power and rating of your oven. You should also test the resistance of your previous element and compare it with the power of the new broiler heating element. The greater the resistance, the more energy an oven element consumes. If your broiler's heating element is malfunctioning or isn't working in any way, you should replace it as soon as possible. It is crucial that your oven functions properly so that you can cook all your favorite foods. If, however, your oven isn't working at all or only intermittently, the problem could be with a different part of your oven. Light Bulb and Assembly The oven light helps keep an eye on the food as it cooks, without having to open the door and let heat escape. The light will also let you know when the casserole is done. But it's not uncommon for the bulb to go out. It can be frustrating but you can do it yourself. Make sure the breaker isn't tripped and that the connector has three prongs. Remove the old bulb and then find the new one. It is possible to search online for a replacement that matches the wattage and the type of your oven. Some appliances use standard 40-watt bulbs, while others require a halogen bulb up to 50 watts. Be aware that the oils from your hands could damage the bulb, so it is recommended to use cotton gloves when handling it. Before you place the new bulb in You must first take it out of its glass casing. You should do slowly to avoid breaking it. You'll have to remove the air from the bulb and replace it with a mixture. This will ensure a longer filament life. If your light bulb is always going out, there may be a larger electrical issue that must be addressed by an expert. Make sure you're using the correct oven bulb and check your Use and Care Guide for additional troubleshooting tips. And remember that it's always recommended to unplug your oven and disconnect the power from the outlet prior to you start any repair. This will protect your from electrical shock. Vent Tube The vent tube is an important oven element because it allows for a tiny amount of airflow to flow inside the cavity. This allows the bake element to circulate heat around the oven and ensures that the temperature is evenly dispersed. It also allows the vapors escape from the oven, and smoke to be drained from the cooking surface. It is vital for the proper functioning of any gas or electric oven. Vents for ovens can become blocked or clogged due to a variety of factors. Accidental spills or splatters could leave sticky residues on oven vents. They can attract debris, dust and other contaminants that could cause clogs over time. Grease and oil particles can become airborne and settle on the vents, as well. Other environmental factors such as construction and kitchen renovations can cause dust to enter the vents. This can cause clogs. Depending on the model of the oven, the vent tube can comprise a spreader 46 and a fill tip 12, and the bottle guide 20 which are integrally formed into the pipe 32. The bottle guide 20 could have a tapered edge that complements the tapered inside edge of the spreader, allowing the vent tubes to be inserted smoothly into different sizes and shapes of bottle necks. A clogged vent tube can cause a reduction in pressure inside the enclosure which could cause an updraft that pulls exhaust backwards and down the vent, causing damage to the oven's components. If you think that your vent tube is blocked or blocked, contact an expert for assistance. They will diagnose the issue and offer suggestions on how to remove or clean the vent.