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How to Repair Common Oven Parts The oven is a kitchen appliance that is typically used to cook food. The heat generated by the oven sterilizes food and kills the majority of microorganisms. An accurate oven thermometer is a necessity for bakers of all kinds. Understanding how your oven works will improve your baking and roasting abilities and eliminate those irritated hot spots that can cause havoc with cakes, cookies and other baked goods. Thermostat The thermostat is an essential element of your oven. It assists in ensuring that the temperature of food corresponds to the temperature you set on the control panel. Unfortunately, like any other electronic mechanical switch or sensor it can sometimes have problems that result in the oven going over or under heat, or not be able to maintain the temperature at the level you've set. The oven thermostat is a small strip made of two different metals that are joined. When exposed to heat, the various metals expand and contract at different rates, forming or breaking an electrical circuit. When the thermostat's metal is at the temperature you've set on your control panel, it shuts off power to the heating element. As the oven cools the bimetallic strip expands to re-establish the circuit before activating the heating element. This cycle is repeated continuously to maintain a constant oven temperature. To determine if there is a issue with the thermostat, you'll need to disconnect the oven and verify that all of the screws holding it in place have been removed. Set your multimeter to the Ohms setting and then test the thermostat. If the multimeter reads zero or close to zero it means that the thermostat is working properly and doesn't need to be changed. If the multimeter fails to read 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 previous one. They are available through the internet or at a kitchen goods store, and can be purchased at a reasonable price. Bake Element The bake element is essential for the proper operation of your oven. It provides heat that allows it to cook food. It's a simple component that transforms electricity into the high temperatures needed to bake, roast, and broiling. Electric ovens and ranges often contain heating elements, which can be either exposed or hidden beneath the floor. In general oven heating elements comprise of high-resistance elements such as nickel-chromium. They convert electrical energy into heat via the process of resistance which radiates outwards into the oven's interior to raise the temperature to the desired degree to cook different kinds of food. When you turn on your oven the heating element starts to work by generating heat from the high-voltage electrical energy moving across its metal surface. The element is a ribbon or coil (straight or corrugated) of wire, and when the electric current flows through it, it begins to increase in temperature. When the element reaches its desired temperature it starts to be lit up in red hot. The baked element is the main source of heat for most oven functions. It's usually located in the bottom of the oven, and is used to perform the self-cleaning function in many ovens with automatic cleaning. You may be noticing that the oven doesn't heat up as quickly or that your food hasn't fully cooked. To check for a working oven baking element connect your multimeter to its red and black ports, then touch the probes made of metal against each other on one end of your element. Set the other end of the probe against one of its terminals, and put your hand on it to determine whether the baking element is warm to the touch. If not, take it off and try again. Broil Element The broil element, typically located at the top of your cavity, provides high heat to cook or char the food. The broil setting of your oven is a great choice for quickly searing meat and vegetables, crisping up vegetables, warming lasagna or caramelizing the top of a casserole. Similar to the bake element, the broiler heating element converts electrical energy into heat via the process of resistance. It consists of an inner core of wires that are wrapped in an insulating expanded perlite material. The inner core is then wrapped in 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 secure and efficient than older types of elements. While you are able to use any heating element in your oven, make sure to choose one that matches the wattage rating of your oven. Using a different wattage can harm your oven or cause it to overheat. The voltage and current ratings of the latest heating elements are available on the control panel of your oven. This allows you to determine the ratings and wattage of your oven. You should also test the resistance of your previous element and compare it to the power of the new broiler heating element. The greater the resistance of an oven element the more power it uses. If your broiler heating element is acting up or doesn't work at all, you should replace it immediately. Your oven must work properly to be able to cook your favorite meals. If your oven does not operate in any way, or just intermittently, then the issue could be a problem with a different component. Light Bulb and Assembly The oven light helps you keep an eye on your food while it cooks without having to open the door and let the heat escape. The light will also notify you when the casserole has been cooked. It's not uncommon for the bulb to go out. This can be frustrating but it's an easy fix you can do yourself. Before you begin, make sure that the breaker hasn't been tripped and that the three-prong connector remains intact. Remove the old bulb, and then find the new one. It is possible to look online to find the correct replacement bulb that is compatible with your oven's wattage. Some appliances use standard 40-watt bulbs some require a halogen bulb that is up to 50 watts. It is recommended to use cotton gloves to protect the bulbs from damage caused by oil. Remove the glass casing from the bulb prior to replacing it. You should do this slowly so that you don't break it. Then, you'll have to remove the air from the bulb and fill it up with gas mixture. This will provide a longer life for the filament. If your bulb keeps blinking it could be an electrical issue that needs a professional to fix. Make sure that you're using a correct bulb for your oven, and consult your Use and Care Guide for more troubleshooting advice. Also, remember that it's recommended to unplug your oven and disconnect the power from the outlet before you begin any repair. This will help protect your from electrical shock. Vent Tube The vent tube is an essential oven part that allows for a tiny airflow inside the cavity. This allows the bake element to circulate heat throughout 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 necessary to ensure the proper operation of any gas or electric oven. Vents in ovens can get blocked due to various reasons. Accidental spills or splatters could leave sticky residues on oven vents. hobs and ovens may draw in dust, debris and other contaminants that can cause clogs in the course of time. Oil and grease particles can be blown into the air and settle around the vents, as well. Other environmental factors like kitchen and construction projects can introduce dust into the vents. This can lead to clogs. Based on the oven model the vent tube could include an a bottle guide 20 and spreader 46, as well as fill tip 12 that are integrally formed with the pipe 32. For example the bottle guide 20 could have a tapered exterior surface that is complemented by the tapered inside of the spreader 46. This allows the vent tube to be easily fitted into various sizes and forms of bottle necks. A blocked or clogged vent tube can result in the loss of pressure inside the enclosing structure. This can result in a downdraft that pushes exhaust down the vent and backwards through the oven's burners, which can cause damage to the oven's components. Consult a professional if suspect that your vent tube may be clogged or blocked. They will identify the issue and provide recommendations for removing or cleaning the vent.