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How to Repair Common Oven Parts Oven is a common kitchen appliance used to cook food. The heat of the oven sterilizes food items and kills the majority of microorganisms. All bakers require an accurate oven thermometer. Understanding how your oven functions will improve your baking, roasting and cooking skills. It will also help eliminate those hot spots that can ruin cakes, cookies and baked items. Thermostat The thermostat is an essential element of your oven. It helps to ensure that the temperature of food corresponds to the temperature you have set on the control panel. It could be a problem as is any other switch or sensor that is electro-mechanical. The oven can overheat or underheat, or simply not maintain the temperature you set. The oven thermostat is a small strip made of two different metals connected. When heated to a certain temperature, the two metals expand and bend at different rates. This creates an electrical circuit. When the metal in your thermostat reaches the temperature you have set on your control panel, it will shut off heating element's power. As the oven cools the bimetallic strip expands to re-establish the circuit before activating the heating element. This cycle continues for a long time to ensure a constant oven temperature. To diagnose a problem with the thermostat, you'll need to unplug the oven and verify that all of the screws holding it in place have been removed. Set oven and hob to the Ohms setting and then test the thermostat. If the multimeter reads zero or close to it, then the thermostat is functioning properly and doesn't need to be replaced. If the multimeter does not show anything, the thermostat is faulty. 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. The thermostats are sold at a reasonable price on the internet or in the kitchen store. Bake Element The bake element is vital to the functioning of your oven. It provides heat that allows it to cook food items. It's a simple component that converts electricity into high temperatures for baking, roasting, and broiling. Heating elements are commonly found in electric ranges and ovens, and they can be either uncovered or hidden under the floor of the oven. In general oven heating elements are made up of high-resistance materials such as nickel-chromium. They work by converting electricity into heat via resistance. This heat is then radiated through the interior of the oven to attain the temperature required to cook different kinds of food. When you start the oven the heating elements begin to produce heat through the high-voltage current flowing across the metal surface. When electricity runs through it the element gets heated up. The element will appear red hot when it reaches the temperature you want. The baked element is the main source of heat in all oven functions. It is usually located at in the bottom of the oven. A lot of ovens that are automated also have it for self-cleaning. You may observe that the oven does not warm up as quickly, or that your food isn't cooked completely. To verify that you have a working oven baking element, plug your multimeter into its red and black ports, and then place the probes made of steel against each other on one end of your element. Place the other end of the baking element against one terminal and then place your hand on it. If the element feels warm, remove it and test it again. If not, take it off and try again. Broil Element The broil element, usually found at the top of the cavity, offers high heat to cook or char the food. Broil settings in ovens are an excellent way to quickly grill meat or crisp vegetables, to heat up lasagna or caramelize the top of a casserole. Similar to the bake element, the broiler heating element converts electrical energy into heat through the process of resistance. It consists of an inner core of wires that are wrapped in insulating perlite product. The inside 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 which makes it more secure and efficient than older types of elements. You can use any heating element for baking or broiling in your oven. But, you must choose one that is compatible with the wattage of your oven's rating. A different wattage can cause damage to your oven or cause it to overheat. The current and voltage ratings of the latest heating elements can be found on the control panel of your oven. This allows you to determine the wattage and rating of your oven. Check the resistance of the previous element, and compare it to the wattage ratings of the new one. The greater the resistance of an oven element the more power it uses. Replace your broiler element immediately If it's not working or if it is acting up. Your oven must function properly to be able to cook your favorite meals. If your oven does not work in any way, or just intermittently, the issue may be with another part. Light Bulb and Assembly The oven light helps you keep an eye on the food while it cooks without opening the door to let heat escape. The light also informs you when your casserole is ready. But it's not uncommon for the light to fail. This can be very frustrating however, it's an easy repair that you can accomplish yourself. Check that the breaker is not tripped, and that the connector has three prongs. Remove the old bulb, and then look for the new bulb. You may need to look online for the right replacement bulb that is compatible with your oven's wattage. Some ovens use normal appliance bulbs that run at 40 watts some require an halogen lamp that can reach 50 watts. It is recommended to use cotton gloves to protect the bulbs from the damage caused by oil. Remove the glass casing from the bulb before you replace it. It's important to take this step slowly to ensure that you don't damage it. After that, you'll need to eliminate the air inside the bulb and fill it with a mixture of gases. This will extend the lifespan for the filament. If your light bulb is constantly blinking it could be due to an electrical problem that requires a professional to fix. Be sure to double check that you're using the correct bulb for your oven, and consult your Use and Care Guide for more troubleshooting advice. Make sure to unplug the oven and turn off the power prior to beginning any repairs. This will protect your from electrical shock. Vent Tube The vent tube is an essential oven part that allows for a small airflow inside the cavity. This allows the bake element to circulate heat throughout the oven and ensures the temperature is evenly distributed. 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 electric or gas oven. Oven vent tubes 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 dust, debris and other contaminants that can cause clogs over time. Oil and grease particles can be blown into the air and settle around the vents, too. Other environmental factors, like kitchen construction and renovations, can bring dust and other contaminants into the vents, resulting in blockages or clogs. Based on the oven model the vent tube may include the bottle guide 20 or spreader 46 as well as a fill tip 12 that are formed by the pipe 32. For instance, the bottle guide 20 might have a tapered outer layer that compliments the complementarily tapered inside of the spreader 46, allowing the vent tube to be easily fitted into various sizes and designs of bottle necks. A clogged or blocked vent tube can result in an increase in pressure within the enclosing structure, which can result in a downdraft that pushes exhaust down the vent and backwards through the oven burners, causing damage to the oven components. If you believe that your vent tube is blocked or blocked, call a professional for help. They will identify the problem and provide suggestions on how to clean or clean the vent.