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How to Repair Common Oven Parts Oven is a common kitchen appliance used to cook food. The heat generated by the oven sterilizes food items and kills the majority of micro-organisms present in them. All bakers require an accurate oven thermometer. Knowing how your oven functions can help you improve your baking and roasting skills and eliminate those irritated hot spots that wreak havoc with cookies, cakes and other baked products. Thermostat The thermostat is an important component of your oven. It is used to ensure that the temperature of food corresponds to the temperature that you set on the control panel. However, just like any other electro mechanical switch or sensor it can have issues that result in the oven going over heat or under heat, or not be able to maintain the temperature at the level you've set. The oven thermostat is basically tiny strips of two different metals bonded together. When heated, the metals expand or flex at different rates. This creates an electrical circuit. When the metal in the thermostat reaches the temperature you've set on your control panel it turns off the power to the heating element. As the oven cools the bimetallic strip contract to re-establish the circuit before activating the heating element. This process is repeated over and over to maintain a constant temperature in your oven. You'll need the oven disconnected and all screws removed to diagnose the issue with the thermostat. Set your multimeter 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 require to be replaced. If the multimeter does not read anything at all, then the thermostat is not working properly and requires replacement. Cooker Spare Parts recommends that you replace the thermostat with a brand new one that is the same model as the one you have. The thermostats are sold at a reasonable price online or in a kitchen products shop. Bake Element The bake element is crucial to the operation of your oven. It generates heat that allows it to cook food. It's a small component that turns electricity into the high temperatures required for baking, roasting, and broiling. Heating elements are commonly found in electric ovens and ranges, and they can be either covered or concealed under the oven's floor. In general oven heating elements are made up of high-resistance elements like nickel-chromium. They convert electrical energy into heat via the process of resistance which then radiates through the oven's interior, causing it to increase the temperature to the desired degree for cooking different types of food items. When you start the oven the heating elements begin to produce heat through the high-voltage current flowing across the surface of the metal. The element is a coil or ribbon (straight or corrugated) of wire. When the electric current flows through it, it begins to heat up. The element will glow red hot when it is at the desired temperature. The baked element is the main 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 use it for self-cleaning. When it begins to smoke, you might be noticing that your oven doesn't warm as quickly or your food isn't cooked through completely. To determine if you have a functioning oven baking element, plug your multimeter into its black and red ports, and then place the metal probes against each other on the opposite side of your element. Place the other end of the baking element against one terminal and place your hand on it. If the element feels warm, remove it and start testing again. If not, remove it and try again. Broil Element The broil element, which is usually located on the top of your cavity offers high heat to cook or char food items. The broil setting in your oven is a great option for quickly searing meat or vegetables, crisping them up, reheating lasagna, or making caramel on top of the casserole. Similar to the bake element the broiler heating element transforms electrical energy into heat through the process of resistance. It is made up of an internal core of wires that are wrapped in an insulating expanded perlite material. The inner core is enclosed in an outer layer of stainless steel to protect the wires from direct contact with the oven. The three-layer structure helps lower the broil element's temperature 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 in line with the wattage that your oven is rated for. A different wattage may 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 will allow you to examine the power and rating of your oven. ovens and hobs should also check the resistance of your old element and compare it to the wattage of your new broiler heating element. The higher the resistance, the more the power that an oven element draws from. If your broiler's heating element is not working or functions at all, you should replace it right away. Your oven must function properly for you to be able to cook your favorite meals. If your oven does not operate at all, or only intermittently, then the issue could be in a different part. Light Bulb and Assembly The oven light lets you keep an eye on the food while it cooks without having to open the door and let the heat escape. The light will also let you know when the casserole is finished. But it's not uncommon for the light to go out. It can be frustrating but you can do it yourself. Before you start, make sure that the breaker hasn't been tripped and that the three-prong connector is in good condition. First, take out the light bulb that was in use and find the new one. It is possible to look online to find the correct replacement bulb that matches your oven's wattage. Some ovens use normal appliance bulbs that are 40 watts in power and others require a halogen lamp up to 50 watts. You should consider using cotton gloves to shield the bulbs from damage caused by oil. Before you place the new bulb in it is important to first remove it from its glass casing. Do this slowly to avoid breaking it. You'll then need to remove the air from the bulb and replace it with the mixture. This will prolong the lifespan for the filament. If your bulb is constantly being replaced, it may be a larger electrical issue that should be addressed by an expert. Double check that you are using the correct oven bulb and look over your Use and Care Guide to find additional troubleshooting tips. Remember that it's a good idea to unplug your oven and disconnect the power from the outlet before you start any repair. This will protect you from electrical shock. Vent Tube The vent tube is an important oven part as it allows for a small amount of airflow to flow within the cavity. This permits 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 drained from the cooking surface. It is essential for proper operation of any gas or electric oven. Oven vent tubes can become blocked or blocked due to several reasons. Accidental spills or splatters while cooking can leave sticky residues on the oven vents, which could attract dust and other debris that can eventually cause obstructions or blockages over time. Grease and oil may also become airborne, and then settle around vents. Other environmental factors, like kitchen construction and renovations, can bring dust or other pollutants into the vents, which can cause clogs or blockages. Depending on the model of the oven the vent tube may comprise a spreader 46, a fill tip 12, and the bottle guide 20 which are integrated into the pipe 32. The bottle guide 20 may have a tapered outer edge that matches the tapered inside edge of the spreader, allowing the vent tubes to be inserted smoothly into different sizes and shapes of bottle necks. A blocked vent tube could cause a reduction in pressure within the enclosure, which could cause an updraft that pulls exhaust backwards and then down the vent, causing damage to oven components. Contact a professional if you suspect that your vent tube may be clogged or blocked. They will diagnose the problem and offer suggestions for removing or cleaning the vent.