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How to Repair Common Oven Parts Ovens are an appliance in the kitchen that is used to cook food. The heat of the oven sterilizes food and kills the majority of microorganisms. Every baker needs an accurate oven thermometer. Understanding how your oven works will improve your baking and roasting skills and eliminate those annoying hot spots that can cause havoc with cookies, cakes and other baked goods. Thermostat The thermostat is one of the most vital components of your oven, helping to make sure that the temperature of your food is in line with what you've set on the control panel. Unfortunately, like any other electro mechanical switch or sensor it can sometimes have problems that result in the oven going over heat or under heat, or just not be able to maintain the temperature at what you've set. The oven thermostat is tiny strips of two different metals that are connected. When heated, the metals expand or bend at different rates. This creates an electrical circuit. When the metal in your thermostat reaches the temperature that you have set on your control panel, it will turn off the power to the heater. As the oven cools it expands the bimetallic strip in a circuit, re-establishing it and turning on the heating element. This cycle continues for a long time to ensure a constant oven temperature. To determine if there is a problem with the thermostat, you'll have to remove 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 the thermostat is operating correctly and doesn't require to be changed. If the multimeter fails to show anything, the thermostat is faulty. It needs to be replaced. best hob recommends that you replace the thermostat with a new one of the same type that your old one. The thermostats are sold at a reasonable price on the internet or in the kitchen store. Bake Element The bake element is crucial for the proper operation of your oven. It generates heat that lets it cook food. It's an easy component that converts electricity into high temperatures for baking, roasting and broiling. Heating elements are typically found in electric ovens and ranges and can be either covered or concealed under the oven's floor. In general, oven heating elements are constructed from high-resistance materials like nickel-chromium alloy. They work by converting electrical energy into heat using resistance. This heat is then radiated through the oven's interior to achieve the desired temperature for cooking different types foods. When you switch on the oven the heating elements start to generate heat by the high-voltage electric current flowing across the metal's surface. The element is a ribbon or coil (straight or corrugated) of wire, and as the electric current passes through it, it starts to heat up. When the element reaches the temperature it is intended to it starts to be lit up in red hot. The baked element is the primary source of heat for the majority of oven functions. It's usually located at the bottom of the oven and is used to perform the self-cleaning function in a variety of ovens that are automatic. When it starts to burn out you may be noticing that your oven doesn't warm as quickly or your food is not cooked through completely. To check for a working oven baking element connect your multimeter to its black and red ports, then touch the metal probes against each other on one end of your device. Place the other end of the element against one terminal and place your hands on it. If the element feels warm, take it off it and test it again. If not, take it off and try again. Broil Element The broil element is usually located in the top of your oven and can provide high heat like a grill to roast or grill food. The oven's broil setting can be a great way to quickly cook meat crisp vegetables, heat lasagna or caramelize the topping of a casserole. Similar to the bake element the broiler heating element transforms electrical energy into heat by the process of resistance. It is comprised of an inner core of wires that are wrapped in an insulating expanded perlite product. The core of the element is then covered with an outer layer of stainless steel to shield the wires from direct contact with the oven. The three-layer structure reduces the broil element's temperature, making it more durable and safer than older types of elements. You can use any heating element you want to use 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 damage your oven, or cause it overheat. The current and voltage ratings of the new heating elements can be found on the control panel of your oven. This allows you to determine the wattage and rating of your oven. It is also advisable to check the resistance of your previous element and compare it to the wattage of your new broiler heating element. The higher the resistance of an oven element, the greater power it draws from it. If your broiler heating element is acting up or doesn't work in any way, you should replace it right away. Your oven must function correctly to be able to cook your favourite meals. If your oven is not working at all, or is only working intermittently, the issue may be with a different part of your oven. oven uk and Assembly The light lets you keep an eye on your food while it cooks without opening the doors and let the heat escape. The light also informs you when the casserole is ready. It's not uncommon for the bulb to fail. It can be quite frustrating, but you can fix it yourself. Check that the breaker is not tripped and that the connector has three prongs. First, remove the old light bulb and find the new one. You may need to search the internet for a replacement that matches the wattage and type of oven you have. Some ovens utilize standard appliance bulbs of 40 watts some require an halogen lamp that can reach 50 watts. Be aware that the oil from your hands can cause damage to the halogen bulb, so consider using cotton gloves when handling it. Remove the glass casing from the bulb prior to replacing it. It's important to do this slowly so that you don't damage it. After that, you'll need to eliminate the air inside the bulb and fill it up with gas mixture. This will extend the filament life. If your light bulb is constantly blinking, it could be an electrical issue that needs an expert to fix it. Verify that you're using the correct oven bulb and check your Use and Care Guide for additional troubleshooting tips. Be sure to unplug your oven and turn off the power before beginning any repairs. This will protect you from electrical shock. Vent Tube The vent tube is an essential oven component that permits 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 the vapors to be released from the oven, and smoke to be drained from the cooking surface. It is vital for the efficient operation of any electric or gas oven. Vents for ovens can become clogged by many factors. Accidental spills or splatters can leave sticky remnants in oven vents. They can draw in dust, debris and other contaminants that could cause obstructions over time. Oil and grease can also become airborne, and then settle around vents. Other environmental factors like kitchen and construction work can cause dust to enter the vents. This can cause clogs. Depending on the oven model the vent tube may include a bottle guide 20, spreader 46 and fill tip 12 that are integrally constructed with the pipe 32. For instance the bottle guide 20 might have a tapered outer surface that compliments the complementarily tapered inside of the spreader 46, allowing the vent tube to be smoothly inserted into different sizes and forms of bottle necks. A clogged or blocked vent tube can result in a loss of pressure within the enclosing structure. This can create a downdraft situation that pushes exhaust down the vent and backwards towards the oven burners, causing damage to the oven's components. Consult a professional if suspect that your vent tube might be blocked or clogged. They will determine the cause and provide recommendations for removing or cleaning the vent.