Heat escaping, uneven baking, longer cooking times
I have a Neff double oven and have noticed in the last 5-6 weeks that food is taking longer to cook and baking has become uneven. There seems to be a fair amount of heat coming from the top of the bottom oven door. Will the seals need replacing? I've had the oven a few years now.
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Re: Heat escaping, uneven baking, longer cooking times
Either the seals need to be replaced, or you may have weak oven door hinges, and the door is not closing properly.
Only solution would be to replace both hinges if this is the case.
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You're actually referring to the "broiler" elements. Most electric ovens have these at the top of the main oven space. (Some gas ovens are set up the same way, but many put the broiler elements in a bottom drawer.)
As their name implies, broiler elements are active only when you're broiling. They will not go on for baking.
Broiling is the process of cooking food by exposing it directly to a high heat source at close range. To broil a steak, for example, you would place the pan holding the steak on an oven rack raised to the top or next to top position in the oven (consult the manual) and set the oven to broil. The top elements will then turn on and cook the meat by direct radiation.
Most people, however, use ovens for baking far more often than for broiling. Baking is the process of cooking food (cakes, casseroles, roasts etc) by indirect heat. In other words you raise the oven to a certain temperature, put the food on a rack more in the middle of the oven, and let the surrounding heat cook it over time. When you bake the top broiler elements usually don't come on at all.
There does seem to be a fault, as the fan should run continuously even when the element goes off at the required temperature setting, and the light should atay on as well.
It suggests to me that there is a fault with the oven thermostat, or it is wired incorrectly.
The top of whatever food you're cooking should be in the center of the oven for the most effective cooking. Do you have the oven set on bake or broil? Broil is a direct heat method and if the food is on the lower shelf and the oven is set on broil, the food is not getting enough heat to cook it properly. Baking heats the lower element and the heat rises to surround the food. Broiling heats the top element and since heat rises, it is not getting down to the food to surround it and cook it.
The heating element in top unit may be loose or burned out. Push the element toward the back and see if it engages. If it is already engaged, you'll need to replace it. It is simple to remove it.Just give a firm tug and it should come right out. To replace with a new element, simply push it in firmly.
With the bottom unit, are controls set for bake? If they are set for "broil" you are using direct heat and it will cook foods more quickly.Also, is bottom unit a convection oven? If so, foods will cook in 1/4 to 1/2 the time for a conventional oven, so you'll have to adjust your temperature down about 25-50 degrees and shorten your cooking time.
I have a Whirlpool 30" oven. I've noticed that it seems to be taaking longer to cook the food, so I purchased a cooking thermometer. It appears that the temperature reading on the oven display is lower than the internal readin gon the purchased oven thermometer (275 vs setting of 350). Is this most likely a bad heat sensor or could it be the bake element?
I repair commercial cooking equipment for a living. When a customer complains about uneven cooking the #1 thing that these manufacturers ask is..... are they turning (180*) the baking sheets half way thru the cook cycle. #2 are they staggering the pans front to back & side to side. It's kind of a pain but, works for the commercial ones.
There are many reasons for uneven cooking in any oven
These are just a few possibilities.
Not pre- heating oven
Putting too much in the oven, thereby restricting air circulation.
Not putting on correct shelf level.
Use of foil in the oven which can reflect heat.
Badly fitting door.
Perished door seal.
Thermostat not controlling temp properly. Check with oven thermometer.
There plenty of other resons besides these, but these are some of the more important ones.
So do check these points..
If you are still experiencing problems, then you will probably have to call an oven expert in too look at it.
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You should always preheat oven to operating temperature before cooking anything.
Do not put too much in oven, leave plenty af space for good air circulation.
Do not place any reflective foil or the like on the bottom of oven or shelves, as this reflects heat, and you will get uneven cooking.
Make sure fan is working efficiently if it is fan assisted.
When you first use your Oven, the Oven will need to "settle". That is, it needs to burn off production residues and dust. The metal used in the Oven will also expand slightly when first used. You will experience some crackling and a strong smell. This is perfectly normal and we advice you anticipate this "settling" prior to use. Using an empty Oven, select Function 4 and set a temperature of 250°, allow the Oven to "settle" for hour, turn to function 3 and heat for a further 1/2 hour. Multifunction Oven Function Selections
2. Defrost - This function activates the fan only, (no heat is used) to allow controlled and hygienic defrosting. 3. Conventional cooking - Normal or traditional cooking functions using the top and bottom elements. When using this function set the thermostat between 50 - 250°C. When the desired temperature is reached the yellow light will go out and then alternate between lit and unlit as the temperature is controlled. 4. Fan-Forced cooking - This selection is best for multilevel cooking as the heat generated by the central element is circulated around the Oven, creating an even heat environment. You will need to set the thermostat dial between 50-250°C for this function. 5. Center Griller - For best results set the thermostat to MAX. The door may remain closed or completely open. 6. Large Griller - For best results set the thermostat to MAX. The door may remain closed or completely open. 7. Fan Griller - This function combines the grill element with fan assistance and is used in conjunction with the thermostat. The Oven door must remain CLOSED during cooking. The thermostat dial should be set between 50-250°C for this function. 8. Fan-assisted Baking or Patisserie Setting - Combines the concealed bottom element with fan assistance and is used in conjunction with the thermostat. The Oven door must remain CLOSED during cooking.
Advanced Oven Features Cavity Cooling The Oven has an advanced cavity cooling system. A cylindrical fan is mounted on the rear outside frame of the Oven. This fan assists the movement of air through the Oven cavity keeping it cool. In addition to reducing the temperature in the Oven cavity, the air is blown out around the Oven door handle which keeps the door handle cool. The cooling fan is activated when the Oven light or any cooking function is selected and will switch off after all Oven functions have been turned off. Triple Reflective Door Glazing Some Ovens have two levels of removable door glass. The two inner layers are removable and are made of a reflective glass which, in effect, reflects heat back into the Oven and results in a significant reduction in the outside door surface temperature. To clean the door glass, use a coin or large screwdriver to remove the screws. Wipe both sides of the inner, middle and outer glass. Wipe the sealing gasket. Don't forget to replace the rubber sealing gasket around the centre glass layer before replacing the glass. Ensure the narrow air gap lies between the inner and centre glass layers and the wider gap lies between the centre and outside glass layers. Tighten each screw gradually, one then the other until firm. Do not overtighten.
Wipe Clean Enamel (Extra Optional) Some models have easyclean blue enamel paint throughout the internal cavity walls. Other models have baking trays and grill pans finished in the soft grey super tough "wipe clean" enamel. This enamel is less porous than conventional, so that food does not adhere as easily. Simply wipe clean with a soapy cloth or creme cleanser when cooking is finished. For baked on residue, use a smooth scraper or if necessary a non-caustic Oven cleaner.
Drop Down Grill Element (Extra Optional) The removal of a single screw at the front of the upper grill element in some models allows the element to drop down so that cleaning of the roof of the Oven is made easy. On completion of cleaning, simply replace the grill element and secure with the screw, finger-tight.
Function 3: Normal Oven baking using heat from both the upper element and concealed lower element.
To bake, place the Oven rack in the appropriate position according to the type of food to be cooked. Turn the Function Selector to Position 3 and the thermostat knob to the correct temperature, and allow the Oven to fully preheat for best results.
Ideal for cooking casseroles, soufflés, roast, meats, and other items which require a slow method of cooking.
Function 4: Fan-forced central element cooking requires slightly different timing techniques than normal cooking. The fan draws the air in and over the central element which is positioned around the fan and then circulates it back around the Oven cavity. The even distributor of heat allows foods to rise and cook simultaneously regardless of shelf level. Lower cooking temperatures and in some cases less cooking time is another advantage of this feature.
Turn the Function Selector to Position 4 and turn the thermostat to the desired temperature. Pre heating takes much less time than a normal bake Oven.
Note: When cooking meats, for best results always preheat the Oven to ensure the meat surface is sealed to lock-in juices for a moist and tender result.
Fan forced cooking is ideal for multilevel cooking e.g.. patty cakes. Another advantage of fan forced cooking is that different types of food may be cooked simultaneously without mixing the aromas or flavours. When using the Oven in this way, ensure that all the foods require the same cooking temperature and check the finish times of each dish for best results.
Please note that fan-forced cooking is faster than conventional methods, so take care not to burn your food when you first start using this method.
Function 5 & 6: During grilling the door may remain closed or completely open.
This function offers the traditional grilling method necessary to achieve proper browning without overcooking the interior of the foods.
Position 5 activates the centre section of the upper grill element only, which is ideal for browning smaller portions or thinner cuts of meat.
Position 6 activates the entire upper element for the grilling of large quantities or thick cuts of meat.
Allow the griller to pre-heat for approx. 2 minutes before sliding the tray into position.
Place the grill tray into the roasting pan and arrange food according to the function you have selected, either in the centre of the tray or spread across the full width of the tray. Position the tray at the correct grilling level and turn the thermostat control to MAX for best results.
As the temperature is set to MAX you may need to adjust your grilling shelf height to suit the desired cooking result. If the tray is too close to the element, the food will be exposed to the full effect of the element and may burn and create smoke.