I get an f8 meswsage when I try to use the oven. It starts to beep about 10 minutes after I try to preheat oven

After the preheat cycle you must enter time (baking time) again and push enter/start.

Preheat is helpful when you're not cooking for more than a few minutes. If you're going to cook for 20 minutes or more, then most likely you don't need to pre-heat.

To pre-heat, simply turn your toaster-oven on 10 minutes before you put the food in.

I had to replace my igniter to get mine to work. I did it myself for $65.00 Mine the gas just would not stay on to heat up.

Most likely the problem is your bake element. When the oven is preheating it uses both the bake and the broil element. When it's done preheating it uses only the bake element, so the broil element is heating it up, and since the bake element is not working the temperature drops until it starts preheating again.

This is what a F8 fault says for that unit:

F8 Analog / Digital problem Replace clock (ERC).


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Are both of your heating elements lighting up when you are preheating? It sounds like the oven thinks it is pumping power into both elements and one isn't working. Oven elements are generally easy to remove and replace!

wow, that is so weird...i was just getting ready to write the exact same thing. this last time mine beeped, i just kept letting it beep for several minutes. if kept on. i then went in and pressed all the buttons except for cancel and nothing happened. then i pressed the oven light button. the beeping stopped. not sure if it's coincidence or if that was what i was supposed to press. i will keep messing with the buttons and let you know if i figure it out. i will dread if it beeps all night long.

Cold Stove, you may not be able to. The issue here is that oven manufactures put on their units a fast preheat. However it isn't possible to preheat an oven for 7 to 9 minutes and bake short time bake items properly. Also the oven sensor will respond faster than the absorbation rate of the sheet metal in the oven liner. To preheat an oven properly takes 15 to 20 minutes before putting in the food. I see this will a lot of current ovens. Sounds like a normal format of the control.

That code means "Shorted Oven Sensor". You can find out more about this by removing the bottom drawer, pull it out til it stops, lift it up and pull it all the way out. Now lay down on the floor and look under the oven to the left side. You will see a service info card there. Pull it out, open it up and have a read.

Glowworm, Im assuming your model is a 790.78802500. If your husband is handy with a meter have him ohm out the sensor. It should show around 1091 ohms at 75 degrees or room temp. The preheat is programed so that the manufacturer can get the energy effecient label on the range and what ever perks they get from it. It actually should take around another 10 to 15 minutes to reach the set temp after it shows preheated. You can calibrate the oven by setting bake to 550 degrees. Then press and hold the bake pad again for 15 seconds or until a single beep is heard. Now you can adust temps up or down in 5 degree increments up to 35 degrees by using the slew keys. It will show in the display. Once you have the calibration done, press stop/clear. Catriver...post back