Kitchen wall oven there is a buzzing sound when in the convection bake cycle

thermostat is bad

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Do you mean the fan inside the oven box in the back wall. This is the fan for the Convection bake etc. If so this is how it works..

a) Bake feature - that fan does not come on

b) Convection bake - that fan comes on during bake cycle

So that fan works for several features but not for all. It helps to circulate the hot air inside better for a more even, fast bake.

Do you mean the fan in the control board area. It is there to get the hot air trapped in the oven walls out. Not the heat inside the oven bake box area. This fan works differently depending the model and/or brand. Some models fan works from the time you start. Some models fan comes on only when that area reaches a certain high temperature.

Most wall ovens have a cooling fan that comes on when the oven has been on for some time. It is separate from the convection operation. It should shut off after the oven has been off for a time.

it could be the oven temp sensor rod located near the top of the inside of the oven,or possibly the bake element has a hot spot on the element and can no longer pass enough current thru this spot to correctly heat to your settings a hot spot on the element will look discolored in this area

Fan is bad or blades are bent hitting frame

This is a lock switch error code. Check wiring to door lock switch (the wire harness may be connected wrong). Check for stuck lock switch. If the switch cannot be re adjusted, it must be replaced.

I have a 2yo Kitchenaid oven, and my advice is first, don't use convection for cakes or pizza. Use the thermal oven. For pizza preheat to 500 degrees, then put the pizza on the lowest rack, and bake for 7-8 minutes.This way the bottom browns, and the top doesn't get broiled from the top element coming on during the bake cycle.

As for cakes, again place them on the low rack so that they get bottom heat. I keep my eye on the oven and when the broil element comes on I stick a piece of foil over the cake until it goes off. Otherwise it will set the top and the cake won't rise as much. Even doing that cakes don't rise as much as they did in my old oven, and they brown too much on top.

The convection oven does a good job of cookies, and the broil mode is okay.

I wish I hadn't bought this oven, but I didn't know about the upper (broil) element coming on during the bake cycle until I'd had it for awhile, and it was too late to return it.

If anyone's shopping for an oven, ask questions, and don't get one that maintains the oven temperature by activating the broil element when baking.

make sure you have selected convect bake, otherwise remove oven from wall to acces the back and test voltage at the fan, most likely the fan is bad, if you use conv. bake alot

I have just checked the baking guide in the manual and have found that it may not be us after all. (Maybe this is why they telll us to read the whole manual. Well, I never have) According to the cooking time for Baking, the range is very extensive. For example, an angel cake at 350 could take from 28-50 minutes, buscuits at 375-400 could take 8-16 minutes, layer cakes at 350-375 could take 25-40 minutes, pound cakes at 325-350 could take 45-70 minutes and fresh pies at 400-450 could take 35-60 minutes. Basically, the baking directions on the box means absolutely nothing to use Amana oven owners. We have no choice but to cook our food or baked goods until they are cooked, whenever that may be. :) Linda