I have a Bosch range HDS 255U dual fuel. The convection bake mode will not heat up properly and maintain the desired set temperature, it continues to stay on preheat and never gets to the right temperature. I saw a possible service bulletin for part # 445-300.
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most likely the door locked due to an overheat situation. It's a safety feature on most ovens made today. It may be caused by a fan motor not running properly thus allowing area above oven cavity to sense extreme temperature, blockage in air flow pattern, or a bad temperature control.
Whatever the cause, it's best to have a tech take care of this issue for you to prevent danger to you and your family.
I will say that is the control board that is not working properly. Have you try to unplugged for phew minutes?, this will reset the current settings. If not, I will star replacing the control board. Good Luck!.
WHAT WAS HAPPENING AT 1ST YOUR HI-LIMIT TERMAL SAFETY OR OVEN TEMP SENSOR FELT THAT THE OVEN WAS GET TOO HOT AND SEIZING OPERATION UNTIL SAFE TEMP WERE OBTAINED THIS IS GENERALLY A FAULTY OVEN TEMP SENSOR. I WOULD ADVISE YOU TO CONTACT A CERTIFIED TECH TO LOOK AT IT AND P.S. DON'T MENTION THAT YOU TOOK THE MACHINE APART MOST SERVICE COMPANIES WILL NOT SERVICE THE MACHINE IF IT BEEN TAMPER WITH BY THE CUSTOMER DUE TO INSURANCE AND LIABILITIES
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
When an oven doesn't maintain the set temperature, first make sure no one is allowing the heat to escape by opening its door. If not, the oven control either needs to be re-calibrated or replaced. To have the control replaced, call an appliance service person.