How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Jon Your Own Question

Jon
Jon, Appliance Technician
Category: Appliance
Satisfied Customers: 3465
Experience:  Appliance Service Technician with 10+ years experience.
60802242
Type Your Appliance Question Here...
Jon is online now
A new question is answered every 9 seconds

Hello. My Bosch wall oven will no longer bake. When the bake

Customer Question

Hello. My Bosch wall oven will no longer bake. When the bake function is pressed, the oven temp goes up really high and burns whatever is in the oven. We've tried turning the braker off then on. What could be the problem?
Submitted: 1 year ago.
Category: Appliance
Expert:  Bryan replied 1 year ago.

Hello, Thank you for using this service, I will be helping you with your problem today

do you have a model number ?

Customer: replied 1 year ago.


Well, can't find the exact model number, but it could be one of the following: HB8750, HBL8550, HBL8650

Expert:  Bryan replied 1 year ago.
sorry I have no info on that unit. I'll put this question back on the board, thanks , Bryan
Customer: replied 1 year ago.


what does it mean to put the question back on the board?

Expert:  Bryan replied 1 year ago.
I don't have the info so I put this back on the list at the top and another tech will pick this up.
Expert:  Jon replied 1 year ago.
Hello

My name is Jon and i am an authorized bosch service tech and i can help you today, if you still need it?

please ope the oven door and look either down the side of the door for the model sticker or on the inside of the oven side wall. nearest to the door.

please list the full model number so i can look up the model oven you have.

and do you have a meter to do any testing with?

the possibilities here for the failure are the oven sensor, thermostat and or oven control board. either one of those parts could cause the oven to over heat and burn your food. and i will show you how to test them to see if they are failing or not so we can know for sure what is going on.

please get back to me here with the full model number of the machine and we can proceed.

thanks



Customer: replied 1 year ago.


HBL8450UC

Expert:  Jon replied 1 year ago.
Great.

Thank you for the model number. I will look it up right now.

Do you have a meter to do some checking with?
Customer: replied 1 year ago.

I'm not sure what type of meter you're speaking of?

Expert:  Jon replied 1 year ago.
an ac volt meter. preferably one with a continuity check on it.
Customer: replied 1 year ago.


No, we don't have one of those

Expert:  Jon replied 1 year ago.
ok no worries.

he is what you can do.

first power on the machine and put into a bake cycle on 350 degrees. it should come up to temp in about 10-15 minutes. if it takes any longer or faster then that please let me know.

after it comes up to temp and preheat cycle is raise the temp to 425 and see if it gives you another preheat tone at 425. it should take about another 5 minutes.

if it takes any longer then that the sensor is bad. if it comes up to temp right away or faster then 5 minutes then the computer and sensor are bad.

if it sounds like the computer is clicking alot during any part of the bake cycle then the computer is bad.

run that check and get back to me here and let em know what you find.
Customer: replied 1 year ago.

It about 5 minutes for the temperature to raise to 105 degrees and then it began smoking on the inside. There was a lot of clicking during the preheating that started off slow and sped up quickly. I turned the oven off because of the smoking and burning smell.

Expert:  Jon replied 1 year ago.
smoking inside the oven cavity where you bake? or smoke inside the console where the oven control is?
Customer: replied 1 year ago.


Inside the oven

Expert:  Jon replied 1 year ago.
the bake element is not exposed on your oven, correct?

if not, then there is a problem with the bake element and possibly the wiring to it. and will need to be checked by first powering off the machine and pulling out from the wall. then removing the screws to the back panel hiding the element. first check the wiring. if it is shorted or burnt out then that is the problem. if wiring looks good remove the bake element and check that. if both the element and wiring look good, which it most likely will not if there was smoke, then the computer is sending the wrong voltage to the element and causing the problem.

if element looks burnt or damaged in any way that is the problem.

check that and get back to me and let me know what you find.
Expert:  Jon replied 1 year ago.
you will probably find some damage to either the element or wiring and or the insulation. what ever you find please let me know and i will tell you how to proceed and fix it.

thanks

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air. Jean Riverhead, NY
< Last | Next >
  • Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air. Jean Riverhead, NY
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • John

    Home Appliance Technician

    Satisfied Customers:

    13442
    Appliance repair business owner for over 43 years.
< Last | Next >
  • http://ww2.justanswer.com/uploads/docjohn174/2008-12-13_170143_johnask.jpg John's Avatar

    John

    Home Appliance Technician

    Satisfied Customers:

    13442
    Appliance repair business owner for over 43 years.
  • http://ww2.justanswer.com/uploads/tomgoe/2011-01-04_021913_2008-03-03_183612_phpexrmok_c2pm.jpg Tom Goellner's Avatar

    Tom Goellner

    Home Appliance Technician

    Satisfied Customers:

    1191
    32 yrs. experience servicing major appliances and HVAC equipment.
  • http://ww2.justanswer.com/uploads/MD/md2020/2012-6-6_20648_Selfpic.64x64.jpg Tyler Z.'s Avatar

    Tyler Z.

    Appliance Doc

    Satisfied Customers:

    51307
    7+ years being an appliance technician with factory training.
  • http://ww2.justanswer.com/uploads/bryanpaul52/2009-2-18_12031_0918081611.jpg Bryan's Avatar

    Bryan

    Home Appliance Technician

    Satisfied Customers:

    11158
    15 yrs. experience as a certified appliance technician.
  • http://ww2.justanswer.com/uploads/SM/smitty1486/2011-3-1_0145_Snapshotofme1.64x64.png Kelly's Avatar

    Kelly

    Appliance Technician

    Satisfied Customers:

    6493
    Highly accurate diagnostician with over 30 years experience!
  • http://ww2.justanswer.com/uploads/TH/TheHomeSmithy/2011-8-13_11146_homesmithy.500x500.64x64.jpg The Home Smithy's Avatar

    The Home Smithy

    Home Appliance Technician

    Satisfied Customers:

    5935
    30 years repairing appliances
  • http://ww2.justanswer.com/uploads/TE/Teamcold/2012-6-15_15028_HomeRepairsquarecopy.64x64.jpg Barry G.'s Avatar

    Barry G.

    Home Appliance Technician

    Satisfied Customers:

    5039
    27 years in home appliance repair. EPA refrigerant transition and recovery certification type I & II.