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The Home Smithy
The Home Smithy, Home Appliance Technician
Category: Appliance
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Experience:  30 years repairing appliances
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I have a bosch double oven model number HBL755AUC/01. In preheat

Customer Question

I have a bosch double oven model number HBL755AUC/01. In preheat or bake mode, the oven will just shut off. A code comes up V0515. Then goes through a process and displays "locking doors" then "unlocking doors" upper, then lower oven. Then the clock flashes a random time. This is approximately a 1 minute process. The tech replaced the main display twice. Still had issue. Tech contacted Bosch rep to inquire on additional assistance. they stated that the oven may not have been configured to the correct model. 30 Thermal 2, 30" double oven multifunctional/thermal. Oven was reconfigured. Still is causing issues.
Submitted: 1 year ago.
Category: Appliance
Expert:  The Home Smithy replied 1 year ago.

Hi. I'm Smitty. I am a professional appliance repair consultant here to help you diagnose, and repair, your appliance.

After reading through the manual it seems that something other than ther main control board is causing the unit to reset.

This is what you are seeing on the display (see first screen shot below).

As you are only seeing the first part I can guess that the control board is loosing power somehow when the oven is sent the preheat or bake input.

As the main board works in cooperation with the power board and the power board is what supplies the power to the main board it would be logical that the power board is the real culpret here.

There are of course diagnostics that you can perform to confirm this.

To help you understand how your unit works and do the diagnostics please click here to download a copy of the service manual for your unit.

If you start at page 22 it will take you through the system and expalin how it all works together. Im sure that with a little reading you will be able to figure this out.

Of course if you have any questions please let me know.

Thank you for the opportunity to serve you.
Best, Smitty
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The Home Smithy, Home Appliance Technician
Category: Appliance
Satisfied Customers: 9572
Experience: 30 years repairing appliances
The Home Smithy and 4 other Appliance Specialists are ready to help you
Customer: replied 1 year ago.


Hi Smitty,


 


Thank you for sending this information. We will read through it thoroughly. We have had the display board (Part 489262) replaced twice. So what I am getting from your response is that you think it may be the power board?


 


Thanks again.


 


Lori

Expert:  The Home Smithy replied 1 year ago.
Sorry for the delay replying, Lori. Had a major system crash and hardware issues along with it. =(
As for the power board I am petty sure that it is the culprit here. Everything points to a power failure that keeps causing the main board to reset, and the power comes from that board.

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