Question about Bosch HBL 745 Stainless Steel Electric Single Oven

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Sparks coming from back of oven

Did this problem get solved?

We have experienced a similiar problem. After baking a frozen pizza @
450 degrees, ~ 15 minutes, then cancelling the baking cycle my daughter saw sparks at the back of the oven looking through the door.

I was not there and when I tried to create the problem by repeating the baking cycle did not see any problem.

It appears in the vacinity of the convection fan. I could shot gun the fan, but since I don't see the problem, I'm wondering is something made
it through the holes in the back of the oven and just started sparking on contact with the blades.

Posted by on

  • Craig Butler
    Craig Butler May 11, 2010

    Is it possible that she saw the high voltage ignitor arching to light the oven?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 116 Answers

SOURCE: Double oven / convection not working

It is likely that the convection element is burned out and needs to be replaced. If all other functions are working then this is the place to start. Teh back panel inside of the oven can be removed by removing the 4 visible philips screws on it. The element should look smooth and round, if not then it needs to be replaced. Be sure to turn power off to the oven before replacing it. Remove the screws that fasten the element to the back wall and gently pull the element away from the wall an inch or so. the wires will be exposed and can be unclipped from the element do not let them fall inside of the back of the oven or you will have to remove the oven from the wall to get at the back panel. Install the new element in the reverse procedure. If the element looks good then it will have to be tested with a multimeter to verify that it is still good before proceeding to check the selector switch for burn marks.

Posted on Mar 11, 2007

SOURCE: bosch oven

looks as though youre circotherm element has blown (open circuit) you will need to remove oven and check with multimeter should read around 35-37 ohms on 2.5 kilowatt heater if open circuit will need replacing easy to do on most ovens and no too expensive around £30-£35 for element depends on model and output power.

hope this helps

Posted on Jan 18, 2008

barkencoa
  • 3463 Answers

SOURCE: Oven is not heating...the convection fan blows, but no heat

If the oven is electric and fan assisted,then I would suggest that the oven fan element is faulty.
Plz rate this solution.
thanks.

Posted on Dec 17, 2008

  • 491 Answers

SOURCE: Hi experts. I have a Bosch Oven Model: HBL 745 A

FIRST CHECK FOR ANY BURNT WIRES THEN REPLACE THE HEATING COIL AND TERMOSTATS AND YOUR OVEN SHOULDWORK FINE, BUT MAKE SURE YOU CHECK ALL WIRING FIRST.

Posted on Nov 08, 2009

TheMobilian
  • 8220 Answers

SOURCE: I have a Bosch HBN 455 double oven with the

All the controls are on the top. Using self clean excessively causes damage to electronic circuits.I do no advise the usage of self clean especially for something as complex and expensive as this bad bot. I have the repair manual for this oven. I am trying to get it to download where I can send it to you. It is 55 megs. I need you to comment back so I can have a way to link it to you when I get it loaded to Gdocs. Dang computers. Wish I had a faster one but I fix stoves not pcs. LOL Whats gonna happen is My 30 minutes is gonna be up before I can get you the document. Waiting for your reply.

Posted on Dec 29, 2009

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1 Answer

Oven burning food


Don't worry my wife does the same thing. Not sure if your talking about the range top or the baking potion. We'll assume the baking area. If your using cheap bakeware that could be part of the problem try using a different cake or loaf pan of heavy construction. Also you may try reducing your temp in 25 degree increments to see if your oven runs hot. Example buy 3 cheap frozen pizzas and if they say value at 400 try 375 , 350, and 325. If one of those temps gives the desired result assist accordingly and consider contracting Bosch customer service to inquire about how to fix thermostat errors.hope that helps I didn't have much to work with.

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Do you have one of those microwaves with the built in broil and bake unit where you would pull the pan out from the top?! If so, I don't know! :o ....but based on my experience in making pizzas, I strongly recommend that you put it on for 5 minutes intervals at about 375 degrees (+/- 25 degrees) and check it until the cheese in the middle is melted. I would NOT recommend putting it directly in the microwave using infrared radiation bc pizza like that tastes really bad. In an oven, put the pizza on for about 15 minutes and check every 3-5 min after that.

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Open the oven and make sure it is empty nod one rack is near the middle level. Turn the knob that says OFF to BAKE. Then turn the knob with all the numbers to the temperature that Theo Sri toons on the box tell you to use. Allow the oven to heat up for 10 minutes. It may beep when it is up to temp or a red light will turn off to let you know it is ready. Put the pizza in the oven on middle rack. Take it out according to box instructions ( usually 8 to 15 minutes). That pizza out by sliding it onto a plate. Turn off the oven and eat the pizza. If it is not done completely, leave it in longer next time. Enjoy

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When set to bake eg: 350 degrees the audio alarm will indicate it's reached temp but the oven is 50- 75 degrees lower. Must wait another 15 min for it to reach the proper temp. Have tried to adjust the off...


If you are monitoring the oven temperature with an analog style thermometer you may actually be ok, but seeing the thermometers slow reaction time.
Some newer ovens actually do pre-heat beep prior to reaching temp in an effort to conserve eelectricity.
A good home test is to try your oven at several different temps to see if there is any variation in internal temperature. Try it one day on 300, the next at 375 and another day at 450. Give your analog style thermometer time to catch up (usually just about 15 min) and leave it on for a half an hour to see if the temp maintains.
Also Beware of aluminum foil AND THE NEW OVEN LINER MATS as they can alter oven performance bay absorbing and blocking the ovens natural heat radiation and convection air flow currents that happen in all ovens, not just convection models.
Another interesting fact is that older ovens used a thermostat in them that operated much like your thermometer and was very slow to react making the oven typically about 100 degrees hotter than where the customer set it. This was just a fact of life before the advent of electronic temperature management and became noticeable when people began trying to bake older "hand me down" recipes in the newer ovens with less than stellar results.
You can mimic the older oven performance by preheating the oven about a hundred degrees higher than called for and after it reaches temp, re-set it to the correct temperature and put the items in right away.
If you find your temperatures fluctuating ask your servicer to replace first the temp sensor and as a last resort the control board as this part is usually pretty expensive.
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http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5153992&diagram_id=1251523#d1251523
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    You may get fooled into thinking it's working, because the oven is hot inside. But many electric ovens use the broil element, too, during the preheat and bake cycles. So the food may be getting heated only by the broil element, which causes poor baking results.

    If the bake element is burned out, replacing it should solve the problem. Otherwise, you need to further troubleshoot the oven's electrical system to locate the defective wire or component.

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