Question about Bosch DAH9505 30in Traditional Wall Updraft, Stainless Steel, Half-Round Bullnose Style Kitchen Hood

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Bosch DAH9505 Hood Auto-On

I have a Bosch DAH9505 Hood, which supposedly has a thermal switch that will turn the fan on, at its lowest setting, if it detects a temperature above a certain setpoint.

I'd like to be able to lower that setpoint, or even better, find a way to trigger it by some other means like a motion sensor (aimed at the stove).

The problem I'm trying to solve is that more often than not, the user forgets to turn the unit on when cooking, which rather defeats the purpose.

In fact, the perfect solution would be to somehow trigger the fan (preferably the medium or even high setting) just by turning the stove on.

Ideas?

I have a friend who is an electrical engineer who, with a wiring schematic, could no doubt devise a (safe) way to do this if you don't know of a solution, but I would need to find a schematic.

Thanks!

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Bosch HBN 455 Oven Cooling-Fan Issue

Our HBN655 had similar issues- the upper cooling fan would cycle on and off on a relatively quick duty cycle until the whole mess cooled off enough and it shut off.
My workaround is to turn the temperature dial off but leave the oven function dial on to BAKE. This seems to force the fan to stay on; then we shut it off a while later and avoid the annoying fan cycling.
(note- 2 years ago, our fan became intermittent, varying speed, etc... for about 2 months before it quit entirely. When that happened, the oven started to heat then the thermal cutout kicked in and the oven shut down entirely. We ended up replacing the fan and that fixed the bug... except now it's starting to act up again...)
(also note- the racks on this beast have a faulty design. if you have a heavy casserole and slide the rack out all the way, it tends push the sidewalls apart and the rack drops. I spoke with Bosch about this and they sent me new racks, no charge... so they know there's a problem. But the new racks don't fix the bug; they just make it harder to reproduce. I have actually had one rack fall with 2 piping hot casseroles on it. Fortunately no one was hurt.)

Posted on Nov 04, 2007

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SOURCE: Fridge not getting cold Bosch KGV36390/05

Hi: It shouldn't need a recharge as your freezer is cold, and that's wher the fresh food section gets its cold from via a fan. If your vents are blocked with too much food in the freezer this will happen. If you have a problem with the defrost heater or timer frost will build and block the port to the fan, causing a warm fresh food section. If the circulating fan is out your f.f. section will get warm. It's a small fan not to be confused with the condenser fan below (at the grill.) Here's a question for you. Did the fresh food compartment work for the first week or two? That's how long it would take frost to build and jam the system if your defrost system is out. If this is the case you can unplug it and put your food in a cooler. Melt the frost with a hair dryer carefully avoiding plastic components. It will then work for a week or two before it fails again. It will get you buy until you get service. If you do it yourself... Look for the defrost heater in the freezer and see if the coil of wire in the glass tube is broken. You will need a service manuals or a parts list with a diagram. Sears parts on line has a good database of parts and diagrams. Hope this helped, Jeff

Posted on Jun 01, 2009

bobhifi
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SOURCE: We have a problem with two of the burners on our

Remove the brass burner heads.Remove the Butterfly nut ( in some models just a screw ) and remover the cast iron base.At the narrow end there is a nozzle with a small pin hole which couples with this pipe. Take a fine needle or pin and insert into the small hole and clean. Reassemble and Voila !!!! bobhifi.jpg

Posted on Mar 07, 2011

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