Gas oven jamming garage door opener remotes???


Has anyone ever hear of something like this? Does it sound like defective oven? How to fix???
My neighbor just had a set of new garage door openers installed. The remotes didn't work. Installer couldn't figure it out. Gave up and removed openers.
Second guy with different openers had same problem but finally traced it to the Kitchen Aid Superba gas oven (NOT microwave) since everything works fine once the oven is unplugged. I THINK the oven is on a different circuit than the openers. It seems to be putting out some frequency that is jamming the remotes. The oven does not have to be on to jam, just plugged it. Installer says he's never seen a problem like it.
What could cause an oven to do this???
Thanks for any comments or suggestions.
Joy
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Reporting back to its home planet?
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Mork calling Orson!
--
Christopher A. Young You can't shout down a troll. You have to starve them. .
What could cause an oven to do this???<BR><BR>Reporting back to its home planet?<BR><BR><BR></BLOCKQUOTE></BODY></HTML>
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Joy, 3/31/2007,10:21:54 PM, wrote:

The only thing I can think of would be that the range's electronics are so messed up that it is emitting much electrical noise into the house's electrical wiring. Maybe the RF receiver of the garage door opener is too sensitive to noise and can't decipher the signal from the remotes.
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Joy wrote:

It sounds like the conrol circuitry of oven is emitting RF signal and swamping the garage door opener's receiver. If it has pig tail antenna, make it as short as posible and see. Or I know opener circuitry does not have good shielding but first thing to do is to contact oven manufacturer and FCC as well, I guess. Being a retired EE, I think I can tackle like this if it were in my neighborhood but really it is oven manufacturer's responsibility.
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Joy wrote:

You might try posting this issue at http://forum.kitchenaid.com /
Good Luck
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Joy; I am not familiar with your oven, so can only speak generally. I am also guessing you are in the US.
A lot of new appliances have electronic controls which contain a computer processor (CPU) and a display. Additionally something like a gas oven might contain an igniter. Those types of circuits can emit radio frequency energy. Since your oven does this when its not being used, I would suspect that the igniter is not the problem, but more likely the CPU or display, or a perhaps it's power supply. A CPU has an oscillator clock which can run in the many megahertz. The display is also clocked and can radiate signals. I would guess that the proximity of the oven to your garage receiver is very close as in many homes the are.
First; If your garage door installer can install the receiver on a distant part of the house, yet still visible to the driveway, it may work.
Secondly; There are some avenues to consider which would start with lodging a formal complaint with the oven manufacturer and copying to the Federal Communications Commission OET Bureau. It is possible that the oven is generating excessive radio frequency interference (RFI), and the manufacturer should be interested in resolving this as they must comply to FCC rules (CFR47 Part 15). Those rules do permit some unintentional radiation, but since it appears that the level of interference is higher than permitted for an "intentional radiator" (Your garage door transmitter), it is possible the oven is operating outside FCC permissable specifications. Unfortunately, my experience with appliance manufacturers is that they hide behind a cloak of service subcontractors and once the product is out the door, getting the manufacturer to respond is nearly imposssible.
Third, the garage door opener normally operates in a frequency band which is also used for militrary and airforce communications, so the FCC should be concerned about a consumer product radiating a strong signal in that band. If they are doing their job, the FCC would at a minimum research the certifications for the oven to see if the manufacturer did the required testing. You would be surprised how many don't.
Finally; A more practical solution would be to find out if the garage door opener is available with a remote system operating in a different frequency band. It was recently necessary to modify many garage door openers because military bases nearby were installing new radio systems which created constant interference to garage door openers.
Joy wrote:

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"
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there goes the neighbor hood! ;-))
ragged band allocation sure does offer plenty of jobs and equipment opportunities, eh!

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we live within 600 yds of navy base, they do regular comms to who knows where, daily and frequently. local cable tv system was receiving plenty of what seemed to be quite interesting internal audio comms right into the line, that went right into our ears as we were viewing the various cable channels. cable guy kept ragging that we had bad receivers, navy denied it even was happening, talk about homeland security holes, yeee gads!
finally was cured when lightning strike toasted three stop band filters that had to be replaced on aerial line running to our neighbor hood.
made life fun at any rate.

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Joy wrote:

My gas stove burner spark igniter interferes with some things, but that only fires off when the burners are being lit. I have no idea what would cause it with the oven, those normally use a hot surface igniter. You could try plugging it into an RFI filter and see if that helps.
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Joy wrote:

Oh another thing came to mind, make sure the oven is properly grounded.
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James Sweet wrote:

Hi..
Wonder if a coupla ferrite beads on the power line feeding the receiver might help?
Take care
Ken
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Very good point!
James Sweet wrote:

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"
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Put a tinfoil beanie on the oven board. Might make one for yourself while you're at it. JR
Joy wrote:

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Home Page: http://www.seanet.com/~jasonrnorth
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