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Radio interference from Bryant hi-ef furnace.

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Radio interference from Bryant hi-ef furnace. BlackHawk96 02-11-2007
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Posted by BlackHawk96 on February 19, 2007, 9:34 am

SNIP

>> Knowing that the capacitor is used all the time is helpful. If no one
>> has a better idea, I will be changing the capacitor soon. Do you think
>> I could use the capacitor from an old microwave
>
>Deffinatly not! capacitor must match value of one that is on
>the unit presently

Thanks for the advice, DIDO.

I have another furnace which is a year younger, with a different
control board. If the capacitor on that unit is identical, I will use
it for the test.

Sincerely, BlackHawk
>
>
>I have, as a temporary
>> replacement to see if the capacitor is the problem? It is a lot
>> bigger so I would imagine that its capacity will be greater. I would
>> guess that that wouldn't hurt. I can provide you with the exact
>> specifications, if necessary. I for sure don't want to burn out the
>> motor.
>>
>> I will be sure to ground the capacitor before I work on it, if you
>> tell me that I don't have to worry about damaging the motor or other
>> electronics by doing that. I could, of course, CAREFULLY disconnect
>> the leads to the capacitor before I grounded the capacitor terminals.
>>
>> Sincerely, BlackHawk
>


Posted by Oscar_Lives on February 19, 2007, 10:28 am

>
> SNIP
>
>>> Knowing that the capacitor is used all the time is helpful. If no one
>>> has a better idea, I will be changing the capacitor soon. Do you think
>>> I could use the capacitor from an old microwave
>>
>>Deffinatly not! capacitor must match value of one that is on
>>the unit presently
>
> Thanks for the advice, DIDO.
>
> I have another furnace which is a year younger, with a different
> control board. If the capacitor on that unit is identical, I will use
> it for the test.
>
> Sincerely, BlackHawk


Why don't you quit fucking with stuff you don't understand and get it fixed
by a pro?



Posted by -zero on February 11, 2007, 5:02 pm

> Hi Group,
> I'm hoping that someone will have some idea of what is most likely
> causing radio interference every time my Bryant hi-ef gas furnace
> lights up. When I first noticed it about a month ago the pronounced
> static would last for about 5 seconds. Now it's more like 30 seconds.
> I replaced the ignitor, and that wasn't it. The big capacitor is my
> next guess. Any thoughts from you experts will be greatly appreciated.

I recall this discussed before, don't remember the final answer.

http://groups.google.com/groups/search?lr=lang_en&safe=off&num=50&q=radio+interferance+carrier+group%3Aalt.hvac&safe=off

-zero



Posted by Ken on February 12, 2007, 8:37 am
BlackHawk96 wrote:
> Hi Group,
> I'm hoping that someone will have some idea of what is most likely
> causing radio interference every time my Bryant hi-ef gas furnace
> lights up. When I first noticed it about a month ago the pronounced
> static would last for about 5 seconds. Now it's more like 30 seconds.
> I replaced the ignitor, and that wasn't it. The big capacitor is my
> next guess. Any thoughts from you experts will be greatly appreciated.

        You should always start with radio interference problems establishing
that the unit is grounded. It could well be a component, but many
circuits count on the ground to shield other circuits from RFI.

        Also, don't count on the installer as having grounded the unit. I had
to tell mine to do so even though the installation instructions clearly
specified they should do so.

Posted by BlackHawk96 on February 15, 2007, 1:32 am

>BlackHawk96 wrote:
>> Hi Group,
>> I'm hoping that someone will have some idea of what is most likely
>> causing radio interference every time my Bryant hi-ef gas furnace
>> lights up. When I first noticed it about a month ago the pronounced
>> static would last for about 5 seconds. Now it's more like 30 seconds.
>> I replaced the ignitor, and that wasn't it. The big capacitor is my
>> next guess. Any thoughts from you experts will be greatly appreciated.
>
>        You should always start with radio interference problems establishing
>that the unit is grounded. It could well be a component, but many
>circuits count on the ground to shield other circuits from RFI.
>
>        Also, don't count on the installer as having grounded the unit. I had
>to tell mine to do so even though the installation instructions clearly
>specified they should do so.

Thanks for the advice Ken.

I checked the wiring and the furnace is properly grounded, at least by
visual inspection. Do you have any other ideas?

Sincerely, BlackHawk

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