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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 Bubba on February 11, 2007, 7:00 pm
On 11 Feb 2007 21:43:38 GMT, DANgER (danger@heat.com) wrote:

>Blackhawk,
>
>First off, don't listen to bubba or oscar. They are both playing with you.
>We call those 2, trunk slammers in the trade. Incompetent, non-professionals!
>
>I would contact Bryant with the model, see if there is any reported problems.
>You need a model, series, product and serial number to get precise info.
>
>Could be the board itself. There have been several revisions.
>
>I have seen wifi routers that cause a furnace to lockout. Had an old limit
>control that would "chatter" and cause interference with the TV.
>
>Can you tell when the interference starts, relative to your furnace operation?
>Try to watch the sequence and see when exactly it happens.
>
>What capacitor? The fan motor capacitor?
>I don't see how a capacitor or an igniter could do that...
>
>-Canadian Heat

Yeah, like someone needs to listen to a parts changing hack like you
Canuck. Its the flux capacitor you moron. Dont you know anything.
Bubba

Posted by BlackHawk96 on February 12, 2007, 12:06 am
On 11 Feb 2007 21:43:38 GMT, DANgER (danger@heat.com) wrote:

>Blackhawk,
>
>First off, don't listen to bubba or oscar. They are both playing with you.
>We call those 2, trunk slammers in the trade. Incompetent, non-professionals!
>
>I would contact Bryant with the model, see if there is any reported problems.
>You need a model, series, product and serial number to get precise info.
>
>Could be the board itself. There have been several revisions.
>
>I have seen wifi routers that cause a furnace to lockout. Had an old limit
>control that would "chatter" and cause interference with the TV.
>
>Can you tell when the interference starts, relative to your furnace operation?
>Try to watch the sequence and see when exactly it happens.
>
>What capacitor? The fan motor capacitor?
>I don't see how a capacitor or an igniter could do that...
>
>-Canadian Heat

Thank you, Canadian Heat, for your feedback. I really appreciate your
insight.

Your suggestion to contact the mfr makes perfect sense. The radio
interference is so bad that it almost totally overcomes the signal
around 970 am, which is a weak channel to begin with. The intensity of
the interference is similar to a bell-shaped curve.
So I will take a portable radio with me to correlate it with the
furnace cycle. Hopefully Carrier will have some answers for me.

Arcing generates a lot of electromagnetic energy. That is why I
suspected the ignitor. If it were "letting go", it might be arcing.
That same logic would include the capacitor (I think it is the fan
motor capacitor). Here again your idea about the timing cycle is
invaluable.

Sincerely, BlackHawk


Posted by Bubba on February 12, 2007, 8:33 am
On Mon, 12 Feb 2007 00:06:15 -0500, BlackHawk96

>On 11 Feb 2007 21:43:38 GMT, DANgER (danger@heat.com) wrote:
>
>>Blackhawk,
>>
>>First off, don't listen to bubba or oscar. They are both playing with you.
>>We call those 2, trunk slammers in the trade. Incompetent, non-professionals!
>>
>>I would contact Bryant with the model, see if there is any reported problems.
>>You need a model, series, product and serial number to get precise info.
>>
>>Could be the board itself. There have been several revisions.
>>
>>I have seen wifi routers that cause a furnace to lockout. Had an old limit
>>control that would "chatter" and cause interference with the TV.
>>
>>Can you tell when the interference starts, relative to your furnace operation?

>>Try to watch the sequence and see when exactly it happens.
>>
>>What capacitor? The fan motor capacitor?
>>I don't see how a capacitor or an igniter could do that...
>>
>>-Canadian Heat
>
>Thank you, Canadian Heat, for your feedback. I really appreciate your
>insight.
>
>Your suggestion to contact the mfr makes perfect sense. The radio
>interference is so bad that it almost totally overcomes the signal
>around 970 am, which is a weak channel to begin with. The intensity of
>the interference is similar to a bell-shaped curve.
>So I will take a portable radio with me to correlate it with the
>furnace cycle. Hopefully Carrier will have some answers for me.
>
>Arcing generates a lot of electromagnetic energy. That is why I
>suspected the ignitor. If it were "letting go", it might be arcing.
>That same logic would include the capacitor (I think it is the fan
>motor capacitor). Here again your idea about the timing cycle is
>invaluable.
>
>Sincerely, BlackHawk

The Canuck invaluable? HaHaHa. Now Ive heard everything.
Happy hunting, BlackHawk.
DANgER is kind of the "jerk-off- poodle-dog" here.
Try not to take him too seriously. You could get hurt and cost
yourself a lot of money with his "witless" advice.
Bubba

Posted by DIDO on February 12, 2007, 8:49 am

> On 11 Feb 2007 21:43:38 GMT, DANgER (danger@heat.com) wrote:
>
>>Blackhawk,
>>
>>First off, don't listen to bubba or oscar. They are both playing with
>>you.
>>We call those 2, trunk slammers in the trade. Incompetent,
>>non-professionals!
>>
>>I would contact Bryant with the model, see if there is any reported
>>problems.
>>You need a model, series, product and serial number to get precise info.
>>
>>Could be the board itself. There have been several revisions.
>>
>>I have seen wifi routers that cause a furnace to lockout. Had an old
>>limit
>>control that would "chatter" and cause interference with the TV.
>>
>>Can you tell when the interference starts, relative to your furnace
>>operation?
>>Try to watch the sequence and see when exactly it happens.
>>
>>What capacitor? The fan motor capacitor?
>>I don't see how a capacitor or an igniter could do that...
>>
>>-Canadian Heat
>
> Thank you, Canadian Heat, for your feedback. I really appreciate your
> insight.
>
> Your suggestion to contact the mfr makes perfect sense. The radio
> interference is so bad that it almost totally overcomes the signal
> around 970 am, which is a weak channel to begin with. The intensity of
> the interference is similar to a bell-shaped curve.
> So I will take a portable radio with me to correlate it with the
> furnace cycle.

"Hopefully Carrier will have some answers for me."
lots luck
>
> Arcing generates a lot of electromagnetic energy. That is why I
> suspected the ignitor. If it were "letting go", it might be arcing.
> That same logic would include the capacitor (I think it is the fan
> motor capacitor). Here again your idea about the timing cycle is
> invaluable.
>
> Sincerely, BlackHawk
>



Posted by BlackHawk96 on February 15, 2007, 2:15 am
On 11 Feb 2007 21:43:38 GMT, DANgER (danger@heat.com) wrote:

>Blackhawk,
>>
>I would contact Bryant with the model, see if there is any reported problems.
>You need a model, series, product and serial number to get precise info.
>
>Could be the board itself. There have been several revisions.
>
>I have seen wifi routers that cause a furnace to lockout. Had an old limit
>control that would "chatter" and cause interference with the TV.
>
>Can you tell when the interference starts, relative to your furnace operation?
>Try to watch the sequence and see when exactly it happens.
>
>What capacitor? The fan motor capacitor?
>I don't see how a capacitor or an igniter could do that...
>
>-Canadian Heat

Thanks for your thoughts, Canadian Heat.

I emailed Bryant describing my problem, even though their website says
not to ask them technical questions. They say to call a Bryant
serviceman. I also asked them if I have one of the furnaces which has
the plastic laminated mild steel secondary heat exchanger instead of
stainless steel. I didn't mention the class action lawsuit which has
been brought against Carrier for defective materials in the secondary
heat exchanger.

I made careful note of when exactly the radio interference was being
produced during the cycle. I was surprised to find that it was not
being produced at or near the beginning of the cycle. It occurs some
time after 5 minutes into the cycle, one or more times per cycle, with
a duration ranging from 90 seconds to 5 minutes.

I pulled the control panel to have a better look at that big oval can
capacitor. It is definitely the fan motor capacitor. I'm a little
rusty on when those capacitors are in play. Am I wrong in assuming
that the capacito is only used to get the motor started? If the
capacitor was in play all the time the fan motor were running, that
would match more closely the static pattern observed. When I held my
walkman radio near that capacitor the static didn't get louder. It is
very hard to pinpoint the source of the RFI with the Walkman. My ears
may be playing tricks on me, but the gas valve seems to be the focus,
but that is a very close call.

I would appreciate hearing your insight on this.

Sincerely, BlackHawk

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