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Ignitor failure rfofaky 12-29-2007
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Posted by rfofaky on December 29, 2007, 5:45 pm
I have a customer who's ignitor I replaced 3 times in the last 3 years.
Everything seems ok. Proper voltage, no major vibration when running,
polarity ok. The only thing I noticed was a loose ground wire in a junction
box near the unit. But I don't see how a loose ground wire could cause
premature failure of an ignitor. Any idea's? Its a comfortmaker furnace.
Thanks.



Posted by Bubba on December 30, 2007, 10:39 am
wrote:

>I have a customer who's ignitor I replaced 3 times in the last 3 years.
>Everything seems ok. Proper voltage, no major vibration when running,
>polarity ok. The only thing I noticed was a loose ground wire in a junction
>box near the unit. But I don't see how a loose ground wire could cause
>premature failure of an ignitor. Any idea's? Its a comfortmaker furnace.
>Thanks.
>

Moisture from the intake pipe when it hits the hot burner area?
Is the air conditioner directly below the intake pipe?
Switch the igniter to one of the aftermarket silicon nitrite
replacements that they show you can hammer into wood.
Bubba

Posted by Joseph on December 30, 2007, 5:27 pm
>I have a customer who's ignitor I replaced 3 times in the last 3 years.
Everything
>seems ok. Proper voltage, no major vibration when running, polarity ok. The only
>thing I noticed was a loose ground wire in a junction box near the unit. But I
don't
>see how a loose ground wire could cause premature failure of an ignitor. Any
idea's?
>Its a comfortmaker furnace.
> Thanks.

When the HSI's became popular, I was told by a furnace mfg's rep that they
would
become
a maintenance problem. I think he was right in that they are susceptible to
failure
from numerous sources. Vibrations(as you mentioned), late combustion, humidity,
imperfections in mfg(burn outs), over stressed on installation, oils from
touching
element(creates hot spot on
element). I used to carry almost a dozen on the van. At one point I think it
was in
the top 5 furnace service problems(not counting plugged filters,switching from
cool to
heat and changing batteries...LOL). IIRC, I think someone on the group
mentioned long
time back that they had stated replacing them and the relays on the furnace as a
part
of installation.

I agree with Bubba, retro it to one of these... http://tinyurl.com/2zeo7s

Joseph



Posted by on December 30, 2007, 6:03 pm
wrote:

>>I have a customer who's ignitor I replaced 3 times in the last 3 years.
Everything
>>seems ok. Proper voltage, no major vibration when running, polarity ok. The
only
>>thing I noticed was a loose ground wire in a junction box near the unit. But
I don't
>>see how a loose ground wire could cause premature failure of an ignitor. Any
idea's?
>>Its a comfortmaker furnace.
>> Thanks.
>
> When the HSI's became popular, I was told by a furnace mfg's rep that they
would
>become
>a maintenance problem. I think he was right in that they are susceptible to
failure
>from numerous sources. Vibrations(as you mentioned), late combustion,
humidity,
>imperfections in mfg(burn outs), over stressed on installation, oils from
touching
>element(creates hot spot on
>element). I used to carry almost a dozen on the van.

        Yep. And ONE generic Honeywell spark module. Go figure :-)



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