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Posted by on February 21, 2007, 2:35 pm
Hi All,
Our furnace is a Bryant 90 High Efficiency (power vent) and it is
about 18 years old. When the furnace is switched off then on (from
either the power switch or thermastat) it will run one complete cycle
without any problems (the burn piece of the cycle is about 5 minutes)
then everything shuts off and doesn't re-start. If I run a self test
on the furnace, it cycles through each of the components
successfully. The problem is that it simply will not re-start on its
own (even though the temparature is 20+ degrees below the temparature
on the thermastat).
I had the furnace specialist out (and paid the $145 for 45
minutes of looking) and was told we need a new furnace. I'm not ready
to give up yet. All of the pieces cycle correctly, but only once.
Unfortunately, only my wife was home when the furnace person was
there. According to the bill he cleaned some leaves from the intake
and made some adjustments. The carbon monoxide reading he took was 20
ppm and he said it went down to 16 ppm by the time he left.
Due to the elevated carbon monoxide reading, I assumed that
clogging of the intake pipe may have really been an issue, but even
after whatever the HVAC guy did, the furnace behaves exactly the same.
I know my furnace is on the old end, but I would like to
squeeze another winter or two out of it if I can.
Any Ideas?
Thanks,
--Greg
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Posted by on February 21, 2007, 2:50 pm
On 21 Feb 2007 11:35:28 -0800, gregory.hawkins@gmail.com wrote:
>Hi All,
> Our furnace is a Bryant 90 High Efficiency (power vent) and it is
>about 18 years old. When the furnace is switched off then on (from
>either the power switch or thermastat) it will run one complete cycle
>without any problems (the burn piece of the cycle is about 5 minutes)
>then everything shuts off and doesn't re-start. If I run a self test
>on the furnace, it cycles through each of the components
>successfully. The problem is that it simply will not re-start on its
>own (even though the temparature is 20+ degrees below the temparature
>on the thermastat).
> I had the furnace specialist out (and paid the $145 for 45
>minutes of looking) and was told we need a new furnace. I'm not ready
>to give up yet. All of the pieces cycle correctly, but only once.
>Unfortunately, only my wife was home when the furnace person was
>there. According to the bill he cleaned some leaves from the intake
>and made some adjustments. The carbon monoxide reading he took was 20
>ppm and he said it went down to 16 ppm by the time he left.
> Due to the elevated carbon monoxide reading, I assumed that
>clogging of the intake pipe may have really been an issue, but even
>after whatever the HVAC guy did, the furnace behaves exactly the same.
> I know my furnace is on the old end, but I would like to
>squeeze another winter or two out of it if I can.
> Any Ideas?
Ummm... call another company to look at it ????
WTF do you expect here ? You've just todl us that you don't
have a FUCKING CLUE how to work on the thing, let alone do it safely,
and you want WHAT ? PFM ????
> Thanks,
> --Greg
--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/
Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
'With sufficient thrust, pigs fly just fine.'
HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/
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Posted by on February 21, 2007, 3:29 pm
On Feb 21, 1:50 pm, .p.jm@see_my_sig_for_address.com wrote:
> On 21 Feb 2007 11:35:28 -0800, gregory.hawk...@gmail.com wrote:
> >Hi All,
> > Our furnace is a Bryant 90 High Efficiency (power vent) and it is
> >about 18 years old. When the furnace is switched off then on (from
> >either the power switch or thermastat) it will run one complete cycle
> >without any problems (the burn piece of the cycle is about 5 minutes)
> >then everything shuts off and doesn't re-start. If I run a self test
> >on the furnace, it cycles through each of the components
> >successfully. The problem is that it simply will not re-start on its
> >own (even though the temparature is 20+ degrees below the temparature
> >on the thermastat).
> > I had the furnace specialist out (and paid the $145 for 45
> >minutes of looking) and was told we need a new furnace. I'm not ready
> >to give up yet. All of the pieces cycle correctly, but only once.
> >Unfortunately, only my wife was home when the furnace person was
> >there. According to the bill he cleaned some leaves from the intake
> >and made some adjustments. The carbon monoxide reading he took was 20
> >ppm and he said it went down to 16 ppm by the time he left.
> > Due to the elevated carbon monoxide reading, I assumed that
> >clogging of the intake pipe may have really been an issue, but even
> >after whatever the HVAC guy did, the furnace behaves exactly the same.
> > I know my furnace is on the old end, but I would like to
> >squeeze another winter or two out of it if I can.
> > Any Ideas?
> Ummm... call another company to look at it ????
> WTF do you expect here ? You've just todl us that you don't
> have a FUCKING CLUE how to work on the thing, let alone do it safely,
> and you want WHAT ? PFM ????
> > Thanks,
> > --Greg
> --
> Click here every day to feed an animal that needs you today
!!!http://www.theanimalrescuesite.com/
> Paul ( pjm @ pobox . com ) - remove spaces to email me
> 'Some days, it's just not worth chewing through the restraints.'
> 'With sufficient thrust, pigs fly just fine.'
> HVAC/R program for Palm PDA's
> Free demo now available onlinehttp://pmilligan.net/palm/- Hide quoted text -
> - Show quoted text -
Hi Paul,
At any point did I say that I wanted to do the work myself or
that I was qualified to do it?
If I was qualified to do that work (and analysis) myself, why
would I write the question? Obviously I don't know what I am talking
about. I simply wanted to know if someone might have a clue from the
description what a likely cause would be.
When I do call out the next person, I would discuss the
possibilities with them. If the general consensus was that I needed
to replace the furnace, I would have to do it.
Thanks for your help,
--Greg
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Posted by Steve Scott on February 21, 2007, 4:38 pm
At 18 years, it really is time to consider replacing the furnace.
BTW, 20ppm CO air free is a very minimal reading. Maximum allowable
is 400ppm air free. We like to see any new equipment at a max of
about 50ppm air free.
On 21 Feb 2007 11:35:28 -0800, gregory.hawkins@gmail.com wrote:
>Hi All,
> Our furnace is a Bryant 90 High Efficiency (power vent) and it is
>about 18 years old. When the furnace is switched off then on (from
>either the power switch or thermastat) it will run one complete cycle
>without any problems (the burn piece of the cycle is about 5 minutes)
>then everything shuts off and doesn't re-start. If I run a self test
>on the furnace, it cycles through each of the components
>successfully. The problem is that it simply will not re-start on its
>own (even though the temparature is 20+ degrees below the temparature
>on the thermastat).
> I had the furnace specialist out (and paid the $145 for 45
>minutes of looking) and was told we need a new furnace. I'm not ready
>to give up yet. All of the pieces cycle correctly, but only once.
>Unfortunately, only my wife was home when the furnace person was
>there. According to the bill he cleaned some leaves from the intake
>and made some adjustments. The carbon monoxide reading he took was 20
>ppm and he said it went down to 16 ppm by the time he left.
> Due to the elevated carbon monoxide reading, I assumed that
>clogging of the intake pipe may have really been an issue, but even
>after whatever the HVAC guy did, the furnace behaves exactly the same.
> I know my furnace is on the old end, but I would like to
>squeeze another winter or two out of it if I can.
> Any Ideas?
> Thanks,
> --Greg
--
If it's not actually on fire, it's a
software problem.
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Posted by on February 21, 2007, 8:32 pm
>At 18 years, it really is time to consider replacing the furnace.
Ummm where I live furnace replacement usually occurs around the 25-30
yr mark. AC's wear out faster than furnaces.....
you do know why he was recommended a new furnace......the sales
technician makes a comfy commission on a sale of new equipment and not
so rosy of a commission on fixing something. so hell yeah sell them a
new furnace!
>BTW, 20ppm CO air free is a very minimal reading. Maximum allowable
>is 400ppm air free. We like to see any new equipment at a max of
>about 50ppm air free.
>On 21 Feb 2007 11:35:28 -0800, gregory.hawkins@gmail.com wrote:
>>Hi All,
>> Our furnace is a Bryant 90 High Efficiency (power vent) and it is
>>about 18 years old. When the furnace is switched off then on (from
>>either the power switch or thermastat) it will run one complete cycle
>>without any problems (the burn piece of the cycle is about 5 minutes)
>>then everything shuts off and doesn't re-start. If I run a self test
>>on the furnace, it cycles through each of the components
>>successfully. The problem is that it simply will not re-start on its
>>own (even though the temparature is 20+ degrees below the temparature
>>on the thermastat).
>> I had the furnace specialist out (and paid the $145 for 45
>>minutes of looking) and was told we need a new furnace. I'm not ready
>>to give up yet. All of the pieces cycle correctly, but only once.
>>Unfortunately, only my wife was home when the furnace person was
>>there. According to the bill he cleaned some leaves from the intake
>>and made some adjustments. The carbon monoxide reading he took was 20
>>ppm and he said it went down to 16 ppm by the time he left.
>> Due to the elevated carbon monoxide reading, I assumed that
>>clogging of the intake pipe may have really been an issue, but even
>>after whatever the HVAC guy did, the furnace behaves exactly the same.
>> I know my furnace is on the old end, but I would like to
>>squeeze another winter or two out of it if I can.
>> Any Ideas?
>> Thanks,
>> --Greg
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> Our furnace is a Bryant 90 High Efficiency (power vent) and it is
>about 18 years old. When the furnace is switched off then on (from
>either the power switch or thermastat) it will run one complete cycle
>without any problems (the burn piece of the cycle is about 5 minutes)
>then everything shuts off and doesn't re-start. If I run a self test
>on the furnace, it cycles through each of the components
>successfully. The problem is that it simply will not re-start on its
>own (even though the temparature is 20+ degrees below the temparature
>on the thermastat).
> I had the furnace specialist out (and paid the $145 for 45
>minutes of looking) and was told we need a new furnace. I'm not ready
>to give up yet. All of the pieces cycle correctly, but only once.
>Unfortunately, only my wife was home when the furnace person was
>there. According to the bill he cleaned some leaves from the intake
>and made some adjustments. The carbon monoxide reading he took was 20
>ppm and he said it went down to 16 ppm by the time he left.
> Due to the elevated carbon monoxide reading, I assumed that
>clogging of the intake pipe may have really been an issue, but even
>after whatever the HVAC guy did, the furnace behaves exactly the same.
> I know my furnace is on the old end, but I would like to
>squeeze another winter or two out of it if I can.
> Any Ideas?