Furnace Kicks On and Off and On and...
 

While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

-F

Nope. Not normal. If you know nothing of furnace repairs call a reputable
repair company. It could be one of several things, but most likely a bada
thermo-couple fo some sort that is causing the burner to shut down before
the blower comes on. I'd get it looked into before the really cold weather
hits!


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

-F

Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

-F

Fleemo wrote:
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

Nope, definitely not normal. Could be a number of things (bad flame sensor
among them).

Here is some troubleshooting help -- however, gas isn't something for the
untrained DIYer to mess with. I'd recommend you call a professional.

http://toad.net/~jsmeenen/gasvalve.html

Fleemo wrote:
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

-F
Hi,
How about starting with your furnace model?
Tony

"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

-F


Not enough info to even begin to tell you where to look, but as others have
suggested, if you are not familiar with the operation and sequence of proper
events, call a company, and make sure they are licenced and insured.

On 22 Nov 2004 09:48:25 GMT, TaskProperties
wrote:

(Fleemo) wrote in
. com:

While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?

-F

Mine was doing that. It was the thermostat doing it.


There is a long list of possible causes. The least likely of all of
these is the thermostat.

Gary R. Lloyd CMS
HVACR Troubleshooting Books/Software
http://www.techmethod.com

041121 1403 - Fleemo posted:

While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off. About 30 seconds later it
repeats the process, over and over and over again. Only occasionally
did the blower kick on where hot air was pushed through the house.

I don't know a dang thing about furnaces, but this can't be normal
functioning of the furnace, can it?



In general, there are two limit switches in the furnace plenum: the fan
limit, and the gas solenoid high heat limit. It is obvious, in your case,
that the fan limit is set too high and the heat in the plenum is rising
above this setting to a point that the gas valve high limit is tripping the
gas valve closed. When it cools, it turns the gas valve back on again and
this cycle repeats. Find the fan limit and set it lower, maybe around 140
degrees and see if that will make a difference. From your description, it
is obviously not the room thermostat. If you cannot change the settings on
the fan limit switch, maybe it is broken and needs replacing.

Hmm. If you rectifier, that mean you put it out? (say it slow: Wrecked the
fire)

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HeatMan" wrote in message
. ..
Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off.

Boy, you ain't got a clue.

If you were truing to be funny, you missed.


"Stormin Mormon" wrote in message
...
Hmm. If you rectifier, that mean you put it out? (say it slow: Wrecked the
fire)

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HeatMan" wrote in message
. ..
Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off.

"HeatMan" wrote in message
.. .
Boy, you ain't got a clue.

If you were truing to be funny, you missed.


Sad part is that Chris was serious, and I really hope NO ONE in here is
taking anything hes got to say serious...

In these parts, he would have already been arressted for contracting without
a licnece.


"Stormin Mormon" wrote in message
...
Hmm. If you rectifier, that mean you put it out? (say it slow: Wrecked
the
fire)

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HeatMan" wrote in message
. ..
Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off.

"Steve@carolinabreezehvac" wrote
in message ...

"HeatMan" wrote in message
.. .
Boy, you ain't got a clue.

If you were truing to be funny, you missed.


Sad part is that Chris was serious, and I really hope NO ONE in here is
taking anything hes got to say serious...

In these parts, he would have already been arressted for contracting
without
a licnece.


Here too.

Except it would have been a license....

"HeatMan" wrote in message
.. .

"Steve@carolinabreezehvac" wrote
in message ...

"HeatMan" wrote in message
.. .
Boy, you ain't got a clue.

If you were truing to be funny, you missed.


Sad part is that Chris was serious, and I really hope NO ONE in here is
taking anything hes got to say serious...

In these parts, he would have already been arressted for contracting
without
a licnece.


Here too.

Except it would have been a license....


typos....typos...

How about starting with your furnace model?

It's an old Payne, model #518A036CC.

Not enough info to even begin to tell you where to look, but as
others have
suggested, if you are not familiar with the operation and sequence of
proper
events, call a company, and make sure they are licenced and insured.

Called several over the past few days. Most have not even bothered to
return the phone call, while the others say it'll be the end of next
week before they can make a service call.

Find the fan limit and set it lower, maybe around 140 degrees and see
if that will make a difference.

Anywhere online where I might see a photo or diagram of what the fan
limit looks like? I'd rather attempt a simple fix first, and if that
doesn't work, wait ten days for a pro.

From your description, it is obviously not the room thermostat.

Yeah, I don't think it's the thermostat, otherwise wouldn't the blower
be kicking on and off too? I noticed today that when I turned the
thermostat down (from 72 to 68) the cycling stopped. But as soon as I
set it back to 72, it started continuously cycling again.

-F

"Stormin Mormon" wrote in message
...
Hmm. If you rectifier, that mean you put it out? (say it slow: Wrecked the
fire)

--

Heatman, unlike you Chris, knows what he is talking about and in this case,
you are wrong, and hes right...about the term used...

Dumbass is too nice a term for you.

Say it slow...dum ahssss


Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HeatMan" wrote in message
. ..
Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off.

"Fleemo" wrote in message
om...
How about starting with your furnace model?

It's an old Payne, model #518A036CC.

Looked it up...limited support from Carrier.


Not enough info to even begin to tell you where to look, but as
others have
suggested, if you are not familiar with the operation and sequence of
proper
events, call a company, and make sure they are licenced and insured.

Called several over the past few days. Most have not even bothered to
return the phone call, while the others say it'll be the end of next
week before they can make a service call.

Depending on your part of the country, thats normal for this time of year...
Also, since the election, this trades business has taken off for the better
companies.



Find the fan limit and set it lower, maybe around 140 degrees and see
if that will make a difference.

Anywhere online where I might see a photo or diagram of what the fan
limit looks like? I'd rather attempt a simple fix first, and if that
doesn't work, wait ten days for a pro.

and you should, since if you dont know what it looks like, or even if you
have one, you can create more damage than you have now.
Not all of those old Carrier/Payne units had them.
Particularly since the blowers were on timers that were hardwired into the
controls.


From your description, it is obviously not the room thermostat.

Yeah, I don't think it's the thermostat, otherwise wouldn't the blower
be kicking on and off too? I noticed today that when I turned the
thermostat down (from 72 to 68) the cycling stopped. But as soon as I
set it back to 72, it started continuously cycling again.

-F

Depends onthe thermostat you have. While the least likely item would be the
stat, its possible you are #10, and 9 out of 10 issues are not the
thermostat, perhaps your numbers up.
Wait a bit, get the tech to check it.

041124 0315 - Fleemo posted:

How about starting with your furnace model?

It's an old Payne, model #518A036CC.

Not enough info to even begin to tell you where to look, but as
others have
suggested, if you are not familiar with the operation and sequence of
proper
events, call a company, and make sure they are licenced and insured.

Called several over the past few days. Most have not even bothered to
return the phone call, while the others say it'll be the end of next
week before they can make a service call.

Find the fan limit and set it lower, maybe around 140 degrees and see
if that will make a difference.

Anywhere online where I might see a photo or diagram of what the fan
limit looks like? I'd rather attempt a simple fix first, and if that
doesn't work, wait ten days for a pro.

From your description, it is obviously not the room thermostat.

Yeah, I don't think it's the thermostat, otherwise wouldn't the blower
be kicking on and off too? I noticed today that when I turned the
thermostat down (from 72 to 68) the cycling stopped. But as soon as I
set it back to 72, it started continuously cycling again.

-F

Check this out for starters...

http://toad.net/~jsmeenen/blower.html

"Steve@carolinabreezehvac" wrote
in message ...

"Stormin Mormon" wrote in message
...
Hmm. If you rectifier, that mean you put it out? (say it slow: Wrecked
the
fire)

--

Heatman, unlike you Chris, knows what he is talking about and in this
case,
you are wrong, and hes right...about the term used...

Dumbass is too nice a term for you.

Say it slow...dum ahssss


You on drugs or something?



Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HeatMan" wrote in message
. ..
Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and they
burn for about 15 seconds, then shut off.

"HeatMan" wrote in message
.. .

"Steve@carolinabreezehvac" wrote
in message ...

"Stormin Mormon" wrote in message
...
Hmm. If you rectifier, that mean you put it out? (say it slow: Wrecked
the
fire)

--

Heatman, unlike you Chris, knows what he is talking about and in this
case,
you are wrong, and hes right...about the term used...

Dumbass is too nice a term for you.

Say it slow...dum ahssss


You on drugs or something?

Not really...I dont do that ****.
Dont drink either...but Chris has to be on them...




Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HeatMan" wrote in message
. ..
Maybe a flame rectification problem....


"Fleemo" wrote in message
om...
While working in the garage yesterday, I noticed that my furnace is
cycling on and off *constantly*. I hear the gas jets kick on and
they
burn for about 15 seconds, then shut off.