I have an old Honeywell gas burner furnace http://www.heatinghelp.com/files/articles/768/216.pdf that the blower won't shut off on. The furnace heats great, just won't shut off unless I shut the whole furnace down. Not a good thing when it's below 30 degrees, but have a gas fireplace been using to give the blower a break from time to time. This furnace has old mercury switches in it it's that old, and I'm desperate to not have to replace my furnace just yet. Please help!

"MeredithCaudill" wrote in message
...

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!

Is it the furnace or just the blower that won't shut down?

If it is the furnace, either the problem is with the thermostat or a relay
in the furnace controls is stuck on.

If it is the blower, either your thermostat has a blower switch that has
been turned on or a switch inside the furnace has been changed to ON. Or
possibly the fan limit switch inside the furnace controls is stuck in the on
position. Really, it does no harm for the blower to be on all the time. I
have kept my furnace fan running 24/7 for the past several years to improve
the air circulation and prevent the air from stratifying.

You have a VOM? Feel like doing some trouble
shooting?


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

"MeredithCaudill" wrote in message
...

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!




--
MeredithCaudill

On 12/26/2012 12:15 PM, EXT wrote:

"MeredithCaudill" wrote in
message ...

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!

Is it the furnace or just the blower that won't shut down?

If it is the furnace, either the problem is with the thermostat or a
relay in the furnace controls is stuck on.

If it is the blower, either your thermostat has a blower switch that has
been turned on or a switch inside the furnace has been changed to ON. Or
possibly the fan limit switch inside the furnace controls is stuck in
the on position.

That's an old system and you have no idea if it was installed the way
shown in the manual.
I'd suspect that the fan runs as long as the firebox temperature
is above some number. Suspect that thermal switch. And there may be
another switch that shorts across that which may be in the wrong position
or the wiring is shorted.

Really, it does no harm for the blower to be on all the
time.

Depends on your definition of harm. Just doing the math, leaving my
furnace blower on 24/7 would cost me $36/month in electricity.
I call that HARM with a capital H.

I have kept my furnace fan running 24/7 for the past several years
to improve the air circulation and prevent the air from stratifying.

The bottom line here is, even if you knew what was wrong, would you
have the skills and the tools and the motivation to fix it yourself.
And what would you do if you messed it up and the furnace quit working
entirely? Or you messed it up differently and the burner stayed on
until the house went up in smoke.

You really need somebody local, a friend, relative, neighbor to take a
peek at it. And you really need to have faith in the person you
have fix it. Don't trifle with stuff you don't understand that runs
while you're not home and can burn the place down.

Does it over heat the house? Or just blow althe time?

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

"MeredithCaudill" wrote in message
...

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!




--
MeredithCaudill

MeredithCaudill wrote:

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!




Hi,
I am retired ex-Honeyweller, never knew there was Honeywell brand
furnace. Must be very OLD unit with LOW efficiency. Three things
to check; malfunctioning thermostat, Stuck fan relay, High limit
switch(relay), not necessarily in that order.
Good luck fixing it.

On Dec 26, 4:04*pm, mike wrote:
On 12/26/2012 12:15 PM, EXT wrote:







"MeredithCaudill" wrote in
. ..

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/art...68/216.pdfthat the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!

Is it the furnace or just the blower that won't shut down?

If it is the furnace, either the problem is with the thermostat or a
relay in the furnace controls is stuck on.

If it is the blower, either your thermostat has a blower switch that has
been turned on or a switch inside the furnace has been changed to ON. Or
possibly the fan limit switch inside the furnace controls is stuck in
the on position.

That's an old system and you have no idea if it was installed the way
shown in the manual.
I'd suspect that the fan runs as long as the firebox temperature
is above some number. *Suspect that thermal switch.

Agree. On older furnaces like that there is typically a
temp switch on the plenum. When the temp goes over
a certain upper point, the blower turns on. When it goes
below a lower limit, the blower turns off. That switch
would be a prime suspect.



And there may be
another switch that shorts across that which may be in the wrong position
or the wiring is shorted.

Could also be the thermostat in the house has been
set to "fan on". Or a bad thermostat, or short in the
wiring.



Really, it does no harm for the blower to be on all the

time.

Depends on your definition of harm. *Just doing the math, leaving my
furnace blower on 24/7 would cost me $36/month in electricity.
I call that HARM with a capital H.

I think the suggestion was made in the sense that it's
not an immediate crisis that's going to ruin the blower
or furnace.




I have kept my furnace fan running 24/7 for the past several years

to improve the air circulation and prevent the air from stratifying.

The bottom line here is, even if you knew what was wrong, would you
have the skills and the tools and the motivation to fix it yourself.
And what would you do if you messed it up and the furnace quit working
entirely? *Or you messed it up differently and the burner stayed on
until the house went up in smoke.

You really need somebody local, a friend, relative, neighbor to take a
peek at it. *And you really need to have faith in the person you
have fix it. *Don't trifle with stuff you don't understand that runs
while you're not home and can burn the place down.- Hide quoted text -


Yes, I agree. You need to know your skills are appropriate
for the job.

On 12/26/12 5:21 PM, Tony Hwang wrote:


MeredithCaudill wrote:

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off
unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's
that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!




Hi,
I am retired ex-Honeyweller, never knew there was Honeywell brand
furnace. Must be very OLD unit with LOW efficiency. Three things
to check; malfunctioning thermostat, Stuck fan relay, High limit
switch(relay), not necessarily in that order.
Good luck fixing it.

FWIW, the original "print date" code on the manual's title page shows
March of 1949 !!!

..

FWIW, the original "print date" code on the manual's title page shows
March of 1949 !!!

a brand new furnace will pay for itself quickly.....

goodman furnaces cost far less than the major brands like lennox trane
etc.

a few years ago my new forced air furnace with air cost 3500 bucks
installed.

just a furnace around 1500 bucks

On 12/26/2012 2:38 PM, wrote:


Yes, I agree. You need to know your skills are appropriate
for the job.

I thought more about that.
I consider myself a smart feller and have high confidence in my
ability to do anything I set my mind to.
But looking back over the last 65 years at all the bonehead
actions and decisions I made with all that confidence...
I'm amazed I'm still alive.

I just flashed on the image of me lying under my '55 ford with the
transmission sitting on my chest and oil pouring in my
face wondering, "what do I do now?"
Good times...

Your skills have to actually BE appropriate for the job.

On Wed, 26 Dec 2012 14:50:38 +0000, MeredithCaudill
wrote:


I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!
Running the blower 24/7 won't hurt it. Will cost a bit in
electricity use, but that's all. Does your thermostat have a fan
switch on it by chance????

On Dec 26, 5:52*pm, bob haller wrote:
.



FWIW, the original "print date" code on the manual's title page shows
March of 1949 !!!

a brand new furnace will pay for itself quickly.....

goodman furnaces cost far less than the major brands like lennox trane
etc.

a few years ago my new forced air furnace with air cost 3500 bucks
installed.

just a furnace around 1500 bucks

Man, I don't know where you live that you get those kinds
of prices. Those prices, $1500 for a furnace, $3500 for
furnace plus AC, are more like the cost of the eqpt in my world.
With install, typically 2X that.

On Dec 27, 10:41*am, "
wrote:
On Dec 26, 5:52*pm, bob haller wrote:





.

FWIW, the original "print date" code on the manual's title page shows
March of 1949 !!!

a brand new furnace will pay for itself quickly.....

goodman furnaces cost far less than the major brands like lennox trane
etc.

a few years ago my new forced air furnace with air cost 3500 bucks
installed.

just a furnace around 1500 bucks

Man, I don't know where you live that you get those kinds
of prices. *Those prices, $1500 for a furnace, $3500 for
furnace plus AC, are more like the cost of the eqpt in my world.
With install, typically 2X that.

THINK GOODMAN., the big companies selling trane etc charge twice the
3500 bucks

On Dec 27, 6:06*pm, bob haller wrote:
On Dec 27, 10:41*am, "
wrote:





On Dec 26, 5:52*pm, bob haller wrote:

.

FWIW, the original "print date" code on the manual's title page shows
March of 1949 !!!

a brand new furnace will pay for itself quickly.....

goodman furnaces cost far less than the major brands like lennox trane
etc.

a few years ago my new forced air furnace with air cost 3500 bucks
installed.

just a furnace around 1500 bucks

Man, I don't know where you live that you get those kinds
of prices. *Those prices, $1500 for a furnace, $3500 for
furnace plus AC, are more like the cost of the eqpt in my world.
With install, typically 2X that.

THINK GOODMAN., the big companies selling trane etc charge twice the
3500 bucks- Hide quoted text -

- Show quoted text -

I put in a Rheem 2 years ago, which isn't top of the line.
I guess it's maybe one step above Goodman. $1500 for the furnace,
$3500 for furnace plus AC were about the cost of the eqpt. And
that is just the furnace, outside AC, and cased coil. Typically
changing an ancient furnace like the OP has, you're
going to be going to a condensing furnace, no? Especially
if the goal is to get good efficiency. That means you now
have PVC pipe/fittings to buy, maybe condensate pump.
Then you have all the labor involved, paying for permits, etc.
Getting rid of the old furnace.
And you have other possible issues, like an orphaned hot
water heater on a chimney that is now too large, so you
may need a chimnely liner.
I don't see how you get a furnace and AC installed for $3500 no
matter whose eqpt you use, unless it fell off the back of
a truck.

Did we ever hear back from the OP?

Are we talking about blower on, or heat on all the time?

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

"MeredithCaudill" wrote in message
...

I have an old Honeywell gas burner furnace
http://www.heatinghelp.com/files/articles/768/216.pdf that the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!




--
MeredithCaudill

On Thu, 27 Dec 2012 15:06:32 -0800 (PST), bob haller
wrote:

On Dec 27, 10:41*am, "
wrote:
On Dec 26, 5:52*pm, bob haller wrote:





.

FWIW, the original "print date" code on the manual's title page shows
March of 1949 !!!

a brand new furnace will pay for itself quickly.....

goodman furnaces cost far less than the major brands like lennox trane
etc.

a few years ago my new forced air furnace with air cost 3500 bucks
installed.

just a furnace around 1500 bucks

Man, I don't know where you live that you get those kinds
of prices. *Those prices, $1500 for a furnace, $3500 for
furnace plus AC, are more like the cost of the eqpt in my world.
With install, typically 2X that.

THINK GOODMAN., the big companies selling trane etc charge twice the
3500 bucks
$1500 for a furnace and $3500 for furnace plus AC somebody is
working for nothing, and will NOT be there for you when you need them
for service down the line.

On Dec 27, 9:04*pm, "Stormin Mormon"
wrote:
Did we ever hear back from the OP?

No, they got blown away.





Are we talking about blower on, or heat on all the time?

Christopher A. Young
Learn more about Jesus
*www.lds.org
.

"MeredithCaudill" wrote in message

...

I have an old Honeywell gas burner furnacehttp://www.heatinghelp.com/files/articles/768/216.pdfthat the blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!

--
MeredithCaudill

Was animated thread, for awhile. Someone
did a good job, throwing that meat to the
wolves.

Ah, well, it was fun.

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

wrote in message
...
On Dec 27, 9:04 pm, "Stormin Mormon"
wrote:
Did we ever hear back from the OP?

No, they got blown away.





Are we talking about blower on, or heat on all the time?

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

"MeredithCaudill" wrote in message

...

I have an old Honeywell gas burner
furnacehttp://www.heatinghelp.com/files/articles/768/216.pdfthat the
blower
won't shut off on. The furnace heats great, just won't shut off unless I
shut the whole furnace down. Not a good thing when it's below 30
degrees, but have a gas fireplace been using to give the blower a break
from time to time. This furnace has old mercury switches in it it's that
old, and I'm desperate to not have to replace my furnace just yet.
Please help!

--
MeredithCaudill