I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!

wrote in message
...
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!

Very carefully read the manual. The answer is in there. If not, call the
manufacturer.

I have a digital thermostat and hate the damned thing, by the way. I had to
read the manual and that is why I hate it.

On Jan 29, 5:13�pm, wrote:
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. �Help!

is the new thermostat located in the same place as the old one?

put the thermostat oin a outside or cold wall can cause that

My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone



wrote in message
...
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!

On Jan 29, 5:25*pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone

Raising the house temp from the set 68 all the way to 74? Never
seen a furnace capable of doing that.

I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual. It's possible
there is a heat anticpator type setting that is whacked out. Did you
by chance adjust any setting when hooking it up?








wrote in message

...



I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. *Help!- Hide quoted text -

- Show quoted text -

When I replaced my thermostat, I left a screw loose on a jumper, and because
of that the furnace would not turn on. Took a couple of hours to figure out
why the thing was dead. It was a factory installed jumper, and so I never
bothered to check the screw. I had to take the panel off of the furnace and
check it there, and when I did I found that the signal from the thermostat
was not making it. Yet the screw on the thermostat was hot. Moral of the
story - check all screws, even on factory installed jumpers.


wrote in message
...
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!

wrote:
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!
I have seen new digital thermostats just
plain work bad. I have one in
my motorhome. It might just be one of
these bad designs. BTW, before
the Honeywell, at home, I bought a unit
that behaved just as you describe.
I called the company. They told me to
set the 'differential' to a lower
setting. It was already at the lowest
setting. The unit was just junk. I
returned it. The Honeywell I now have
works very well.

wrote:
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!

Digital thermostats don't work, won't work, and can't be made to work.

Get a manual one, preferably the kind with the little blob of Mercury.

Digital thermostats don't work, won't work, and can't be made to work.

Get a manual one, preferably the kind with the little blob of Mercury.

I've used digital thermostats for years and years. Other then the loose
screw on one, they all worked great.

Zootal wrote:
Digital thermostats don't work, won't work, and can't be made to work.

Get a manual one, preferably the kind with the little blob of Mercury.


I've used digital thermostats for years and years. Other then the loose
screw on one, they all worked great.


Hmmm,
I don't get it. Analog or digital, their functionality is same.
Why won't it work? May need to tell the 'stat it is oil burner.
Look in the system option settings per manual.

wrote:
On Jan 29, 5:25 pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone

I agree that sounds reasonable. The OP could check if the burner is off
when the temp is over 68.

Raising the house temp from the set 68 all the way to 74? Never
seen a furnace capable of doing that.
..
Sure seems like a lot.

I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual.

Maybe the digital thermostat runs on Microsoft Windows.

It's possible
there is a heat anticpator type setting that is whacked out. Did you
by chance adjust any setting when hooking it up?


I agree that if there is an adjustable anticipator that has not been
set, that could be the problem. The anticipator is to avoid overshoot.



wrote in message
...

I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!-

*at times* the furnace will not turn off?
Any pattern?
If it is a setback thermostat and the temperature is returning to
"normal" the temperature may overshoot. 6 degrees seems excessive.

--
bud--

On Jan 30, 3:14*am, bud-- wrote:
wrote:
On Jan 29, 5:25 pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone

I agree that sounds reasonable. The OP could check if the burner is off
when the temp is over 68.

Raising the house temp from the set 68 all the way to 74? * *Never
seen a furnace capable of doing that.

.
Sure seems like a lot.



I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual. *

Maybe the digital thermostat runs on Microsoft Windows.

It's possible
there is a heat anticpator type setting that is whacked out. *Did you
by chance adjust any setting when hooking it up?

I agree that if there is an adjustable anticipator that has not been
set, that could be the problem. The anticipator is to avoid overshoot.



There isn't a digital thermostat made where out of the box it will go
to 74 when the set temp is 68 because the anticipator was NOT set.
Now, there may be one where if you screw around with it and set it
wrong, it will.






wrote in message
....

I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. *Help!-

*at times* the furnace will not turn off?
Any pattern?
If it is a setback thermostat and the temperature is returning to
"normal" the temperature may overshoot. 6 degrees seems excessive.

--
bud--

On Jan 30, 8:00*am, wrote:
On Jan 30, 3:14*am, bud-- wrote:





wrote:
On Jan 29, 5:25 pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone

I agree that sounds reasonable. The OP could check if the burner is off
when the temp is over 68.

Raising the house temp from the set 68 all the way to 74? * *Never
seen a furnace capable of doing that.

.
Sure seems like a lot.

I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual. *

Maybe the digital thermostat runs on Microsoft Windows.

It's possible
there is a heat anticpator type setting that is whacked out. *Did you
by chance adjust any setting when hooking it up?

I agree that if there is an adjustable anticipator that has not been
set, that could be the problem. The anticipator is to avoid overshoot.

There isn't a digital thermostat made where out of the box it will go
to 74 when the set temp is 68 because the anticipator was NOT set.
Now, there may be one where if you screw around with it and set it
wrong, it will.





wrote in message
....

I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. *Help!-

*at times* the furnace will not turn off?
Any pattern?
If it is a setback thermostat and the temperature is returning to
"normal" the temperature may overshoot. 6 degrees seems excessive.

--
bud--- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

I have forced hot water and the thermostat was put on the wall right
out of the box. I didn't adjust anything. Could it be a problem oh
having the wires connected to the wrong ports?

On Jan 30, 9:03*am, wrote:
On Jan 30, 8:00*am, wrote:





On Jan 30, 3:14*am, bud-- wrote:

wrote:
On Jan 29, 5:25 pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone

I agree that sounds reasonable. The OP could check if the burner is off
when the temp is over 68.

Raising the house temp from the set 68 all the way to 74? * *Never
seen a furnace capable of doing that.

.
Sure seems like a lot.

I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual. *

Maybe the digital thermostat runs on Microsoft Windows.

It's possible
there is a heat anticpator type setting that is whacked out. *Did you
by chance adjust any setting when hooking it up?

I agree that if there is an adjustable anticipator that has not been
set, that could be the problem. The anticipator is to avoid overshoot.

There isn't a digital thermostat made where out of the box it will go
to 74 when the set temp is 68 because the anticipator was NOT set.
Now, there may be one where if you screw around with it and set it
wrong, it will.

wrote in message
...

I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. *Help!-

*at times* the furnace will not turn off?
Any pattern?
If it is a setback thermostat and the temperature is returning to
"normal" the temperature may overshoot. 6 degrees seems excessive.

--
bud--- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

I have forced hot water and the thermostat was put on the wall right
out of the box. I didn't adjust anything. Could it be a problem oh
having the wires connected to the wrong ports?- Hide quoted text -

- Show quoted text -

It would seem unlikely. The thermostat is clearly able to turn the
heat on and off. It seems odd that wiring could account for it going
to 74 when set to 68. Did you try taking the batteries out and/or
following the full reset procedure in the manual as I suggested?
After that, I'd call the help line # and/or take it back.

On Jan 30, 9:16*am, wrote:
On Jan 30, 9:03*am, wrote:





On Jan 30, 8:00*am, wrote:

On Jan 30, 3:14*am, bud-- wrote:

wrote:
On Jan 29, 5:25 pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the desired
temperature, but the blower runs independently of the thermostat and will
continue to blow until the hot air is gone

I agree that sounds reasonable. The OP could check if the burner is off
when the temp is over 68.

Raising the house temp from the set 68 all the way to 74? * *Never
seen a furnace capable of doing that.

.
Sure seems like a lot.

I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual. *

Maybe the digital thermostat runs on Microsoft Windows.

It's possible
there is a heat anticpator type setting that is whacked out. *Did you
by chance adjust any setting when hooking it up?

I agree that if there is an adjustable anticipator that has not been
set, that could be the problem. The anticipator is to avoid overshoot.

At this stage it would be really helpful for you to accurately and
adequately describe your system. First you said you had a furnace, which
turns out to be a boiler, then you said you replaced the thermostat and it
turns out there are at least two thermostats. Is it a hot water baseboard
system? Are there any blowers involved ? Is domestic hot water produced by
the same boiler and if so, by domestic coil, or indirect tank. Are there
zone valves or circulators or both and how many ? Once we have the
information about your system, we may be able to help diagnose problems with
it.




wrote in message
...
On Jan 30, 9:16 am, wrote:
On Jan 30, 9:03 am, wrote:





On Jan 30, 8:00 am, wrote:

On Jan 30, 3:14 am, bud-- wrote:

wrote:
On Jan 29, 5:25 pm, "RBM" wrote:
My guess is that the thermostat is turning the burner off at the
desired
temperature, but the blower runs independently of the thermostat
and will
continue to blow until the hot air is gone

I agree that sounds reasonable. The OP could check if the burner is
off
when the temp is over 68.

Raising the house temp from the set 68 all the way to 74? Never
seen a furnace capable of doing that.

.
Sure seems like a lot.

I'd re-read the installation instructions and re-check the wiring,
though I can't see how incorrect wiring would result in that
behavior
either.

Also, remove the batteries and let it sit for awhile or follow
whatever total reset procedure there is in the manual.

Maybe the digital thermostat runs on Microsoft Windows.

It's possible
there is a heat anticpator type setting that is whacked out. Did
you
by chance adjust any setting when hooking it up?

I agree that if there is an adjustable anticipator that has not been
set, that could be the problem. The anticipator is to avoid
overshoot.

There isn't a digital thermostat made where out of the box it will go
to 74 when the set temp is 68 because the anticipator was NOT set.
Now, there may be one where if you screw around with it and set it
wrong, it will.

wrote in message
...

I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is
that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run
until
it is 74. I thought that maybe air from inside the walls was
causing
the thermostat to read a different temp so i caulked the holes
but am
still having the problem. Help!-

*at times* the furnace will not turn off?
Any pattern?
If it is a setback thermostat and the temperature is returning to
"normal" the temperature may overshoot. 6 degrees seems excessive.

--
bud--- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

I have forced hot water and the thermostat was put on the wall right
out of the box. I didn't adjust anything. Could it be a problem oh
having the wires connected to the wrong ports?- Hide quoted text -

- Show quoted text -

It would seem unlikely. The thermostat is clearly able to turn the
heat on and off. It seems odd that wiring could account for it going
to 74 when set to 68. Did you try taking the batteries out and/or
following the full reset procedure in the manual as I suggested?
After that, I'd call the help line # and/or take it back.- Hide quoted
text -

- Show quoted text -

i will check that out and let you know

On Tue, 29 Jan 2008 14:13:43 -0800 (PST),
wrote:

I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!
Call a pro to fix it!

--
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/

On Tue, 29 Jan 2008 19:30:50 -0600, "HeyBub" wrote:

wrote:
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!

Digital thermostats don't work, won't work, and can't be made to work.

Get a manual one, preferably the kind with the little blob of Mercury.


No shop stocks the mercury stuff anymore. Environmentally toxic.
Gwad. I hate the electronic stuff. And I used to fix electronics for
a living. I can never remember the instructions and they are not
intuitive to use or to figure out how to set. All I want is an ON OFF
switch with a "just about here is right" kind of set point for a
thermostat switch. Same thing with the microwave oven. All I need is
a mechanical dial power setting and a clockwork timer. Nothing to
read and no multiple finger stabs at the membrane switch.

On Jan 31, 6:00*am, PaPaPeng wrote:
On Tue, 29 Jan 2008 19:30:50 -0600, "HeyBub" wrote:
wrote:
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. *Help!

Digital thermostats don't work, won't work, and can't be made to work.

Get a manual one, preferably the kind with the little blob of Mercury.

No shop stocks the mercury stuff anymore. *Environmentally toxic.
Gwad. *I hate the electronic stuff. And I used to fix electronics for
a living. *I can never remember the instructions and they are not
intuitive to use or to figure out how to set. *All I want is an ON OFF
switch with a "just about here is right" kind of set point for a
thermostat switch.

Every digital one I've ever seen will do that if you just push the
HOLD buttom and then set the temp.


*Same thing with the microwave oven. *All I need is
a mechanical dial power setting and a clockwork timer. *Nothing to
read and no multiple finger stabs at the membrane switch.

The least reliable timers/clocks I've seen have all been the old
mechanical ones on stoves. And they were difficult to set as well.
Granted, some microwaves are overly complicated, but there are plenty
that have very easy to use controls.

After reading all the replies and
additional data, I am going to guess that
the overshoot might be caused by
residual heat in the radiators. Many
digital thermostats have a setting for
hot water heat. Check the manual,
as others have said. If the overshoot
is more on 50 degree days than say
on 10 degree days, that's a clue.

wrote:
I have a oil furnace and have recently replaced the older dial
thermostat with a digital thermostat. The problem I am having is that
at times the furnace will not turn off when the desired temp is
rached, ie, the thermostat is set at 68 but the furnace will run until
it is 74. I thought that maybe air from inside the walls was causing
the thermostat to read a different temp so i caulked the holes but am
still having the problem. Help!