Carrier Infinity Control thermostat problem
googlem...@yahoo.com
high efficiency gas furnace (96%) and central air condenser (18 SEER).
The thermostat is an Infinity Control model which is supposed to
eliminate the hot/cold syndrome of forced hot air heat.
Well, it sure as hell hasn't done that. This unit doesn't recognize a
change in the room temperature until it's changed by at least three
degrees. That means it gets very cold before the furnace kicks on. It
stays on for a long time - sometimes twenty minutes or more, then goes
off for as long as an hour. It's four degrees outside right now and
the furnace came on once in the past hour. When it does go on and off
it "thinks" that the inside temp has changed by one degree when in fact
the swing is about five degrees.
The guy who installed it agrees there is a big problem but he is having
trouble convincing Carrier.
Does anyone else have a similar problem with this new model? It's very
frustrating considering the little sucker cost about $400.
Thanks
Jane
m Ransley
old stat, maybe its a poor location or cold wall or bad stat, or getting
drafts. Im no pro but am sure it has a settings for temp Swing or
Anticipator if it is anything other then your basic cheap stat, it is
listed under swing or anticipator settings in your stat manual. Narrow
its on off range. Is it a carrier stat. You say 96%, curious what size
unit because the only 96% Infinity unit is 38000 input btu from what I
saw all other infinitys are around 94.5%, more marketing deception. Is
your unit with the VS DC motor designed to be left on 24x7.
jdk
off. i called out favret co. here in cols ohio and the guy adjusted it
to be right on. i use a photography therm. and it is accurate. so if
they installed it they can adjust it. if not replace it period. the co.
here where i live is great. also the motor saves elec.
Dr. Hardcrab
<googlem...@yahoo.com> wrote in message
news:1134654754.2...@g47g2000cwa.googlegroups.com...
You need to call the installer back out and have him calibrate the
thermostat. Sounds like they forgot something in the set up program...
CBHVAC
"Dr. Hardcrab" <drhar...@hotmail.SPAMcom> wrote in message
news:Zwgof.17178$Jz6.6194@trnddc06...
Or..it could just be that someone else if finding out why some of us hate
Totaline...
LOL
Dr. Hardcrab
"CBHVAC" <inac...@yahoo.com> wrote in message
news:GVhof.1070$Dh6....@eagle.america.net...
Watchit.......
;-].
RP
googlem...@yahoo.com wrote:
Yes it has a problem. If all is set up and operating correctly your room
temp (measured at the user interface or remote sensor, will remain
fairly constant.) Does this happen to be a zoned system?
hvacrmedic
googlem...@yahoo.com
mean about size. I know next to nothing about furnaces. The quote
says "Carrier 58 MVP 96%". Also don't know what a "VS DC" is. It
does have a variable speed fan that can be left on all the time at low,
medium or high and an auto setting.
My installer is going to have someone from Carrier come. He's
convinced there's a bug in the thermostat. All I know is we are
miserable.
googlem...@yahoo.com
googlem...@yahoo.com
he thought we were just some crazy complainers and that it would be
fine. Within a short time he realized he was wrong. He had some fancy
infra-red thermometers to read the temps in different areas. He saw
that the temp would vary by as much as five or six degrees between heat
cycles. It may be that he doesn't know how to calibrate it properly.
He is having someone from Carrier come. Hopefully they will know more
than he does.
RP
googlem...@yahoo.com wrote:
> No it is only one zone.
In that case the first order of business is to recheck
connections--color coding (G,Y,W,R), tightness, etc. It's characteristic
of the terminal strip in this furnace to have screws that are difficult
to turn. This can lead to a tech or installer believing that the
connection is tight when it isn't. I have encountered this problem more
than once. It's a pin connector as well and may not be seated onto the
pins all the way. Have them check the screw connections by pulling on
the wires *individually*. Beyond that it could be a system fault, which
should be easy to diagnose since the t-stat data-logs all faults, even
runtime history, for easy retrieval. It could simply have the db set to
high in the setup menu.
hvacrmedic
jdk
sorry you are having problems, but once they fix it you will be happy.
i know the fan motor is expensive to replace, but does save on elec.
i leave the fan on low year around. very happy with the system.
Dr. Hardcrab
<googlem...@yahoo.com> wrote in message
news:1134684253.2...@g43g2000cwa.googlegroups.com...
Give us an update once they correct the problem.
Once you get it working properly, you will like it....
googlem...@yahoo.com
The problem is the room temp on the thermostat is wrong by about three
degrees. The temp in the room has to go down or up two or three
degrees before the thermostat sees any change in the temp and reacts.
Would the "db" have an affect on the thermostats temp sensor?
By the way - the installer came and put in a new thermostat and it did
the same thing. He also said he had two other customers with the same
problem. He thinks it's a problem with the thermostat. I think it's a
problem with the setup.
What do you think?
m Ransley
swing, set it to the minimum Swing or Anticipator setting for now till
you figure it out. It is in your thermostat manual . Or your " pro"
should know the answer on the phone.
VS DC is variable speed direct current, you have it. Learn about it.
96% efficient no, I bet yours is only 94-94.5% efficient, just BS
marketing as I expalined
RP
googlem...@yahoo.com wrote:
> What is the "db"?
Deadband, the temp swing, if you will, between off and on.
>
> The problem is the room temp on the thermostat is wrong by about three
> degrees. The temp in the room has to go down or up two or three
> degrees before the thermostat sees any change in the temp and reacts.
>
> Would the "db" have an affect on the thermostats temp sensor?
It might appear to, but no. If db is set too high it will cause
variations from the set point by up to the amount of db set.
>
> By the way - the installer came and put in a new thermostat and it did
> the same thing.
That should be a valuable clue.
> He also said he had two other customers with the same
> problem. He thinks it's a problem with the thermostat. I think it's a
> problem with the setup.
Unfortunately I can't see it from here.
>
> What do you think?
I can't diagnose it from here based upon the minimal info that you've
given, sorry. Contact Carrier yourself if you have to. The fact that he
has other customers with the same problem indicates that he's either
installing and/or setting up the systems incorrectly. The only settings
on the controller that would cause this would be the db, already covered.
If the temperature offset adjustment (a different setting mentioned
elsewhere in the thread) were off by a few degrees this wouldn't result
in the setpoint reading on the stat being off from the actual room temp
reading on the stat.
It really sounds as though your unit is simply malfunctioning, e.g.
misfiring, locking out, etc, and simply not getting the area around the
stat up to the setpoint temp. This could be caused by several different
installation errors involving combustion piping or indoor airflow
issues. The blower speed setting may also be set incorrectly. There
could be a restriction in the ductwork. The vent pipes may be too small
in diameter or not sloped properly. The list really does go on and on.
Best bet is to get another company out, or else get the current company
to go through the installation guide page by page checking the
instructions there against the actual install. If the manual is over
their head then that could also account for several install issues, and
unfortunately this isn't unusual in the real world.
hvacrmedic
googlem...@yahoo.com
"deadband heat/cool" setting only controls the minimum change of temp
when the unit changes from heat to cooling. There is no other deadband
setting that I could find. I don't know if you have time to take a
look but here is the installation guide:
http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/uid01-1si.pdf
We have noticed some improvement by setting the fan speed to low, but
the actual room temp stills varies by two or three degrees without the
change being recognized by the thermostat. Very frustrating.
Thanks for trying to help. I really appreciate it.
Jane
m Ransley
RP
googlem...@yahoo.com wrote:
Well the deadband and differential are sometimes reversed in their
definitions depending upon whoever wrote the manual. My last Carrier
stat install had deadband as the on/off swing and differential as the
difference between heat and cool settings. But this is all beside the
point. The on/off swing setting, regardless of what this is called on
your stat, is the only t-stat setting that could cause what you are
seeing,as settings go. A fault with the t-stat is a highly remote
possibility, but you may have gotten that one of those 1 out of umteen
faulty ones. But like I said, this is going to be impossible to diagnose
over the intenet because there are too many parameters on your
particular unit that require manual testing and/or checking. Good luck
resolving this, and remember that you are free to contact Carrier
yourself, they won't mind, and will even be happy to take your calls and
or e-mails.
hvacrmedic
googlem...@yahoo.com
the thermostat. I kept track of when the temps changed and noticed it
happened AFTER the furnace came on and shut off. That made me realize
that the cold and warm air was getting to the thermostat from somplace
other that the area around it. I looked around and found two heat
registers that were closed in the dining room, which meant that area
was colder than the living room. We almost never use the dining room
but it's closer to the thermostat than the living room is. It was
screwing up the heat. When I opened them up fully things improved
dramatically.
We are thinking about getting a remote room sensor so that the
thermostat can react to the temp in the living room and not in the
dining room. Do you know if the remote sensor can be easily
deactivated so the furnace and/or air conditioner responds to the
thermostat sensor if we want it to?
Anyway, things are much better. Thanks all for your help.
Dr. Hardcrab
<googlem...@yahoo.com> wrote in message
news:1135387038.1...@z14g2000cwz.googlegroups.com...
Not sure if anyone brought it up or not, but:
What is the wall like where the thermostat (interface) is mounted? If the
installer left a good size hole (behind the thermostat) and you have a
"draft" coming through it, that can really have an affect (or is that
Effect?) on the operation.
Just a thought...
googlem...@yahoo.com
didn't see them actual do the install but the old one was much small
than the new one so I assume the hole is not big. I don't think they
would have needed to make the hole any larger? I certainly don't see
any space around it or feel any draft. Also it's an inside wall.
Good thought though.
Dr. Hardcrab
<googlem...@yahoo.com> wrote in message
news:1135429779.0...@o13g2000cwo.googlegroups.com...
Inside walls will get drafts too, but enough of that....;-]
You know how they sell "gaskets" to put behind faceplates for switches and
outlets in your house? That's kind of the same idea. Even a "figer-size"
hole can let enough of a draft in to mess with the thermostat. The only
thing is, if it didn't affect the old one, I don't see how it could now.
m Ransley
might have had hole sealed with caulk, you wont feel anything. Remove it
and the plate and caulk the hole. Be sure mains furnace power is off and
thermostat set to off first. Id say installer just missed this, but
since you say he has many issues with other customers hes a hack.
probably new in the trade. But im no pro either, just guessing.
Jheengr
temp, and the backlight won't turn off. Contacted Carrier and asked to
replace but they won't, and dealer wants to charge $99 labor to unplug old
and plug new.
--
Tony Hwang
properly? I have same system but I don't use Carrier thermostat, I
installed Honeywell wireless one and set it up myself.
Uncle Monster
> We just had a complete new Carrier system installed. Top of the line
> high efficiency gas furnace (96%) and central air condenser (18 SEER).
> The thermostat is an Infinity Control model which is supposed to
> eliminate the hot/cold syndrome of forced hot air heat.
>
> Well, it sure as hell hasn't done that. This unit doesn't recognize a
> change in the room temperature until it's changed by at least three
> degrees. That means it gets very cold before the furnace kicks on. It
> stays on for a long time - sometimes twenty minutes or more, then goes
> off for as long as an hour. It's four degrees outside right now and
> the furnace came on once in the past hour. When it does go on and off
> it "thinks" that the inside temp has changed by one degree when in fact
> the swing is about five degrees.
>
> The guy who installed it agrees there is a big problem but he is having
> trouble convincing Carrier.
>
> Does anyone else have a similar problem with this new model? It's very
> frustrating considering the little sucker cost about $400.
>
> Thanks
>
> Jane
[8~{} Uncle HVAC Monster
Uncle Monster
[8~{} Uncle Temp Monster
Uncle Monster
[8~{} Uncle Cold Monster
Uncle Monster
[8~{} Uncle Senile Monster
Stormin Mormon
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