Carrier Infinity T-stat Question-Filter Used %

goddiOctober 5, 2008

Greetings,

I just had a Carrier Infinity system installed with the Infinity T-stat. I am trying to learn/understand its functions.

When I try the Check System Status, it shows "Filter 80% Used". It has only be a couple days of use. What is this telling me??? I reset it back to 0% today so I will see what happens later. But what is this suppose to tell me and why would it say 80% with a brand new filter??? I happened to come across this 80% figure when the installers were here but, then, I could not relocate where I had come across it, so he went in and reset something...apparently not the Check System Status setting.

Thanks... Gary

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ryanhughes

Can you see what the static pressure of the system is from the control? I'm not very familiar with Carrier's Infinity system (pros on hvac-talk.com are, if you care to register there and ask--I vaguely recall a similar question to yours), but I wonder if it has something to do with the TESP (total external static pressure) of the system.

    Bookmark   October 6, 2008 at 10:14PM
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goddi

ryanhughes...
Yesterday, I reset the "Filter 80% Used" back to 0% and, as of this morning, it has stayed on 0%.
Here are the readings with the heat pump (on heating):

Fan-Low
Airflow CFM=923
Blower RPM=517
Static Pressure=.16

Fan-High
Airflow CFM=1528
Blower RPM=829
Static Pressure=.38

Maybe the 80% was there during installation and needed to be reset to 0%???
Gary

    Bookmark   October 7, 2008 at 10:02AM
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ryanhughes

Static readings are fine. Must have been a glitch or something. Check the progress over the next month or so. I assume this is a media filter.

    Bookmark   October 7, 2008 at 6:29PM
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goddi

Thanks... I'll report back if I come up with anything.
Gary

    Bookmark   October 7, 2008 at 8:58PM
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goddi

Greetings,
I called Carrier today to see if they could explain some settings on the Infinity Controller, but they don't have any technical support people!! They said to call my installers. So I did and they have the "Presidents Award" seal. So you would think they could answer my questions.

I asked them what is the difference between the "Filter Used 80%" figure (which I reset to 0% a couple days ago) and the "Filter 3% Used" I find under Advanced/System Maintenance.

He thinks the "Filter 3% Used" relates to 3% of the 6-month reminder period. But has no idea why the system would have show "80%" or how it relates to the "3%" figure of what the "80%" is telling me.

I was also told somewhere that the controller will detect when the static pressure at the media filter gets too high and notify me so I can change the filter. But he did not know much about this. Any ideas about this function??? I'd like to have the 6-month notification AND an indication of the static pressure at the filter. Is this possible???

The installer said he will get back to me. But I wonder if anyone out there can explain these issues to me.
Thanks... Gary

    Bookmark   October 9, 2008 at 11:43AM
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