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  1. Contact with owners of the same system

    Thank you for your suggestion. I will try creating a new thread and summarize all that's been done trying to solve this problem over the past two years but it still won't solve the problem I was...
  2. A question and suggestion for the moderators:

    First let me remind you I started this thread (since I've had posts deleted in the past even in threads I started).

    This is an OLD thread I started "before" buying two Carrier Infinity Greenspeed...
  3. There isn't any visibly noticeable change when...

    There isn't any visibly noticeable change when the damper actuators have been damaged by the system. They just stop opening when the system applies 24 volts and when they are replaced the dampers...
  4. Unfortunately no. Carrier for nearly two years...

    Unfortunately no. Carrier for nearly two years has insisted it is caused by high static pressure and they have demanded duct size increases but every increase has made the problem worse.

    What I...
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    I appreciate your input but I would apprecaite...

    I appreciate your input but I would apprecaite even more an explanation.

    How can you conclude the duct system is too small if it only develps a total static pressure (measured from supply to...
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    Brent, Tahnks for those thoughts but this...

    Brent,

    Tahnks for those thoughts but this problem has been happenning since these systems were installed in the summer two years ago. The problems in cooling are the same - dampers aren't open...
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    I meant we've been through 4 sets of damper...

    I meant we've been through 4 sets of damper "actuators".. Thay are Carrier actuators. But most actual dampers have been replaced to at one time or another.
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    Brent, Thanks. It's a 5 ton condenser with a...

    Brent,

    Thanks. It's a 5 ton condenser with a 5 ton air handler. Upstairs we have a 3 ton condenser with the same 5 ton AHU so are you saying that could be a problem on the 3 ton system? My 3...
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    I do appreciate the comments and wanted to let...

    I do appreciate the comments and wanted to let everyone know the wiring was replaced and the problem persists.

    I now know it is NOT a firmware problem either. I watched a zone open and...
  10. We are still trying to determine what is causing...

    We are still trying to determine what is causing the dampers to fail to open or re-close and my contractor (who is great) has done everything humanly possible including:

    Everything in the system...
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    Update on Infinity Greenspeed dampers failing problem

    We are still trying to determine what is causing the dampers to fail to open or re-close and my contractor (who is great) has done everything humanly possible including:

    Everything in the system...
  12. Has anyone seen Carrier Infinity dampers close immediately after opening?

    I've had a problem with my 5 ton Infinity Greenspeed system that we "thought" was due to dampers failing to open becaue of high static pressure but I recently observed one opening and then...
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    Just a quick update: The only cables that were...

    Just a quick update: The only cables that were not alrready shielded have been replaced with shielded cables and it did not cure the problem.

    In addition the 5 ton system experienced a problem...
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    Thank you very much for your response and I...

    Thank you very much for your response and I definitely agree the cabling from control board to dampers should be a suspected source of this problem.

    I did ask them to check the cabling and I have...
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    Thanks for the responses. I "assume" they are...

    Thanks for the responses.

    I "assume" they are Carrier (or Bryant) dampers.

    Bur Carrier tells me the zone damper positioning commands sent via their protocol from the controller to the zone...
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    Carrier Infinity Greenspeed Zoining Problem

    If anyone can advise on this complex problem I would greatly appreciate your input.

    We had two 25VNA systems installed about 8 months ago. A 5 ton with 5 zones and a 3 ton with 4 zones.

    We have...
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    Carrier Greenspeed problem update

    Update on my Infinity Greenspeed system problems:

    We discovered zone dampers are failing to open many times per day. Sometimes the system will show Zone 1 and 2 at position 15 (wide open) and...
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    Thanks Bob. I had hoped you had an Infinity...

    Thanks Bob. I had hoped you had an Infinity Greenspeed with zoning system like mine and we could compare the system event logs. This system uses proportional dampers like the old Parker system...
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    This is offtopic for this thread but I could not...

    This is offtopic for this thread but I could not figure out how to contact HotRodRob another way so please forgive me for posting off topic. I will start a new thred for this but would greatly...
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    Thank you. I have emailed Carrier and my...

    Thank you. I have emailed Carrier and my installer about the model plug. Maybe they overlooked that but the blanks in those fileds was included in my first report of this problem 2 weeks ago when I...
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    Thank you for making it a separate post. Sorry I...

    Thank you for making it a separate post. Sorry I did not understand. The company who installed the system is great and is coming tomorrow to take static pressure meausrements from the ducts to...
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    Sorry, I did not see your question until after I...

    Sorry, I did not see your question until after I made the follow-up post. Both the 3 ton and 5 ton have the same AHU - FE4ANB006T00 except the 5 ton was a slightly different model from 2 years ago...
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    More on the Carrier Greenspeed Problems

    Here's an observation on our 3 ton 25VNA system supporting my concerns that the control algorithms are seriously flawed:

    This is the system that has had 254 "Zone I airflow limited stage downs"...
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    Carrier Greenspeed/Infinity problems

    This reply is to ask ISUREDO for his insight into my problems with two new Carrier 25VNA systems with variable speed compressors.

    The 5 ton unit is experiencing excessive 161 code (Excess Static...
  25. The current issue (actually last week's) of "The...

    The current issue (actually last week's) of "The News" (www.achrnew.com) had an article confirming Carrier uses the Copeland Variable Speed compressor in this product. I am anxiously awaiting pricing...
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