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  1. Replies
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    I should have said: "That's what happens when...

    I should have said:
    "That's what happens when CLOSE and COMMON are reversed at the Zone Board when an OPEN signal is applied to the actuator by the Zone Board."
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    I don't think it will matter. If you are...

    I don't think it will matter.

    If you are testing this in the shop just apply 24 vac between OPEN and CLOSE terminals on the actuator leaving the COMMON actutaor terminal disconnected.

    I think...
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    Have you had a chance to reverse CLOSE and COMMON...

    Have you had a chance to reverse CLOSE and COMMON on an Infinity zone board and verify that the Damper/Sensor check still opens and closes dampers properly?
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    That would be great. Once a professional member...

    That would be great. Once a professional member can verify this others will benefit.

    By the way, if you reverse OPEN and COMMON and not CLOSE and COMMON I don't think the damper will ever CLOSE...
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    Yes that's exactly the scenario and certainly no...

    Yes that's exactly the scenario and certainly no need to apologize - I continue to appreciate your input and advice and acknowledge communcation like this is often unclear.

    And especially...
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    I am not reading anything that's not there. It...

    I am not reading anything that's not there. It says run the test to insure proper wiring. That means if the test runs and everything works properly that should guarantee (ensure) proper wiring. It...
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    By that comment are you saying you believe...

    By that comment are you saying you believe running a Damper/Sensor check and verifying each damper opens and closes when the system commands it to open and close DOES "ensure dampers and sensors are...
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    Above in your post you say you have known "this"...

    Above in your post you say you have known "this" for 14 years but what are you referring to by "this"?

    Do you mean you have known the Carrier documentation is WRONG and that the DAMPER/SENSOR...
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    I agree with you about "integrity". My installer...

    I agree with you about "integrity". My installer is top notch but his tech (no longer with that company but not for this reason) did make the original wiring mistake but if Carrier had not published...
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    Damper/Sensor check does NOT verify proper operation or correct wiring

    lkapigian:

    I want you to be direct and promise I don't take offense.

    I am apparently just not communicating well and will try harder to more explicit.

    I did not mean to imply the...
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    My dealer has been incredible and even though...

    My dealer has been incredible and even though Carrier's documentation error has cost them a small fortune as they have tried to solve this problem "they" are not the ones pointing this out. "I" am!...
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    Perhaps I wasn't clear. The Carrier documentation...

    Perhaps I wasn't clear. The Carrier documentation is absolutely WRONG!

    A Damper/Sensor check will NOT verify the wiring is correct if CLOSE and COMMON are reversed.

    The Damper/Sensor check...
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    It's hard to believe but after enlarging the duct...

    It's hard to believe but after enlarging the duct system numerous times (each time to Carrier Enterprise's - the distributor not Carrier Corporation - specs and replacing everything in the system...
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    You had my solution 4 years ago but a documentation error cauused it to be ignored

    Davo,

    You gave me the solution to my problem 4 years ago! You said:

    "I had a weird scenario once where my men reversed common and either Open or Closed at one damper out of 6. This caused all...
  15. Are any manufacturer's VRF fan coils true variable speed?

    Can anyone tell me if any manufacturer of variable refrigerant flow systems makes fan coils that are true variable speed?

    All specs I can find show 2 or 3 speeds not infinitely variable. Even the...
  16. Any experience with Daikin's DZK zone damper kits?

    We're considering a 14 ton Daikin VRV IV system that would use 3 of their four zone DZK kits to serve 12 zones from three 4 ton fan coils. Has anyone on the forum had any experience with the DZK kits...
  17. I may have partially answered my own question...

    I may have partially answered my own question about the DZK not having a 3 foot straight duct section before dampers: I watched a video on UTube and see that the FXMQ fan coil has its fan between...
  18. Daikin FXMQ48PVJU question (and DZK question)

    Can anyone tell me if the Daikin FXMQ_PVJU DC powered fan coils operate at infinitely variable speeds or 3 fixed speeds?

    The specs show 3 speeds: 1377 / 1165 / 988 cfm for the 4 ton model but...
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    pecmsg: If you think it is relevant perhaps...

    pecmsg:

    If you think it is relevant perhaps you can delete my post and re-post this to this old thread (I'm not a professional member but this information may be of use to members):

    I...
  20. Ok, we'll leave it at that. Thanks

    Ok, we'll leave it at that. Thanks
  21. I think it was 22 degrees here today so it will...

    I think it was 22 degrees here today so it will be awhile before I get a chance to do that.

    One last try at convincing you: When you suddenly un-cap the pressurized 200 foot hose in your example...
  22. If you have actually done this and gotten a...

    If you have actually done this and gotten a different reading there are two possibilities:
    1. There was some leakage so therefore "flow" causing a pressure drop, or
    2. You used a different pressure...
  23. If there was no flow it actually will read the...

    If there was no flow it actually will read the same pressure at the faucet and at the end of the long hose. Not while it's flowing but once the capped hose is filled and flow stops the pressure will...
  24. Right, I think the very long tubes are masking...

    Right, I think the very long tubes are masking the pulsating pressure reducing it to a very tiny vibration of the gauge needles. Of course if this were a case of truly "static" pressure (as it...
  25. Exactly! But I have seen my system running the...

    Exactly!

    But I have seen my system running the compressor at 100% with all but one zone satisfied and that one within one degree of its set point. But I blame that on "misinformation" the system...
  26. It's actually not a communication problem. There...

    It's actually not a communication problem. There is no feedback signal they can look at to determine if a damper is open or not. It is an "open loop" control. The system applies 24 vac to the...
  27. Thanks for your reply. I will definitely...

    Thanks for your reply. I will definitely consider the Trane. Incidentally my duct system met the Carrier guidelines when the system was installed and has been enlarged "several" times and each time...
  28. Can you recommend the next best variable speed condenser based zoning system?

    I will soon be replacing Carrier 5 ton and 3 ton Infinity Greenspeed systems with 4 zones each which I still think is probably the best zoning system made "when it works" but my 5 ton hasn't for 3...
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    Question for a Daikin expert!

    We had a Daikin 4 ton condenser with 4 ducted air handlers totalling 5 tons installed on my daughter's house of about 2500 square feet. It's well insulated with foam in walls and roof.

    It seemed...
  30. 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...
  31. 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...
  32. 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...
  33. 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...
  39. 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...
  41. 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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