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  1. #1
    Join Date
    Jun 2003
    Location
    Gulf Coast
    Posts
    190

    johnson controls AP-VMA1420-0 repair

    I have an account with several thousand AP-VMA1420-0 and the coupling that connects the motor to the shaft have started breaking about 60 this year alone . Been talking with JCI to see if they sell a rebuild kit or just the coupling but no luck yet. Has anyone found a source of replacements or a fix for it.
    Thanks
    Walter

  2. #2
    Join Date
    Oct 2008
    Location
    So.Cal.
    Posts
    6
    Walter,
    JCI is no longer selling the AP-VMA1420 N2 VAV controllers as componets for the product are near impossible to get any more. Their replacement will be the new "MS-VMA1832" or "FX-" PCV1832....one feature of the new VMA is that the gear/coupler section is replaceble. Not availible on the old VMA. Some changes with wall sensors may have to happen depend of what you have. Here are link to lit on products.
    http://cgproducts.johnsoncontrols.co...opframe.aspx&0
    Good luck, Dave

  3. #3
    Join Date
    Jul 2008
    Location
    Seattle, WA
    Posts
    49
    In most cases you will not need to change the wall stat. They come with a nice wiring harness. To be honest my opinion is the #1 drawback is your programming and commissioning it with CCT and some customers might be experienced with HVACPro.. I haven't looked into it but its a pretty fair bet your not likely to be commissioning them through passthru either.

  4. #4
    Join Date
    Apr 2013
    Location
    Minneapolis, MN
    Posts
    27
    TMZs are the main stats that dont work with the vmas. The rest should be fine.

  5. #5
    Join Date
    Jan 2007
    Posts
    145
    Stromquest has replacement coupler for the AP-VMA1420-0

  6. #6
    Join Date
    Jun 2003
    Location
    Gulf Coast
    Posts
    190
    Quote Originally Posted by phantomtech View Post
    Stromquest has replacement coupler for the AP-VMA1420-0
    Do you have contact info for stromquest?

  7. #7
    Join Date
    Jun 2003
    Location
    Gulf Coast
    Posts
    190
    Would it be stromquist

  8. #8
    Join Date
    Jun 2003
    Location
    Gulf Coast
    Posts
    190
    phantomtech thanks for the tip I contacted stomquist today and ordered 25 to start

  9. #9
    Join Date
    Feb 2011
    Location
    Florida
    Posts
    70
    I work for Stromquist and the part for the bushing that fixes the VMA4120 is called VMA bushing.
    http://www.stromquist.com/default.as...de=VMA-BUSHING
    HVAC Tech of 33 years in the HVACR and Controls Industry

  10. #10
    Join Date
    May 2013
    Location
    3600 Chamberlain Lane Suite 148 Louisville, KY 40241
    Posts
    103
    Does anyone know where to get replacement DP sensors for the VMA1420? I work for a company that repairs them but I can not source this part anywhere. It is a Setra sensor and it has a range of 0-1.5 or 0-1 in WC. Even though the units that I have seen do not have an issue with this senor would like to find a source just incase.

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