Results 1 to 3 of 3

Thread: Danfoss VFD

  1. #1
    Join Date
    May 2018
    Location
    St.Petersburg
    Posts
    126
    Post Likes

    Danfoss VFD

    York make up air
    Model : Z34M5IANEH0001A
    Serial: N1N3319796

    System disconnect off on arrival,start up 3 of the compressors turn on and ODF kicks on but no blower, check in and see the VFD screen is blank. Do a reset and LCD screen is back, still no blower and getting alarm 7 - dc overvoltage , I followed the few troubleshooting tips I could from the manul, not sure what connecting a brake resistor would do? , just wondering if anyone has seen this or are familiar with VFD's. Going back tomorrow and calling Tech support but, just want to see if I can't get some info before hand , thanks!

  2. #2
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    851
    Post Likes
    Have you don a serch for a danfoss service manual?

  3. #3
    Join Date
    Feb 2006
    Location
    Where the wind comes sweeping down the plain
    Posts
    328
    Post Likes
    Not sure which model you have, but out of my Trane TR200 manual (equal to VLT-6000 I believe), it says...
    "If the intermediate circuit voltage exceeds the limit, the frequency converter trips after a time.
    Troubleshooting:
    Extend the ramp time
    Change the ramp type
    Activate functions in par.2-10 Brake Functions
    Increase par.14-26 Trip Delay at Inverter Fault"

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.