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  1. #1
    Join Date
    Sep 2003
    Location
    Western PA
    Posts
    1,368

    Carrier step controller

    I have a Carrier Chiller Model 30HS100-D600. Serial 9009J00484.
    The old motor and cams assembly is in need of replacement. Local carrier dist. says no longer available. Looks like part # HH82AZ209.
    Local 449?

  2. #2
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,064
    https://customer.honeywell.com/resou...0s/63-7147.pdf

    Ive used the Honeywell T775 with expansion modules to retrofit older Tranes that used the cam step controller with success. Might work for your Carrier as well..

  3. #3
    Join Date
    Jul 2005
    Location
    south
    Posts
    601
    we converted a pair from the mechanical controls over to Honeywell staging controllers. Pretty straight forward and more reliable.
    Standard module = 4 stages add a expansion module for an additional 4 stages
    Attached Images Attached Images

  4. #4
    Join Date
    Sep 2003
    Location
    Western PA
    Posts
    1,368
    Worked on an air rotation unit that used that control. Had a class on it once. Thanks guys.
    Local 449?

  5. #5
    Join Date
    Oct 2011
    Location
    La.
    Posts
    284
    That machine should be almost 25-30 years old. Sounds like a good time to upgrade. I love work on the oldies. Its sad that the new units will never hit that life expectancy.

  6. #6
    Join Date
    Sep 2002
    Posts
    2,887
    Wow,Carrier Step Controller! Thats something from my childhood! I had a training manual on it from Carrier,got to look for it. You had to be good to work on Carriers in those days!

  7. #7
    Join Date
    Jul 2000
    Location
    Dallas,Texas
    Posts
    4,985
    I remember when you could buy the balancing relay assembly and just replace parts of the step controller.
    It's a different world now.

  8. #8
    Join Date
    Sep 2002
    Posts
    2,887
    Yep ,time guard,multi function time guard,no two did the same thing or was wired the same.One of the first to use stator stat thermistors,pilot warp switch with sealed combustion chambers and much more!

  9. #9
    Join Date
    Sep 2003
    Location
    Western PA
    Posts
    1,368
    That manual would be cool.
    Local 449?

  10. #10
    Join Date
    Sep 2003
    Location
    Western PA
    Posts
    1,368
    Here is the controller.
    Attached Images Attached Images
    Local 449?

  11. #11
    Join Date
    Sep 2002
    Posts
    2,887
    Yea,that white thing all the to the right is the balancing relay,the other relay is the recycling relay so it don't start in the last position with everything on.

  12. #12
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,368
    I still have the multi function time guard control wiring for a 30GA burnt into my memory. The 30GA and CGAA were the chillers I cut my teeth on. I remember jumping B to B1 to get the compressor going when I didn't want to wait the 15 minutes. The last 30GA I worked on was in the summer of 2005.

  13. #13
    Join Date
    Sep 2002
    Posts
    2,887
    I would unscrew the cover of the plug in holding relay and push the contacts down to start
    the comp on the multi function,but if I remember right if it had an oil pressure control I could not do that.On the regular you could use a screwdriver to jump it,or the brown relay has a little hole for your test lead to push in the relay. I remember the 30ga,I worked on a lot of the 50bb's all sizes and others. Worked for a very good Carrier dealer when I was a kid,learned a lot there! In those years if you could fix Carriers you could fix anything,Carrier was king at least over here!

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