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  1. #1
    Join Date
    Apr 2009
    Posts
    18

    Cvhf drive problem

    Working on cvhf570 and have orange light blinking on D4( active rect. status) in drive. Drive is a frame 3, refrigerant cooled. Have had problem with drive going into over temp. Refrig pump was running , no delta P. Have removed charge and 200 pounds short. First time at site. Any input appreciated.

  2. #2
    Join Date
    Jan 2011
    Posts
    1,171
    Murphman, you need to get a few more posts and apply for Pro status. This type of problem shouldn't be hashed out in an open forum.

  3. #3
    Join Date
    Apr 2009
    Posts
    18
    Trying to get there. Still need some help. Guess this will be post #15.

  4. #4
    Quote Originally Posted by murphman View Post
    Working on cvhf570 and have orange light blinking on D4( active rect. status) in drive. Drive is a frame 3, refrigerant cooled. Have had problem with drive going into over temp. Refrig pump was running , no delta P. Have removed charge and 200 pounds short. First time at site. Any input appreciated.
    check your condenser water flow and tower control, operation. what are your water temps? also check the afd fans any dirt, dust build up on drive. is it in a dirty environment?

  5. #5
    Join Date
    Oct 2010
    Posts
    28
    first check the following,


    Measure refrigerant pump discharge pressure and
    compare to the condenser pressure. It should be 10-
    15 psid.
    Measure drive coolant line delta-T.
    Operate the condenser at or below design
    temperature. Elevated tower water temperatures
    will raise drive temperatures

  6. #6
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,317
    Ad New York said, this is an issue that should discussed in the pro section. You have the required posts now.

  7. #7
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,381
    Quote Originally Posted by R123 View Post
    Ad New York said, this is an issue that should discussed in the pro section. You have the required posts now.
    Why not just help the guy if you can? what kind of issues can/cant be discussed here?

  8. #8
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,388
    Quote Originally Posted by valdelocc View Post
    Why not just help the guy if you can? what kind of issues can/cant be discussed here?
    you seem to be a slow learner on this 'open forum/dangerous topic' issue. Why don't you help him?

  9. #9
    Join Date
    Jun 2013
    Location
    Chicago
    Posts
    8
    The muphman should get the cheap ass contractor that he work for to send him to trane school.

  10. #10
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,381
    Quote Originally Posted by jayguy View Post
    you seem to be a slow learner on this 'open forum/dangerous topic' issue. Why don't you help him?
    Dangerous topic? you are delusional! I been in the trade for over 20 years,haven't done a whole lot with chillers but as you know well a chiller is not more dangerous than a residential furnace, I actually think the furnace may pose a bigger danger, the more I work on chiller the more I realize that there is nothing to it.
    I cant help him cause I don't have the answer to his questions, definitely not afraid to help others, after all that was what this forum was all about.

  11. #11
    Join Date
    Jun 2013
    Location
    Chicago
    Posts
    8
    Hey muphman I hope I can get the pro levle soon so you can get the help you need. Only 13 more post to go I hope your chiller can sit till then.

  12. #12
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,381
    found the manual, hope it helps.
    Attached Files Attached Files

  13. #13
    Join Date
    Oct 2010
    Posts
    28
    murphman in order to help you more i need more info(what other diagnostic codes is the vfd giving you,we are here to help)

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