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  1. #1
    Join Date
    Jan 2001
    Location
    Carlisle, Pa
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    Copeland digital scroll controller

    I have a question about how the unloader solenoid is controlled. I am working on a dx dehumidification unit. THE units controller supply a 0-5vdc signal to copeland controller. I know below 1.4vdc compressor is to be off. I saw capacity control signal dropped by it didn't seem to correspond to unloaded. Maybe it's just the time delay built in.

  2. #2
    Join Date
    Jul 2000
    Location
    Guayaquil, EC
    Posts
    13,461
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    Quote Originally Posted by hvac17011 View Post
    I have a question about how the unloader solenoid is controlled. I am working on a dx dehumidification unit. THE units controller supply a 0-5vdc signal to copeland controller. I know below 1.4vdc compressor is to be off. I saw capacity control signal dropped by it didn't seem to correspond to unloaded. Maybe it's just the time delay built in.
    I hope this helps:

    https://climate.emerson.com/OPI/docu...A15Dae1328.pdf

  3. #3
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
    6,255
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    That link does not seem to work.


    Sent from my iPhone using Tapatalk

  4. #4
    Join Date
    Jul 2000
    Location
    Guayaquil, EC
    Posts
    13,461
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    Quote Originally Posted by heatingman View Post
    That link does not seem to work.


    Sent from my iPhone using Tapatalk
    Try this: https://opi.emersonclimate.com/CPID/...AEB/ae1328.pdf

  5. #5
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
    6,255
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    That one works


    Sent from my iPhone using Tapatalk

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