Mm200 CR1 Relay wiring
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  1. #1
    Join Date
    Oct 2010
    Location
    Indianapolis Indiana
    Posts
    1,075

    Mm200 CR1 Relay wiring

    Got a mm200 in today.

    Sn JB555....

    Cr1 is completely missing.

    I suspect it had the old open style relay, and someone thought they could install the new enclosed style "when they got around to it."

    Problem is, the wiring diagram I have, does not match the service manu al for a newer mm200. (Tells you what wire is from what COMPONENT)

    I have the following wires:

    #32
    #16
    #21
    #3 (pair)
    #24
    #1 (pair)
    #22

    Help please....
    Miller Dynasty 200DX
    Miller Spectrum 250D
    Miller Millermatic 200
    Bunch of old blue dinosaurs....

  2. #2
    Join Date
    Oct 2010
    Location
    Indianapolis Indiana
    Posts
    1,075

    Re: Mm200 CR1 Relay wiring

    From what I can tell on the unit's wiring diagram....

    32 is 24 volts
    16 is plg2 or cr1
    21 is Cb1
    3 is plg2 or main contactor
    24 is SR1
    1 is fan motor or 115vac fuse
    22 is C3 or R1

    None of this matches the service manual diagram as pictured
    Attached Images Attached Images  
    Miller Dynasty 200DX
    Miller Spectrum 250D
    Miller Millermatic 200
    Bunch of old blue dinosaurs....

  3. #3
    Join Date
    Oct 2010
    Location
    Indianapolis Indiana
    Posts
    1,075

    Re: Mm200 CR1 Relay wiring

    To anyone needing help on this:

    32 is A or B pole
    16 is A or B pole
    21 is common, same side of relay as 24
    3 is normally open, same side of relay as #1
    24 is normally open, same side of relay as 21
    1 is common, same side of relay as #3
    22 is normally closed
    Miller Dynasty 200DX
    Miller Spectrum 250D
    Miller Millermatic 200
    Bunch of old blue dinosaurs....

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