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  1. #1
    Join Date
    Jun 2019
    Location
    So Cal
    Posts
    371
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    Copper-Fin ll boiler and water heater

    Hello guys,

    For the past 4 days one of our Copper-Fin water heaters continues to go out on a code I cannot find a description for.

    The code is - LOCK OUT ADCERR JUMP S 1

    Anyone on here familiar with this code and or brand?

  2. #2
    Join Date
    Aug 2015
    Location
    Buffalo,NY
    Posts
    956
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    Some information would help. Model and serial to serial to start


    Sent from my iPhone using Tapatalk

  3. Likes Jettinvr6sc liked this post
  4. #3
    Join Date
    Nov 2011
    Location
    East Side
    Posts
    6,830
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    Yeah, there are different controls depending on the unit age.

  5. #4
    Join Date
    May 2018
    Location
    VA/DC
    Posts
    265
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    whats happening is the supply sensor is raising temp to quickly. cause is slow water flow most likely. or if you have motorized isolation valves not opening enough. which is also creating a low flow situation.

    the supply sensor is a dual sensors. S1 and S9. S9 is a 20k and S1 is a 5 k i believe. ( not applicable to this questions, Just good info)

  6. #5
    Join Date
    May 2018
    Location
    VA/DC
    Posts
    265
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    did you go to lochinvars website and get the service books? they have everything readily available for pdf downloads.

  7. #6
    Join Date
    Sep 2012
    Location
    Michigan
    Posts
    86
    Post Likes
    It's a supply water temperature sensor issue. Had one doing the same thing, had to replace sensor. All is well since.

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