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Solar PV Hints, Tips & Troubleshooting

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Comments

  • #4602
    GarlicBed
    Registered Users, Registered Users 2 Posts: 45 ✭GarlicBed


    https://www.boards.ie/discussion/comment/122649147#Comment_122649147

    If the app is showing correct then its getting the info from the eddi (Via hard wired CT or Harvi).

    I'd try the myenergi forums .



  • #4603
    championc
    Registered Users Posts: 6,185 ✭✭✭championc


    Take a pic of the actual Eddi screen.



  • #4604
    viewofthehill
    Registered Users Posts: 28 ✭viewofthehill


    https://www.boards.ie/discussion/comment/122642858#Comment_122642858

    I have a call in with Sofar support but am still waiting for a reply.

    The same pattern was showing earlier this morning so (in standard IT practice) I turned off the DC isolator switch and then turned it on again and the voltage in both arrays went up to over 300volts. Today is extremely overcast so there is very low light but the voltage still went up to over 300 on both strings. Can anyone think of anything that would be reset in a reboot that may cause this to happen.

    image.png
    image.png



  • #4605
    10-10-20
    Registered Users, Registered Users 2 Posts: 7,563 ✭✭✭10-10-20


    https://www.boards.ie/discussion/comment/122653288#Comment_122653288

    Hmm - it might be like @graememk suggested and be a bad connection, possibly in that isolator switch. Sometimes you can get a build-up of corrosion on the contacts and they cause resistance and voltage issues… but that's typically associated with localised heating on the isolator. One thing to mention is that it's risky to switch high-current DC like that (even if it's in a faulted state) - the DC isolator is not supposed to be operated before the AC and battery load is first isolated or shut-off.

    See does the system stabilise after operating that isolator, and if it comes back then repeat the test (with no load) and then it might give you an indication that it's a faulty isolator… except I have my doubts.



  • #4606
    graememk
    Moderators, Home & Garden Moderators Posts: 6,309 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122653324#Comment_122653324

    There was no external indication on the isolator I seen. But you knew about it when opened, the smell was awful.

    On my one it wouldn't even turn off, just rotated and sprung back into the on position.

    It's definitely worth an investigation, and during daylight there's 3-400v in that isolator.. on each string.



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