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Vitodens troubleshoot = no DHW

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[Deleted User]
[Deleted User] Posts: 503
in THE MAIN WALL
Sometimes, if the brain "sees" a brwon out ocndition, it forgets its function in life.

Reboot the onboard computer and things should return to normal.

May want to consider an UPS if it continues to happen.

ME

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  • Charlie_11
    Charlie_11 Member Posts: 10
    Vitodens troubleshoot = no DHW

    All was well for 1 year and now no DHW. Seems the boiler just runs at 84 degrees and never bumps up to heat the DHW.
    No faults that I can see. Any ideas? Thanks
  • Brad White
    Brad White Member Posts: 2,399
    We had that once

    coincidental to a power outage on Thanksgiving night. A re-boot solved it.

    I offered that nugget up in similar thread not long after that time. In the end for that questioner it was a loose spade connection on the DHW cylinder.

    BTW, the Vito has run flawlessly since then.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"



    -Ernie White, my Dad
  • justme_4
    justme_4 Member Posts: 3
    NO DHW

    Check coding. Call Viessmann
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