Vitodens 300

Discussion in 'Engineers' Talk' started by Bb1984, Nov 18, 2023.

  1. Bb1984

    Bb1984 New Member

    Hi all
    I have vitodens and hot water is working great.
    The heat to radiator is not working, it works just if i shutdown the vitodens and start it again, then it pumps hot water to radiator in maybe 20 sec and it stops.

    i can se that step motor is pushing up the pump when it stops, but if i take the linear step motor out it runs constantly and i have warm.

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