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Vitoden Short Cycling

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scott markle_2
scott markle_2 Member Posts: 611
in THE MAIN WALL
Still can't except this as normal, It's got to be bad for equipment. Thanks for the follow up call to Viessmann though. I believe that even if the burner must light on high fire there is a control based solution to this problem. I'm not seeing this on similar sized system with GB142 and tekmar 420. I maintain that a load based variable differential would greatly reduce this. Of note the GB tekmar setup I refer to was reaching target temp. faster than I felt it should, not dropping to min. modulation as fast as it should. I called Tekmar about this and they were quick to reveal that a newer software version than the one on my board existed. Three days later a replacement board arrived fedX which resolved this. Nice when a company will acknowledge a product shortcoming and be proactive in resolving it

Comments

  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928


    Viessmann assures me there is no "Euro LGM" fix and that the "pulses" I see are normal for this system with the boiler "designed to do it". As I said years ago, you "may or may not see this 'pulsing'" depending on the system and how it's connected to the boiler.

    I'm pig-headed however and I'll still see if I can actually increase efficiency. If not via solar (GREATLY preferred), I'll try outdoor sensor diversity and even heat tape.
  • jp_2
    jp_2 Member Posts: 1,935
    heat tape??????????????????

    really mike, what are you going to gain by this other than high electric bills?

    have you considered what it costs to maintain say 3000 btuh heatloss?
  • ALH_4
    ALH_4 Member Posts: 1,790
    heat tape

    If Mike starts calling his Vitodens "Precious", I think we should have an intervention. ;-)
  • justme_4
    justme_4 Member Posts: 3
    LGM

    Scott,

    What version of LGM do you have? If you are unsure call Viessmann to find out
This discussion has been closed.

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