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vitodens 100-w not heating

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vyesilyurt
vyesilyurt Member Posts: 1
in Gas Heating
However, after I restart the boiler it starts working. It works 6-8 hours then same issue happens again. No error code on screen, water pressure looks ok too. It shows tap water / heat radiant symbol on screen but burner is not on. I came across a video that suggests it is either a flow sensor or circulation pump problem in the combi plus kit. or is it flow switch issue? Any help, appreciated

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  • Derheatmeister
    Derheatmeister Member Posts: 1,659
    Which Model WB2A,Wb2b ? Are you in the US or EU?...Water presure before Light off at PSI /Bar?
    New install or up and running for years without issues until now..
    Setback adjusted via a time Program ? Infloor or Rads? Time constant adjusted ?

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