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    Vaillant Ecotec Pro 24 - Boiler doesnt stop heating

    Hi, I have a Vaillant Ecotec Pro 24 boiler. Tonight I noticed that the heating was constantly on and the boiler didn't stop working. I checked the codes on the display and nothing seemed to be wrong. S.0, S.31, S.4 Everything works fine I can see the temp change on the display but it just...
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