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vitodens room temperature hook up

prunoki Member Posts: 6

Could someone explain to me what Vitodens means by "room temperature hook-up"? I have a weather controlled Vitodens 200 and when it is cold outside the heating overshoots even with a low heating curve. I wondered if setting the b0 code to 3 would help, but I do not want to tinker with it without knowing what it is.