rayxxxxx
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rayxxxxx
I’ve got the same issue: buh step 1 and buh step 2 are OFF when the backup heater is ON.
I've got the Altherma 3 H HT ECH2O too and I installed ESPAltherma and all works fine 
> > 've got the Altherma 3 H HT ECH2O too and I installed ESPAltherma and all works fine > > @rayxxxxx May i ask you which definition file you...