Dear all, I have a Vitodens 200 W and I am quite happy with it. I have a photovoltaic plant on the roof and in the transition period before/after the heating season, I would like to use extra generated electricity for heating the house. I have installed an electric tankless water heater in series with Vitodens. I plan to use Vitodens circulation pump to simplify the control, armature,... I knew that Vitodens run circulation pump through the transition period. I was little bit surprised twice during last days. First I learned that the Vitodens reported that it is in Reduced energy saving mode (SummerEcoMode,...) with the circulation pump off. I found in this forum, that when the preset in house temperature is larger than outer temperature, the Reduced energy saving mode will switch off. I preset the temperature to higher number and pump went on for several days till today. Today the outer temperature is extraordinarily hot and probably exceeded some threshold. In next days the outer temperatures should go low and my house has very big thermal capacity and reasonable insulation. I need to switch on the circulation pump and guarantee it running so the electric heater is not overheated. A "feature": "heating.circuits.0.circulation.pump" does not have any commands to be controlled. Maybe there is a possibility to disable reducedEnergySaving or some similar workaround. I am able to communicate via API programmatically and it works otherwise well. Do you have any idea, how to solve the problem. Best Regards, Vladimir
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