Underfloor heating air-water heat pump. House too warm when the sun shines

In the bathroom, the limit of what is possible will then have been reached. Too little heated area. You can only increase the supply flow and throttle the other rooms again to avoid overheating there. This naturally increases consumption.


If available, close the bypass valve, turn the ERR fully open, or remove the actuators, and open the Taco setters. If there is still too little flow in the system, increase the circulation pump speed.

Everything except the circulation pump is already done. How can I turn this up?

Good running pattern even with reduced heating circuit hysteresis of 1.5K. Only 3 heating cycles. Please try again with a further reduced heating circuit hysteresis of 1.0K. I would halve the hallway again. Living room fully open. Use the room as the lead room and then adjust the heating curve accordingly. I’m afraid the bathroom has too little heating surface to reach 22°C with underfloor heating alone => supplement heating as needed with the towel radiator. The pump optimization will only become active at an outside temperature of >1°C, so no effect can be seen yet. Does your heat pump have a heat meter? [ATTACH alt="29-30-Dezember.jpg"]41317[/ATTACH]

Maybe an infrared heater or an electric towel radiator in the bathroom as an additional heater might be worth considering. If you throttle back the rest now, all rooms except the bathroom will be heated less efficiently than possible. And in the bathroom, you could make it two degrees warmer when needed using a timer