Ecodan heats water only to 39C with heat pump in warm weather

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FrankGr
FrankGr ✭
edited July 2022 in General Questions & Topics

My Ecodan only heats the DHW (Domestic Hot Water - in the boiler) to 39C by using the heat pump while it is 30C outside. I have to use the immersion heater (= pure electric) to increase the temperature further!?

My installer tells me that this is normal, because heat pumps are designed/optimized to work in moderate temperatures.

To me this sound not very logical.

I've read the user manual, service manual, but did not find useful/relevant information.

Who can help me?

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