For providing enough hot water for bathing I took the boost-now button this evening- and realised that the heat pump only produced 5 kW of heat.. after switching the Quiet- Mode from level 3 to 1 the power increased to 7-8kW, which seemed to be better for this forced extra demand..
Maybe an additional option in settings to activate an automatic reduction of quiet-level during force mode..?
Greetings Rue