Each time the supply voltage is switched on or the parameterization is changed via the app, a 30-minute commissioning mode is performed. During this time the controller signals are switched 1:1 through to the parameterized outputs. The pump and boiler contacts operate with the parameterized switch-on delay and follow-up times. During these 30 minutes, the input signals are analyzed and used to calculate the balancing which starts after the commissioning mode. The controller signals are also continuously analyzed during operation; changes are implemented in the control behavior.