The fan on the back does NOT run permanently. Here, a smart control system is responsible for ensuring that it only runs when it is really necessary. This reduces noise and energy consumption. Especially when the cooling/dehumidification is running, the fan turns on to pull the cool air up behind the panels and mix it with the heat of the lamp and heater (if necessary). The air mixture is then distributed in the system via the fans in the module. This creates a homogeneous air mix and significantly improves efficiency in the system, as it removes the cool air as quickly as possible.
