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Fan_1File:Fan 1.jpg|Picture 1: Ventilation system without cover blinds openFile:Ventilation 2.jpg|Picture 2: Ventilation system without cover blinds closed
→Problem description: typo fixed
== RL-50 ==
The RL-50 is a decentralized home venting system with heat recovery. Its an older version of the product found here: [https://raumluft-shop.de/lueftung/dezentrale-lueftungsanlage-mit-waermerueckgewinnung/rl-markenprodukte/rl-pro-serie.html?_gl=1*17a126y*_up*MQ..&gclid=Cj0KCQjw4bipBhCyARIsAFsieCxTUg758aq0k950sxNz8_LKt-v1TJfpNEAe91tllpO1hZcowbKIEvAaAgibEALw_wcB product website]
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=== Problem description ===The blinds, which you can see in picture 1 as the horizontal white elements in front of the fan, are not closing anymore if the system is turned off. Its not a big problem and the basic function of pushing the air out or pulling it in, is not affected, but the brown/red heating element gets very hot after some time and I'm worried that this could lead to a fire if i leaf leave it like this.
This brown element on the top right of picture 1 is a heating element, which pushes out a small plastic rod if a voltage is applied on the terminal on the top left of the element, and thereby opening the blinds. It seems that there is always a voltage applied to the element. The light bulb on the bottom right of the picture 1 is lit up and probably indicating that there is a voltage applied to the heating element.