I find that Nachfüllleuchte is also quite unnecessary, because it only goes to, if there is no more steam comes out.
It should be noted that the steam line of ironing system is pretty hot to iron.
The iron has been tested extensively nine months in a 2 person household.
In addition, only distilled water was used.
There are two star, because despite the problems still can iron with steam so.
Conclusion:
The initial enthusiasm about the device dampened relatively quickly because the steam increasingly caused problems.