Cost maintenance Vaillant Therm plus VWL 75/6 A Height ok?

For the Vaillant devices that I know, there is no explicit professional technician documentation. There is the instruction for the respective control panel. Once a "normal" part for the end user and a part, which continues with the professional technician section as shown in my snippet.

P.S. I looked it up. The standard for operating the heat pump is a senso Comfort VRC 720 1. In its manual it says (dear , reading the instructions helps ;))


You can then enter a maintenance date for 2035 under:

and everything is fine.

There is only the 00 or the 17 :) The 17 on the heat pump itself, the 00 on the Comfort control unit...

done, it worked perfectly. Thanks. :)