Let us inform that the machine did not malfunctioning, this means that it has been worked as programmed and as designed.
The machine function was changed to manual and in that time did not be monitoring, in manual there is no limit of working for the burner.
The system was explained to end user and described in Manual, although we realize that a warning should be stated.
We acknowledge your concern about this issue and we will work for an acceptable solution.
As conclusion, we can’t make the reparation at our cost, but agreed to have the 40% of the cost of it, and Grohe to pay the 60%.
If you agree, please issue the order to prepare the material.