Okofen pellematic boiler screen problem

[Pascal_raulin]

Hello,

After stopping my Okofen Pellematic boiler, it does not restart, apparently the touch screen.

the screen asks me to calibrate it by pushing on the crosses, which go to each corner and to the center. Once this is done, the screen goes white and returns to calibration and this without stopping.

If anyone has an idea to help me ...

I can sense a problem with the screen

merci,
Pascal