the only thing it has is a code that says k6z2 and is placed at the entrance of the cold water. I don't have the picture now on Monday I can upload it
I do not know the model but I thought that as you are told there are only 3 types of input sensor: magnetic on-off, magnetic on-off with support of flow meter sensor, and a third control that would have a freezing sensor which would prevent it from working in freezing case.
Thank you very much for your help it was vital to repair the equipment, knowing that the sensor is magnetic, I prepared to test it and it was useful, and after that I checked the cold water inlet and the problem was where I had to repair the floating magnetic that has integrated into said input. Thanks for all the comments