miele Miele novotronic w 807

I have a Miele novotronic W807 (20 years without problem) yesterday started to make me this: Starts washing, draws water, it starts the main wash which takes too long (almost double time than ago) and when it's to go to the next step (rinse) crashes and then begins flashing the light of main wash(hauptwasche). https://www.youtube.com/watch?v=RWdLHmf ... e=youtu.be 1. If i leave it so, the light blinks and then after half an hour, the machine proceeds to the next step (rinse) lamp lights for rinsing, but the light of the main wash keeps flashing and the machine completes normally all subsequent stages (rinsing, wringing, emptying). 2. If I close the laundry once stuck the light of the main wash, reopen it and go to the next steps manually, the light unstuck, and the machine works normally. Checked the filter, drain pump, pressure switch show all ok. Cleaned and all tubes but the problem remains. Thanks for any help.