Zanussi TE 855 V washing machine drains continously

Hello,

I have an old Zanussi TE 855 V washing machine.

The filter under the drum has been full and completely stuck. I realised it after washing, so water was sitting inside the drum for a few hours.

I have cleaned the filter, and put it back.

Now my problem is the following:

• When I am starting a washing cycle, the drum starts rotating, and cycle is being interrupted almost immediately (like 30 degrees of drum movement), and starts draining for 2-3 mins. I need to restart machine after draining finished to start new washing cycle, which again results in draining.
• I have checked the pressure sensor. I can trigger it if I blow air into it. Pressure sensor have 3 state. If I am blowing enough air, to reach 1st state, and holding the tube, to hold the pressure inside, then I am able to start a cycle. The drum rotates continously, but after a few minutes interrupts cycle and starts draining.
• I checked the air hose, it is not stucked.
• If I am putting few liters of water into the drum, and start a cycle, then cycle starts normally by turning the drum a few times, and normal drain cycle starts. After the drain is completely emptied the water out of the system, then cycle is getting interrupted, and the drain cycle starting again,

Does anyone have an idea where the problem could come?