Service code Washing machine Indesit Wib111

Hi, may I ask if anyone knows what this service/error code means?

After a power outage, I wanted to continue the washing cycle. The washing machine would not start. I reset the program by holding the START button for a long time. The washing machine lit up all the LEDs. Then they turned off and nothing happened.

Exactly 20 minutes later, the pump starts running and the LOCK LED begins flashing rapidly, while the RAPID WASH LED flashes a little more slowly. After 5 minutes, the pump stops, but the LED combination keeps flashing in the same way.

There should be two hidden diagnostic LEDs on the inside of the control panel. They are not flashing.

The door lock is working — verified.
The motor works.
The heating element works.
The pressure switch works.
The pump works.

I measured continuity with resistance at the output of the temperature sensor.
The tacho generates voltage according to motor speed when the motor is turning.
The relays on the control board are functional.

Everything was tested outside the washing machine wiring.
The electrolytic capacitors have been replaced.
The triac controlling the door lock is fine and was replaced just in case.

What seems strange, however, is that the door lock engages almost immediately after the washing machine is plugged into the mains. This happens because the processor’s control pin sends a signal to the base of the transistor that triggers the triac.The door lock unlocks only if I unplug the washing machine from the mains.

thank you