Bosch classixx 1400 error code 21 basket symbol

SOURCE: bosch washing machine error code

I've had the same problem, when we had a power cut I opened the door and after that I could only got F21 flashing! ,I googled for the answer and this WORKED:
Turn programme switch to 6 o clock,hold RPM button turn switch to spin, release RPM button

SOURCE: when I select a cycle the -0- is displayed and the lock symbol.

YOU PROBABLY HAVE THE CHILD LOCK ACTIVATED GENERALLY HOLDING THE LOCK BUTTON IF THERE IS ONE OR THE START BUTTON FOR 5 SECS OR MORE WILL TURN IT OFF ALLOWING NORMAL USE

SOURCE: key symbol flashing on a Bosch Classixx 1400

child lock is active usually pressing start button for 5 secs or more cancels it

SOURCE: bosch classixx 1400 express key symbol

Power on, press the start button for 5 or 6 seconds, the sign will go off. Try the door gently.

Pl rate me 'very helpful' for the free help, thanks

SOURCE: key symbol showing

Power on, press the start button for 5 or 6 seconds, the sign will go off. Try the door gently.

Pl rate me 'very helpful' for the free help, thanks