IKEA from Whirlpool DFW B10W 11 flash error

This is an integrated machine.
I had a drainage problem initially. Cleared the filters, seemed to reset the machine and started. This cleared the water but then stopped shortly after starting up, beeping with a flashing LED on the start button.
Tried a few things after looking at this site, e.g. hold down start button for 30 secs, turn off power on panel, start again on rinse. Nothing has yet worked.
The LED flashes 11 times, then brief pause, then 11 times again etc.

Any advice?

Take the mesh filter out and make sure the black grid in the bowl isn't bunged up. Be careful when cleaning it as the diaphragm is easily damaged.

Cheers. I'll try it tomorrow morning. Here's hoping.

I am pretty sure I did what you suggested. There was some material to remove. Ran on rinse again and a minute or so into the cycle it errors again, than pumps out OK, then sits beeping.
Is there any way to find out what the 11 flash code means?