Kenwood Error code F2 Help

Hi all

I have a Kenwood slimline Dishwasher that has been working fine for a year or so.

I have suddenly got a F2 error coming up after starting a washing cycle after it runs for a few minutes.

This error is stated as the discharge line in blocked somewhere which I have checked by removing the pipe etc. I have even filled the machine manually with 5 litres of water and started the cycle. The machine pumps outs all of the water and then proceeds to display the same Error code F2.

I just wondered if anyone had any issues like this before and could assist in any way.

Thank you in anticipation.