Hotpoint Aqurious code F-05?

Hi,
Need some advice please? An F-05 code was flashing on the display so I looked up what the issue may be, there were 2 options.

1 the pressure switch was faulty, so I have checked that as instructed, gently blowing to see if it clicks.

2 Check for any blockages in the drainage pump, there is defiantly not as I made a bit of a mess (lesson learnt).
This seems ok.

But we are still getting F-05 code and the water does not run away.

Is there else I could check or could the pump need replacing?

Any help appreciated.