Dishwash is actually F & P soft touch. We moved into the house recently and wasn't left any manuals. It was 1/2 way through a cycle when F1 came up and it keeps beeping. I tried pressing every button to no avail. Checked to see if anything was stuck and fixed a couple of possibilities but it hasn't fixed the problem.
I had the F1 symbol come up too. Try cleaning out the interior and then drying it out completely using a hair dryer. This is what I did and it's working fine now.
You should be able to find a user manual here: http://www.fisherpaykel.co.uk/admin/pdfs/pdf_usecares/527974A_FP_DD_ugm_GBw.pdf. F1 is a flood warning. You might want to have a little poke around the bottom of the cabinet and see if there's anything that might have upset the flood switch. A.
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