What is error 20 on Hotpoint Aquarius Ultra Plus 7885 dishwasher?

Dishwasher appears to starts program but does not fill. Error 20 comes onto display after a few seconds. What does this error mean?
Nigel Watkinson, June 2004


done
i had same problem with my hotpoint dishwasher.
i found out that ERROR 20 is a temp problem, and when i told my repair engineer, he changed a temp thermister which is stuck to the outside of the inside door skin and so far all o.k.
and all for £20.

M. Williams, June 2004
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