Hi,
Not sure I can help you fix it, but in case it helps, I have a copy of the installation manual
http://notes.minty.org/cgi-bin/wiki.pl?Indesit_WN_1063_WG_Users_Manual
I was looking for the user manual for this machine online and couldn't find it -- nor could I get it from Indesit or their support line/website.
But I eventually found my old copy, scanned it and uploaded it here:
In case it is of use to anyone else...