I had the same problem with my Hotpoint FDW60 and read all the online reviews about how baddly made the FDW60 is and after taking it apart I totally agree.
As the warning lights were indicating a faulty heating element I checked it to find that it was not working. I bought a replacement for £43 at my local electrical store (I think they then ordered it online). Taking the bottom off is easy but once off, it is very difficult to actually get to the element, but it can be done. I had to buy new hose clips to fasten the rubber pipe each side too. It has been on twice today and so far so good.
I have read some message boards and have seen that some people have had to replace the element a number of times, so I will wait and see what happens.
Be aware the heating element is not your usual heating element, it looks more like a insulated metal tube: http://www.buyspares.co.uk/cgi-bin/search.pl?query=heating+element+fdw60
Good luck
Rob
Rob Sloan, February 2009