Sounds like timer fault. We stock at £34.90+vat Go to :
http://www.emwelec.co.uk/index.php?action=item&id=97&prevaction=category&previd=1&prevstart=0
have a look at the photo - it should be your timer. You can send it back if it doesn't sort the problem ! see our terms at www.emwelec.co.uk
EMW
March 2009