You have a blockage in your condensing chamber, causing water to go inside ur dryer and get onto ur thermostats..switch ur appliance off, at the rear of ur dryer u will see a grey tub (condenser chamber), prise this off with a flat screwdriver and u will see a build up of water, at the left bottom corner u shud see a transfer hole which should be clear...now go to the front remove ur condenser, put ur hand inside right to the back...remove any build up of fluff...it will be wet...now leave ur dryer for at least 24 hours, to allow any water that has got onto ur thermostats/heater to dry...sorted...
Billybo, December 2009