More than likely that the thermostat has gone open circuit on the heater. To get to the heater you have to remove the back panel inside the drum. There are allen bolts (approx 9)around the circumference of the rear panel and two in the centre and behind the rear panel. To get to these, turn the drum by hand until you can see the allen bolts. Undo them until the are free. They are captive so will not fall out. When all bolts are out then the rear panel will come away. You will see the plastic drum bearing on the back of the rear panel. It has a groove in it and has to line up with the post from where it came when putting back together. You can now see the element. It is fixed with two screws. Lift the heater out and on the top edge is the thermostat.Take off wires to stat before removal. To check if it is open circuit, put a continuity tester across the terminals. If there is no continuity, it is open circuit. If this is ok then look at the element filaments. Check for breaks. If there are then it will need an element. All these parts are only available from Miele. Stat is approx £15 and heater is around £80. Putting back together is a reversal of taking apart but screw the drum bearing back first. You will not be able to fix it if you put surrounding bolts first.
Ex Miele engineer, November 2009
