That's just a heating element warning and the cause of most of your other problems too. The part isn't too pricey £18 or so. But you will have to take the whole front case off the machine to get to it.
ie Outer door unclip, hinge unscrew, top cover unscrew and slide off, unscrew top 3 screws and 2 screws holding display on, disconnect cables and pipe and remove. Remove powder tray and slide whole front upwards and off. Disconnect cables, remove white cover ,just below tub door, note wire order and remove wires from element, unscrew bolt in middle and pull out element. Reverse procedure with new element. Can be done in 30 mins once you get used to it :-)