Hi , the unit is not meant to be covered as this will trip the overheat thermostat. Leave to cool , it should self reset.if not the thermalfuse has burnt out and will need replacing
OK , the thermal fuse inside will need replacing . Look inside and you will see a bridge like piece of metal thing with two wires leading into it.
Hi can you look for a model number too , it will have letters and numbers, thanks
Hi , there should be a label somewhere on the unit. Please make sure power is off befgoe removing cover . unfortunately as I cannot find the service manual for the appliance I cannot tell you exactly how to remove the cover except to remove all screws , some may be hidden under clip on panels ,