Need to know what F7 fault is on an AEG Lavamat 6555 sensorlogic washing machine
F7 is a heating fault.
The heater, wiring, thermostat, pressure switch and the control can all be involved.
Check the heater first, see if it's open circuit.
Check the wiring, and then the pressure switch.
See what you find and get back to me if you need more help.
Hope this helps