OK, thanks for that.
ED4 indicates a fault with the dryer pcb, wiring or main pcb (control board).
In many cases a fault with the dryer heater element can cause this.
Unplug the appliance and take the top off.
On top of the tub is the heater assembly.
At the rear of it are the connections to the element.
Label these wires according to the connection they go onto.
Push the drum down and forward.
Pull the wires off of the heater element.
Insulate the wires and tape them back into the wiring loom out of the way.
Refit the top and try the machine again (not on dryer as this won't work).
If the washing machine side starts working then replacing the dryer heater element may well cure the fault.
Check it out, see what happens.
Hope this helps
Let me know how it goes or if you need more help