hi,the first three flashing led,s suggest a leak into the undertray,it can also be connected to a blocked filter.try pressing the program cycle button 4 times quickly ,all lights should go out,then lights 1 and 5 should appear flashing,.switch appliance off,then close door,.wait a few seconds and power machine on . if the appliance starts working it probably won't get through the cycle before it aborts showing same error code.iam assuming that the engineer had the appliance out ,had the back off to check for leaks ?.if he hadn't then I don't see how he could say the timer/pcb was at fault.you didn't mention in your discription any audiable beeps??usually in pulses of 10 .
mech monster, October 2011