E30's are pressure switch related.I have seen pressure hoses wear on the edge and become thin and cause this fault but you say they are OK.Have you tested the element resistance across terminals and to earth?.could be pressure switch issue or PCB issue.put the machine back in test mode as already described to you.each position clockwise performs a test on each component.try that and see what happens.if you have back off be careful on fast spin test etc
CK
June 2012