Been to look at one of these Whirlpool Heavy Duty (HD) WM1100 washers. It had F- DL in display, I took off door lock, greased up a bit, tightened all connections to boards, emptied filter which was blocked slightly.
Run & tested, seems to run ok now but door locks, starts to fill for a few seconds, door unlocks, locks again & continues.
Is this normal operation or is there likely to be a bad connection somewhere?
Any service/diagnosis info appreciated.