The user guide only lists three 'error codes' 1 flash/beep for 'water not filling', two for 'water not draining' and four for 'Door open'. What actually happens when turning the selector to *any* program number is that it emits 5 flash/beeps after a few seconds delay before getting into its stride of repeating an 8 flash/beep cycle 'fault code'.
My 35 year old son checked out the pump and removed a small piece of plastic (looked like part of a clothes hanging clip) but, as I expected, it made no difference whatsoever (the impeller rotates freely enough). Now said offspring is behaving just like a "Millenial" in offering to buy a new machine rather than await any further advice I might receive in response to this posting.
Unless the drum is a direct drive design (a proper servicing manual would have answered this - I guess I'm going to have to divorce it from the tumble drier to discover this by inspection), it feels like the drive belt may have snapped or slipped off the pulleys since I can't feel the expected amount of resistance when turning the washer drum manually. Even so, I'd have expected to hear the motor spin up briefly before the controller could sense such a problem and stop with a "Secret Fault Code" known only to Tricity Bendix accredited service engineers.
I'm posting here in the hope that one or more of this group's contributors is/are able to shed some light on the problem. I'd prefer to repair if practical rather than just do "The Millenial Thang" and simply replace without regarding the possibility of a cheap and relatively simple repair.
 As near as the XYL and I can figure it. It was a gift from her now estranged eldest son around 2000/2001 when he moved into a house which already had a fitted WM just a year or so after buying the AW 1400 W brand new (possibly a staff discount purchase at Curry's). This is the very first time that we've had any problem at all with the machine which replaced a still functioning 20 year old Service Quartz that I'd been able to maintain for very little expenditure (two drum bearing kits) by using a drum/spin motor I'd removed from a scrapped Bendix and suitable modification of the controller board to compensate for the different tacho pulse/rev calibration of the donor motor.
 This happened after the XYL had started a wash cycle which had seemingly failed to spin dry the load. Her attempt to run the machine on the spin cycle resulted in the currently described symptoms.
 This epithet is applied in the normal sense that even an armchair DIY enthusiast would understand. Sadly, my youngest does not have the excuse of age for this attitude. TBH, I think the offer to 'go online and buy a new machine' may be motivated by a sense of guilt, perceived from his mum's complaints over his overenthusiastic use of the washing machine and (in particular) the tumble drier during the past three months or so since he's been 'in between jobs' and staying at "The Hotel of Mum and Dad" full time rather than just at the weekends.
He's just started a new job somewhere near Birmingham just this week. Unfortunately, he's commuting rather than staying at a cheap hotel in the week so it won't make any difference to us other than the fact that now he's "earning again", he's likely to be more inclined to make a contribution to our housekeeping expenses.
Johnny B Good
Johnny B Good