Bosch no spin problem

I’ve not come across this problem before but this machine (WFE2021GB/01) fills, washes, heats and drains but will not spin? 😕

Initially I went straight for the brushes and changed them. The old brushes were well worn down but still making good contact. Motors megger’s up just fine. Pressure switch seems to operate OK, no sludge in system either. The heater meggers good too. Motor works with no problems and physical state of module looks just fine too…..

Specific symptoms: Set to spin only, pump runs for 1 minute and timer counts down OK. Then (presumably at the point when the distribution sequence should begin prior to spin) everything stops but the countdown timer, which continues to count down for a further 10 minutes until the end, nothing happens in the meanwhile. Door interlock locked all the while of course until the end.

My only thought is the main module (263909) is duff? The BIG PROBLEM there though is that they are £250……….!!!! 😯 Not something I’m willing to take a punt on right now, unless that is you guys can confirm, or suggest something I’ve overlooked?????