Hi. I managed to open it up and replacing the bearings and a re grease seemed to fix the problem. I only get the W error sometimes if I pedal the bike before turning it on. This is cured by turning the motor off and rotating the crank a full turn then switching on again.
Mine has the dreaded e10 fault and although I’d like to see if I can fix it I’d also be interested in getting a new motor or reconditioned one if anyone knows of any. Or point me in the direction of the best way to source one in the current climate. Cheers