OK no reply so I went and bought the side flow chamber. The parts guy said he has never yet had to order a solenoid but usually orders side flow chambers ten at a time. So unlikely to be a solenoid problem. Remove front lower(4 screws) panel, two screws from right lower back panel and one screw from left hand side panel, put panel to one side the pull off lectrical connection to counter on bottom right corner of flow chamber . Rotate anticlockwise (I used the open jaws of a water pump pliers inserted into two of the segments of the grid) and remove the little circular plastic grid/retainer around water inlet on left inside panel of machine, this releases the round hole in upper part of flow chamber, now pull up three little spouts on lower end of chamber and recover the three rubber o rings. Fit o rings to spouts on new unit push down the spouts in place and while an accomplice pushes the upper part of new chamber against outer side opening of water inlet, replace circular plastic fitting on inside of water intake inside machine and twist clockwise to lock in place. Then remove blue plastic bit from push-on electric connection and insert white plastic connector to new blue plastic holder on new chamber et Voila it works.