does this w m/c have a demo mode.fitted new inlet valve lately but could not test due to frozen water pipes.after thaw m/c completed one wash.then it would only go into a slow spin and then ramp up to fast spin.then stops and does it all again.no program can be selected.spent a while holding down different combinations of buttons and eventually it began a wash program.dont know what buttons worked so was hoping someone might let me know procedure.paul