The water levels on these machines could be changed, but I think that had to be done by a Miele service technician. They do indeed don't have a lot of programmes and options, but that is more often the case with commercial machines. Most Electrolux commercial machines have 4 programmes, so the 6 or 7 on these machines are quite a luxury!
Peter, the 6kg 19something models were indeed based on these series.