does anyone know if there is a minimum water presure requirement for a bosch SGS4012GB/01 as i have a customer with one which keeps stopping mid cycle.she has quite low water presure & i have tested it over & over in my workshop & works fine every time.i have never caught it actually stopping in the house,but i have’nt got the time to sit & watch it as it does’nt stop every time.any ideas !