The rinse for this unit is timed, so low water pressure situations will give you problems. Also, the rinse level is designed to be much lower then the wash level, It is a water saving design. If you have the rinse options like "power rinse" or "softener added", that needs to be selected. You will get a better rinse. But, your rinse level is going to be lower then wash level and that is normal operation for this unit. If you have the diagram it is contact R16 on timer, "Pressure switch bypass". Salesmen always leave this bit out when selling the unit, lol.