I have a Kenwood Dishwasher. Recently it has been leaving glassware with a cloudy film and the salt warning light was on. I have filled the salt reservoir up and used the machine only once or twice (can't recall) but the warning light is on again (not sure if it went off as didn't check). I have checked the salt reservoir and it is completely empty, respite being filled up only a few days ago with a full bag of salt. Do you know if this fault is worth repairing or should I just buy a new machine - this machine is only about 2 years old!