I have a Whirlpool DU8500Xx-3 dishwasher that is approx 16 years old and has been very reliable all of these years (not a single repair! ). Recently, the dishwasher will not fill with water when we turn it on to clean dishes. Is anyone familiar with this problem and how to fix it? Also - depending on your answer - is it time for a new machine? Thank you for your time.