Kenmore Ice Maker M1 SA8868 drips gallons of water into catch box?

Kenmore Ice Maker M1 SA8868 drips gallons of water into catch box?

I have a Kenmore Ice Maker M1 SA8868 in my freezer. It previously worked fine for years. I moved to a home without a water hookup, so I made ice "manually" with plastic trays. I just moved back to a home WITH a hookup, and now the ice maker won't form "cubes".