Today, I had a problem with the Jim Coleman Company Water Wizard. One of the automatics was down because someone bent the boom two days ago. So today I noticed that the holding tank was overflowing. I thought the float valve was stuck. Then I noticed that the ro water was runing into the tank (thanks to Greg).
Which it usually okay except when the unit is down. There was not an individual cut offs for each unit.
So I fixed it the professional way.