Lately my display on my unit indocates the cell is off and there is no flow. If I turn up the speed on the Ecostar is will show flow. However, all last year it worked at this RPM. I even turned it up to 1300RPM and after a while it will say the same thing.
So I am going to beleive it is the flow switch. Can these switches be cleaned? Is there any way to test to determine if its the switch or the board? I have not removed the switch nor touched it in any way. Additionally the cell is 3 years old, and I have never cleaned the the cell (T15 model)