I am not sure we have proved anything, as the flow light was also green...
What we were trying to prove is that with a "false" red flow light, that the "Cell" light was on... indicating the cell was making chlorine.
Yes I agree, about all i probably proved is...If the flow light is Green The cell is probably generating chlorine.
For what ever reason it seems to be working fine for that last several hours.
It has been showing low flow "most" of the time for the last week at least.