I narrowed my "no flow" error message on my AquaRite display to a bad flow switch. So I ordered a new one which will arrive in about five days. In the meantime, I followed the instructions from another post on how to take a regular phone cable to fool the system into thinking there is a working flow switch... Just so I can get some chlorine generated until the actual flow switch arrives. I'm aware of the dangers regarding hydrogen build up if the flow ceases for some reason, but there is very very slim chance of that happening. I'm just glad the problem wasn't the cell!!