My Jandy is just over 4 years old and I'm getting a 'No Flow' error. I can see water flowing through the cell which is perfectly clean and without buildup or corrosion; all the plates are in-tact. When it's reset it generates chlorine for a day until the No Flow error returns. All filters, baskets, etc are clean and salt level is within range. I checked the connections on all the leads. I was told by a pool repairman that the flow sensor is integrated in this model Jandy and I'd have to replace the whole cell, but I hate to go to that expense because all signs point to only a bad flow sensor...or so it seems to me with my limited knowledge