Originally Posted by Pool Clown
WOW - THANK YOU, POOL CLOWN! You saved me a lot of anxiety, grief, and needless expense. My Aquapure sensor was less than one year old and it started reading "No Flow". I replaced the filter (it was time, anyway), cleaned the trap, scrubbed the sensor, inspected the salt cell, increased the RPMs, powered down & restarted the system, and just about every other troubleshooting trick I could find. Nothing. I was about to fork over another $200 for a new sensor when I came across this post. In just two minutes, I had opened the control panel, held down the button on the daughterboard, and got the flow light to come back on. I then went over to the water return in the pool and found highly chlorinated water coming in!
So THANK YOU for the quick and effective fix for this problem. Message to everyone else: If you have one of the newer Jandy Aquapure 1400 tri sensors (the one that comes with the daughterboard attached) and you're getting "No Flow" on the LCD and no "Flow" LED lit, this is probably the fix.