I have an Aquapure 1400 on my 30,000 gal pebble-tec pool. Recently, I've been having some "low flow" issues. I've been through many of the threads and posts and wanted some additional input please. I've done a lot of troubleshooting and am almost at my wits end.
Recently, when the problem started, I tried cleaning my sensor and cleaned the DE tank and grids. That didn't help. My system was also showing high salt (confirmed by Taylor test kit) so I emptied some water and over the last week have slowly brought it up to 2800 so far. Also recharged conditioner and cell-saver agent. I'm aiming for 3000. I also purchased and installed a new sensor (new type with the little box in line) which is installed into the 3rd port of the cell. The cell was new one year ago and has been cleaned out.
All started up fine, showed flow with no problem. Now, a week has gone by, and yesterday I came home to "no flow." No other error codes. I turned the system off and on and it worked, flow showed up. Came home today, again to "no flow." Turned off, back on, and now showing flow.
I'm not sure what else to do to troubleshoot this. My pool flow seems good - there's a waterfall and pool sweep that are both chugging away. I have a 1 1/2 hp motor that has always done fine - I can't imaging I need more flow than that provides to show up.
Please offer ideas and suggestions.
Additional info: I opened the Aquapure and did the voltage testing troubleshooting per the manual. All tests on the front and back boards showed normal. I can't believe it's another faulty sensor - that would be too coincidental. What else could be causing this?