Autopilot-question about chlorine production just keeps going up

sueasinsue

Well-known member
Aug 3, 2016
52
syracuse NY
Hi-I have an autopilot Aquacal Digital nano it is five years old, when I opened my pool the FC was zero, I ran the digital nano at 50% (purifier) for chlorine production. 24 hours later I see that it bumped up to 67%, I know the digital nano is supposed to increase chlorine production if it senses low chlorine (it says something like that in the owners manual) I did a water test 48 hours after turning it on and the FC was 5, so I lowered the purifier to 20%. I have been having a hard time regulating it to keep the FC between 2.5-3.5? The FC just keeps climbing then I have to unplug the salt cell and let the FC fall. Could this be a bad cell? Is it just getting old? I started having this issue last summer...
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
21,269
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60