I have a new intellichlor 40 installed this year on my 18000 gal vinyl IG pool.
My concern is that today when I checked the FC it was at 0.5 ppm.
The rest of my numbers are good - Ph 7.6, CYA 60.
All the lights on the unit are green and I was running it at 80%.
My pump is running for 9 hours (9am - 6pm) during the day at about 2200 rpm. I am in North Carolina, so it has been quite warm and sunny. We've also had a few big rain storms.
I am a bit surprised that the IC unit can't keep the chlorine level in the pool up. 6 days ago the FC was at 5. So basically I've lost nearly 1 ppm per day - this seems like the IC unit isn't really doing much.
As a test, I set it at 100% and am running the pool pump all night to see what it shows in the morning, but I wondered what sort of settings others were using (i.e IC output/pump run time etc).