I'm including all the info I have, my intellichem has had issues reading ORP correctly since the day it was installed, it ran ok for about 6 months then it started reading ORP incredibly low. I had a chlorine ppm of 15 and the reading was -10, I spent $215 and bought a ner ORP probe. After I installed the new probe(made by Accutrol) it was reading 395, but the manual chlorine test was still at 15 ppm. Because of this condition it is constantly running the intellichlor, I've tried resetting intellichrm to factory settings, auto calibration, self diagnostic, swapping probe wires, and still can't get an accurate reading.
Does anyone know what else I can try?!?
My pool info is as follows:
Pool is indoor 6k Gal.
Temp 94 degrees (it's a therapy pool) during the day 80 degrees overnight
Salt 3400 ppm
Chlorine (FC) is approx 15-20ppm
TA is 100
PH is 7.1 controlled with muratic acid
Cyanuric acid is less than 10
Calcium hardness is 300
It has a cartridge style filter(cleaned regularly)
Filter runs 24 hours
Pool is approx 18 months old
Indy info or help with this would be greatly appreciated
Thanks in advance