Like some of the other posts, I seem to be having a calibration issue, as well. I've a AQR15; installed new in 2015. The initial reading is at 2200. When I push the Diagnostic button 5 times it reads -3200. So I do the recalibration exercise & the initial reading then matches the recalibration reading. It stays that way for about 24 hours, and then the initial reading drops back to 2200.
The T-15 cell was just washed & cleaned. The pool water chemistry is within the boundaries, as measured by the TF100 kit. Does this issue indicate it's time to change out the T-15 cell, or is there another matter I should pay attention to?
Thanks very much.
The T-15 cell was just washed & cleaned. The pool water chemistry is within the boundaries, as measured by the TF100 kit. Does this issue indicate it's time to change out the T-15 cell, or is there another matter I should pay attention to?
Thanks very much.