I have Hayward goldline controls with a T cell 40 SWG and a upgraded intelliflo VS 3050 pump. I had the cell tested and it tests good. The controls are active at the set times and Voltage is around 26V. All water parameters test good with exception to chlorine. This problem seem to start after I upgraded from a single speed pump (1.5 HP @ 3450 RPM) to the Intelliflo. My pool is 25000 gal and I'm running the SWG 6 hours @ 65% which was fine with the old pump so I dont understand what would make a difference unless lower flow would cause a problem? I dont know where to look at this point? Ane experience with this would help.

Thanks