The cell light does not come on. Pool service company replaced the flow sensor. Light came on for a few minutes, then went off. They suggested I get a new intelliflow. Chlorinator. I just installed it, the light came on for a few minutes and then went off. When I adjusted the chlorination level down from 100% to 75% the cell light came on again for a few minutes and then went off again. Any suggestions are very welcome. Thank you.