We recently noticed our original cell of 3 yrs was not keeping up on the chlorine levels for our 17,000 gal above ground pool. I purchased a replacement and installed it a few days ago, but I am not seeing any chlorine levels on the test strips. I've even had it set to super chlorinate for the past 24 hrs and still nothing. The control box says that it is generating and there are no warning lights. I've pushed the cell plug to make sure it was connected securely, but I don't know what else to check. Is there anything else that could be causing this?