I am having the same basic Aqua Logic clock not keeping time that has been mentioned several times on forum. Time fluctuates wildly, not even close, so it throws filter schedule off. I have seen several other threads on this but never saw a solution other than replace board or a mythical 9v battery should be replaced, which mine definitely doesn't have. My chemicals stay in balance and pumps all work just not at correct time, so I hate to pay for a new board but I am getting tired of resetting the clock twice a day. Any ideas?