Just replaced my T-15 chlorinator cell. Had some problems getting it to work but after re-soldering the back of the K-1, the chlorinator appears to be working fine. But I still have another problem. When I turn on the filter pump, it runs for about 15-20 minutes then shuts down and I get a "No Flow Filter Pump" message. If I try to turn it back on it immediately comes on, then 15-20 minutes later shuts down again with the same message. Got the same message for the first time about a week ago along with "Low Volts," which is why I replaced the cell. It seems I've fixed one problem but not the other. Last week when I first got the two messages I backflushed hoping that would help, but it did not. Water pressure appears normal. Not sure what to do next. Any suggestions? Thanks.