Yesterday afternoon I manually turned on the SWG for a couple hours at the end of the day when it is usually off to get a little more chlorine in the pool. The pump goes off automatically at 7 PM and I didn't get out there to turn the SWG off untill around 11 PM. When I got out there I saw the light was on indicating it was still actively generating chlorine when the pump had been off for like 4 hours. Anyone know what the reason it wouldn't turn off is? Flow sensor is bad? Do you think this did any damage to the cell generating chlorine for that long with no flow? Thanks!