Hello all! I am new to this site and am having trouble with my SWG. When I turn it on, within minutes it starts beeping reading code "90" "low flow". I have checked pretty much everything I know to check that would cause low flow, but I have not found anything wrong. The pressure and flow back into the pool seems to be pretty strong, but it's almost as if this error is keeping the SWG from actually making chlorine. Is this possible? I need help!