swg aqualogic

AquaLogic board. Don't know where to get s/n. Salt cell is knock off, 2 years old (Circupool W3T-CELL-15). CircuPool® CIR-GEN15 Aftermarket Replacement Cell compatible with Hayward® AquaRite® Getting "Check System Very Low Salt" error. Reads 2300 today but was readying "very low salt" over the...