I'm having trouble getting my chlorine generator working right. It's a Circupool RJ20, about a year and a half old. The "Add Salt/Water Fault" light turned on, so I cleaned up the metal plates and started adding salt to the pool. The light stayed on. I bought a TDS meter, and it's reading at 5500ppm. Should I call up CircuPool and ask about the warrenty? I think at this point, I'd have to pay 20% of the original cost to get it replaced.