Question about Aqua Rite SWCG not generating

[elghinbc]

OK, so it does generate, but not much. Last year, the system would maintain its chlorine output nicely set at about 20%. Now, I can get a pool test strip to show purple if I leave it on 100% and run the pool pump at high revs (much higher than the older one) but if I turn the generator down to about 30%, then my chlorine disappears. So, I played with my output dial on the control panel and watched my voltage. If the dial is set to between 5 and 55%, then my voltage is about 31, which is in the range for "not generating". If I set the dial at over 55% or to superchlor, then the voltage suddenly goes down to the 21 range, then after about 5 minutes drifts back up to about 25.6. So, my generator is only kind of generating when it is on "superchlor" or set on high. Given that this is a new cell, I am assuming that the circuit board itself is in the process of dying? Anyone run into this problem before? Or could it be just the control dial and not the mother board itself (they are separate items)? It seems unlikely it would be a defective brand new cell doing the same thing as my old one?

Thx

Ed