I took some water in this morning. Here's what they tested:
Chlorine = 0.5
pH = 7.8
TA = 180
Calcium = 150
CYA = 50
Salt = 3600

The instant salt display on the SWG read 3000-3100.

They tested the salt with both an instrument (digital) and a strip--and they were both 3500-3600.

I ran the pool almost all day with it set to 100%, and added the other 1/2 gallon of acid. Tested the pool this evening myself, and the chlorine and acid levels are in the ideal range.

I'm not sure what I should do about the salt reading being off. At least it appears to be generating chlorine now--but if it reads so innacurate that it shuts itself off when it shouldn't--any recommendations?

I guess I should call the mfg on Monday?