Everything regarding the SWG is working in theory, i.e., meter at 100%, bubbles being produced, salt over 4000ppm, but zero chlorine in pool. I removed the cell today and filled a bucket from the pool which I placed the cell into it and connected the terminals and turned it on. (I had put an old cell into the SWG housing while doing this) I let it run for a minute or two and the water turned cloudy. I then drop tested the water in the bucket and the sample turned beyond yellow to orange, ie., chlorine production off the scale! I reinstalled the cell unit to its inline plastic casing and again took poolwater samples at each of the entry points into the pool and sure enough - zero chlorine as before!
If the SWG was pumping water through an underground leak my water level would have gone down as I have had the autofill turned off for a week or so. I had previously loosened the endcap of the SWG and sampled the water leaking which showed no signs of Cl. I was unable to test it at the other end of the plastic housing as the cap was either molded or cemented on. However if somehow there was a blockage in the lines and the water was circulated by- passing the poo,l then surely I would have found some trace of chlorine when I tested it at the leaking endcap? This is driving me crazy as there does not seem any logic to it. I really would appreciate any ideas as to what may be going on.