I agree, but it is the second unit in three months so it is doubtful that the unit is malfunctioning. More likely it is hooked up wrong.
It is plumbed in the line right after the heater with the flow arrow pointing away from the heater. Water comes into the drains/skimmer - through pump - through filter - through heater - through SWG - into pool, right?
One other interesting yet probably irrelevant point... the return line that runs to the diving board/waterfall is plumbed between the heater and SWG so that water never goes through the SWG, just straight into the pool. That line is turned off 99% of the time and the SWG readouts appear the same whether that line is on or off.
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