Autopliot SWG problem after refill

[PatL34]

I would add some more CYA to bring it up to 60 -80 ppm. You may have chloramines at this stage and the SWG is working its tail off trying to destroy these. If you smell chlorine near the pool, it means you are smelling the chloramines.

The extra CYA will help the Chlorine to inactive until it is needed.

Hope this helps.

Pat

[Poconos]

Just a shot in the dark since I never played with a SWCG but what if you took a sample right at a return jet at full power then another with it off and see if there is an FC difference ? I would think the Cl concentration at the jet would be high enough to see if the generator is at least working....but maybe not.
Al

[PatL34]

Bringing down the TA is a long drawn out process. (See the Sticky in Alkalinity and Calcium Hardness by Pool Doc)

I would continue adding chlorine to help the SWCG as much as possible, and carry on aerating with the pH down to 7.0 - 7.2. the pH will continue to creep upwards, because of your plaster pool and the TA, so it's PITA you have to endure until your pool chemistry settles down.

Poconos, it should be possible to check the DC amps on the DG-220 Controller, and if it is low, (<4 amps) I would check the cell for any scale build-up, and clean with 20% Muriatic acid.

Let us know how you make out.

Pat