Staff Answer
Aug 04, 2026 - 11:39 AM
Yes. Beginning in 2016, Si-Series models became Universal-Series models. If you have a "check cell" and/or "check salt" LED warning light on solidly (the screen will display SLO), and you have ensured the cell is fully clean, you've tested the water to confirm its salinity, the controller is on the right cell type, and you have proper water flow, then if the cell is also years old it is likely that it needs replacement.
The CircuPool Si-25/Si-30/Si30+system would use the CircuPool Universal25 Replacement Cell.
The CircuPool Si-40/Si-45/Si60+ system would use the CircuPool Universal40 Replacement Cell.
The CircuPool Si-60/Si60+ system would use the CircuPool Universal55 Replacement Cell.
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