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What does a red LOW salt light and a flashing Green CELL light mean on an IntelliChlor?

The salt level in the pool is low and the IntelliChlor may need inspecting

Low salt. The water salt level has fallen below the ideal range. The IntelliChlor is still producing chlorine but may need further inspections.

NOTE: After every salt addition, pump should be allowed to run for at least 24 hours for proper dilution. Salinity readings should only be taken, after the dilution period.