Display shows CHEM, LOW CHEM, or similar; integrated chemical management system indicates an issue.

Safety first: Wear gloves and eye protection when handling spa chemicals or salt cells.

• Test water: Use a reliable test kit to check sanitizer, pH, and alkalinity levels. Adjust manually as needed.
• Check cartridges: If using an Arctic Spas Spa Boy or Onzen system, inspect and replace any empty or expired chemical cartridges.
• Inspect salt cell: Turn off power, remove the salt cell, and check for scale buildup on the plates. Soak in a manufacturer-approved descaling solution if needed.
• Replace cell: If the CHEM error persists and the cell shows physical deterioration, replace the Arctic Spas salt cell.