E12 displayed, high salt usage and frequent regenerations

Safety: No internal high-voltage work is required for basic checks.

• 1. Verify water hardness: Test raw water hardness with a reliable test kit or lab report. Compare to the hardness programmed in the RainSoft controller.
• 2. Correct programming: Enter installer mode and ensure the resin tank size, salt dosage, and capacity are set according to the RainSoft specification label on the unit.
• 3. Check meter accuracy: Run a known volume of water (e.g., 10 gallons) through the system and compare the meter reading. If it reads significantly higher, the meter may be faulty.
• 4. Inspect for leaks: Check toilets, faucets, and outdoor spigots for continuous leaks that could cause excessive water use and frequent regenerations.

Next step: If programming and plumbing are correct but E12 persists, replace the flow meter assembly or consult RainSoft for firmware updates.