Water remains hard even after recent regeneration (no error code displayed)

Safety: No electrical work is required for basic checks. Use bypass to isolate the unit if needed.

• 1. Test hardness: Use a hardness test kit on water before and after the RainSoft softener. If both are similar, the softener is not exchanging ions effectively.
• 2. Check salt level: Ensure the brine tank has adequate salt and that there is water at the bottom to form brine.
• 3. Verify settings: Confirm the hardness and capacity settings match your actual water hardness and tank size.
• 4. Clean resin (if iron present): If you have iron in your water, perform an iron-cleaning regeneration using a resin cleaner approved by RainSoft. Follow product instructions carefully.
• 5. Replace resin: If the resin is more than 10–15 years old, appears mushy, or floats excessively, it may be exhausted and should be replaced with RainSoft-compatible cation resin.

When to call: Resin replacement involves depressurizing, disconnecting plumbing, and handling heavy tanks. If uncomfortable, hire a professional.