Water remains hard at taps even though the Amfa4000 appears to run regenerations normally

Safety first: Turn off power before opening the control head. Water testing involves no electrical risk but use clean containers.

• 1. Confirm hardness: Use a hardness test kit on water before and after the Amfa4000. If both are similar, the softener is not exchanging properly.
• 2. Check bypass and plumbing: Ensure the bypass valve is in Service position and that no separate hard-water tee bypasses the Amfa4000 to your fixtures.
• 3. Inspect salt and brine: Open the brine tank and break any salt bridges. Ensure there is adequate salt and that water level is correct after a regeneration.
• 4. Verify settings: Confirm hardness, capacity, and regeneration time are correctly programmed for your usage and the Amfa4000 model.
• 5. Perform two manual regenerations: Run back-to-back regenerations to fully recharge the resin and retest hardness.

If hardness remains high after proper brining and settings, the resin is likely exhausted or fouled and should be replaced.