E12 error and regeneration occurs too frequently or not at all

Safety: No internal electrical work is required for programming, but avoid wet hands when touching the controller.

• Reset to factory defaults: Use the Idrobase installer menu to restore default parameters, then re-enter site-specific data (hardness, capacity, regeneration time).
• Set correct time: Ensure the current time and day are correctly set so scheduled regenerations occur at night.
• Check regeneration mode: Confirm whether the unit is set for metered (volume-based) or time-clock (day-based) regeneration as required. Adjust if necessary.
• Verify capacity and reserve: Enter the correct resin volume and hardness to calculate capacity. Set an appropriate reserve volume to prevent premature or delayed regenerations.
• Monitor operation: After adjustments, monitor water usage and regeneration frequency for several days. If E12 reappears, the control board may be faulty and require replacement.