Display shows “Err 09” and the softener does not respond to button presses.

Safety first: Unplug the unit before opening the control panel.

Steps to correct:

• 1. Inspect keypad surface: Check for cracks, warping, or signs of water or salt residue on the keypad. If the panel is swollen or delaminated, it likely needs replacement.
• 2. Reseat ribbon cable: Remove the front panel and locate the flat ribbon cable connecting the keypad/display to the main board. Gently unplug and reinsert it, ensuring it is fully seated and straight.
• 3. Dry moisture: If condensation or a minor leak has dampened the panel, allow it to dry completely. Correct any source of leaks (e.g., loose plumbing above the unit).
• 4. Test button response: Plug the unit back in and test each button. If some or all buttons remain unresponsive, replace the EcoWater keypad/display assembly.