Display shows ERR7 and unit regenerates at incorrect times or not at all

Safety: Unplug the unit before removing the control panel.

Steps:

• Verify settings: Confirm the current time, hardness, and regeneration schedule are set correctly. Adjust as needed and observe if ERR7 returns.
• Check for frequent power loss: If the outlet is controlled by a wall switch or power strip, move the softener to an unswitched, dedicated outlet.
• Inspect control board: Remove the control cover and inspect the board for moisture, salt corrosion, or burn marks. Ensure all connectors are fully seated.
• Test timekeeping: Set the time and check after several hours. If the clock drifts significantly or resets, the internal clock circuit is failing.

Resolution: Replace the electronic control board if ERR7 persists and the clock cannot maintain accurate time despite stable power.