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

Check power source: Ensure the softener is plugged into an unswitched outlet that remains powered at all times.
Replace backup battery: Install a new Watersoft-specified backup battery on the control board if present.
Test adapter: Replace the power adapter if it intermittently drops voltage.
Board replacement: If settings are still lost despite a good battery and power, the control board’s memory circuit may be failing and require replacement.

Softener frequently loses time and settings after power interruptions

Possible Causes