E17 error and unit indicates low salt even when tank is adequately filled

Safety first: Unplug the softener before adjusting the sensor.

• Verify sensor mounting: Ensure the Lindsay salt sensor is mounted at the correct height and angle per the manual. If it has slipped down, it may always read low.
• Clean around sensor: Remove any mushy salt or sludge around the sensor. Rinse the sensor tip with clean water and dry.
• Reset alarm: Clear the low salt alarm in the menu and monitor. If it returns immediately, the sensor may be defective.
• Bypass sensor (temporary): Some models allow disabling the salt sensor in programming. This can be used temporarily until a replacement sensor is installed.