Control displays “Err 03” and regeneration stops mid-cycle.

Safety first: Unplug the softener and place it in bypass before opening any brine or valve components. Wear gloves when handling salty brine water.

Steps to correct:

• 1. Check brine level: Remove the brine tank cover. During brine draw, the brine level should slowly drop. If it does not move, there is a draw problem.
• 2. Inspect brine line: Follow the brine line from the brine tank to the control valve. Ensure it is not kinked, pinched, or leaking. Tighten compression fittings and replace cracked tubing.
• 3. Clean venturi/eductor: On EcoWater valves, remove the venturi/eductor assembly (usually under a cap on the valve body). Disassemble carefully and soak parts in warm water with a small amount of vinegar to dissolve iron and scale. Use a soft brush or toothpick to clear small orifices—do not enlarge them.
• 4. Check brine valve and float: Remove the brine well cover inside the brine tank. Inspect the safety float assembly for salt crust or debris. Ensure the float moves freely up and down. Clean or replace the EcoWater brine valve/float assembly if it sticks.
• 5. Reassemble and test: Reinstall the venturi and brine line. Take the unit out of bypass, plug it in, and start a manual regeneration. Watch the brine level during the brine draw stage to confirm it drops steadily.

If Err 03 persists after cleaning and verifying the brine system, the control valve may have internal seal or piston issues and should be serviced by an EcoWater technician.