Display shows E07 and regeneration is interrupted during brine draw

Safety: Disconnect power and close inlet valve. Wear gloves when handling brine.

• Check brine level: Ensure there is sufficient water in the brine tank to cover the end of the brine suction tube.
• Inspect brine hose: Look for kinks, cracks, or loose connections between the valve head and the brine tank. Tighten hose clamps and replace brittle hoses.
• Clean injector: Remove the injector (venturi nozzle) from the valve head. Soak it in warm water and gently clean the small orifices with a soft brush. Do not enlarge the holes.
• Clean brine filter: If a small filter is installed at the end of the brine suction tube, remove and rinse it thoroughly to remove salt sludge.
• Test suction: Reassemble, open inlet valve, restore power, and start a manual regeneration. During brine draw, check that the brine level in the tank is slowly falling. If not, the brine valve or injector assembly may need replacement.