E07 displayed and water remains hard even after regeneration

Safety first: Shut off water and relieve pressure before removing any meter components.

• 1. Check meter cable: Locate the flow meter on the outlet side of the Rayne control valve. Ensure the sensor cable is firmly connected to the control board and not damaged.
• 2. Inspect for debris: Remove the meter housing cap (if accessible) and gently pull out the turbine or paddle wheel. Rinse under water to remove sand or scale. Ensure it spins freely.
• 3. Verify programming: In the control settings, confirm the correct meter type or size is selected for your Rayne model. Incorrect settings can cause miscounted gallons.
• 4. Test flow indication: With the unit powered and in service, run water at a faucet and check if the display shows flow or counts down remaining capacity. If not, the meter or sensor is likely defective.

When to call a technician: If cleaning and cable checks do not restore operation, the flow meter assembly or control board input may need replacement.