E03 displayed and the softener is stuck in regeneration or will not advance through cycles

Safety first: Isolate power to the softener. Place the unit in bypass to avoid unexpected water flow while working on the valve head.

• Listen for motor operation: With the cover on, restore power briefly and initiate a manual regeneration. If you do not hear the motor running or feel vibration at the valve head, the motor may be faulty.
• Remove control cover: Disconnect power again. Remove the front/top cover of the Aqua Dial control valve to expose the motor and gear train.
• Inspect gears and cam: Look for broken teeth, loose screws, or anything jamming the cam/rotor. Remove any debris and ensure the cam can rotate by hand (do not force it; it should move smoothly with moderate pressure).
• Check motor connections: Verify the motor wiring plug is fully seated on the control board and that there are no burnt or damaged wires.
• Replace motor if needed: If the motor does not run when powered and wiring is intact, replace the Aqua Dial drive motor assembly according to the service manual.
• Reassemble and test: Refit the cover, restore water and power, then run a full regeneration to confirm the valve advances through all stages.