E2 displayed and unit will not advance through regeneration steps

Safety first: Unplug the softener or switch off the breaker before opening the control head.

• Listen for motor operation: Initiate a manual regeneration. If the display shows movement but you hear no motor noise, suspect the drive motor or wiring.
• Inspect cam and rotor: Remove the Lindsay control cover. Look for broken plastic gears, misaligned cam, or foreign objects binding the rotor. Manually rotate the cam shaft slightly with a screwdriver (do not force). It should move with moderate resistance.
• Check motor wiring: Verify the motor plug is fully seated on the control board and that wires are not pinched or corroded. Reseat connectors.
• Test motor (if comfortable): With power restored and extreme caution, start a regen and measure voltage at the motor leads (refer to Lindsay service manual for correct voltage). If voltage is present but the motor does not turn, the motor is defective.
• Replace motor if needed: Remove mounting screws, swap in a new Lindsay valve drive motor, align the motor pin with the cam, and reinstall. Reassemble the cover and test a full regeneration.

If the motor tests good but E2 persists, the control board may be faulty and should be evaluated by a professional.