Softener appears to be stuck in regeneration, with continuous noise and water to drain for hours.

Safety first: Immediately place the softener in bypass to stop water waste and potential drain overflow. Disconnect power on electronic models.

• Observe valve position: Note the position of the control disc or cam when stuck. This can help identify which stage is failing.
• Check for obstructions: Remove the control head cover and inspect for foreign objects or broken parts in the gear train.
• Test motor/drive: On electronic models, briefly restore power and see if the motor attempts to move. If not, the motor or PCB may be faulty.
• Manual advance: If the design allows, manually advance the disc to the service position to restore normal water service.
• Replace faulty components: Worn gears, pawls, or motors typically require replacement of the affected assembly.

Warning: Do not leave the unit running to drain; this can cause flooding and high water bills.