AO Smith Regeneration Not Initiating

Softener does not regenerate at the programmed time (e.g., 2 AM) and appears to skip cycles.

Advertisements

Possible Causes

Incorrect time of day, Power interruptions without backup, Meter not registering flow, Control board programming error

How to Fix / Troubleshooting

Safety first: Unplug the unit before removing the control cover.

Check clock and settings:

  • Verify the current time of day on the display and correct it if necessary.
  • Confirm the regeneration time (e.g., 2:00 AM) and regeneration mode (metered vs. time clock).

Verify meter operation:

  • Run water at a faucet and confirm that the display shows flow or counts down remaining capacity.
  • If no flow is shown, inspect and clean the turbine/flow sensor.

Power reliability:

  • If frequent power outages occur and the control has no battery backup, the clock may reset. Consider using an uninterruptible power supply (UPS) or ensure the clock is reset after outages.

If settings and meter are correct but regeneration still does not start, the control board may be faulty and require replacement.

Advertisements

Repair Difficulty

Easy 2/5

Required Part

Electronic Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements