AO Smith
Regeneration Not Initiating
Softener does not regenerate at the programmed time (e.g., 2 AM) and appears to skip cycles.
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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.
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Repair Difficulty
Easy
2/5
Required Part
Electronic Control Board
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