AO Smith
Manual Regeneration Control Failure
Softener will not start a manual regeneration when the button is pressed.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty keypad, Locked control (child lock), Control board input failure, Drive motor jammed
How to Fix / Troubleshooting
Safety first: Unplug the unit before removing the control panel.
Check user lockout:
- Some AO Smith models have a lock feature; consult the manual to unlock the keypad if a lock icon is displayed.
Test keypad:
- Press other buttons to see if the control responds.
- If only the regen button fails, the keypad membrane may be damaged.
Inspect drive system:
- If the control attempts to start regen but stops immediately, the drive motor or valve may be jammed; inspect gears and cam.
Replace the control panel / keypad assembly or the entire electronic control board if the keypad is unresponsive.
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Repair Difficulty
Medium
3/5
Required Part
Control Panel / Keypad Assembly
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