AO Smith
Control Interface or Drive Logic Fault
AO Smith variable-speed pool pump does not respond to speed changes from the keypad; stays at one speed.
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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
Stuck or failed keypad buttons, Firmware glitch, Faulty control board speed driver, External automation overriding local control
How to Fix / Troubleshooting
Safety First: Turn OFF power before removing control covers.
- Check control mode: Ensure the pump is not locked into external control mode. Switch to local/manual mode per the AO Smith manual.
- Test keypad: Press each button and observe for tactile feedback. If some buttons feel stuck or do not register, the keypad may need replacement.
- Power cycle: Turn OFF the breaker for several minutes, then restore power to reset the control logic.
- Update or reset firmware: If supported, perform a factory reset or firmware update according to AO Smith instructions.
- Replace keypad or control board: If the pump still ignores speed commands, replace the keypad first, then the control board if necessary.
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Repair Difficulty
Medium
3/5
Required Part
Keypad / User Interface
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