Pump motor hums loudly but does not start spinning, then trips the breaker or overload.
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.
Possible Causes
How to Fix / Troubleshooting
Safety: Immediately switch off power if the motor hums without starting. Do not repeatedly reset breakers.
- Check for free rotation: With power OFF, remove the pump basket and try to spin the impeller or rear motor fan by hand. If jammed, clear debris or consider bearing replacement.
- Inspect capacitor: Open the capacitor housing on the Onga motor and look for bulging or leaking. Replace with the correct µF rating if faulty.
- Verify supply: Avoid using long, thin extension cords. Ensure the pump is on a dedicated circuit with correct voltage.
If the motor still only hums after capacitor replacement and mechanical checks, the windings are likely damaged and the motor should be replaced.
Repair Difficulty
Required Part
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