Onga
Under-Sized or Worn Impeller / Incorrect Speed Setting
Pump runs but water appears cloudy and circulation seems poor despite normal pressure.
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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
Worn impeller vanes, incorrect impeller fitted, variable-speed pump set too low, partially blocked return lines
How to Fix / Troubleshooting
Safety: Turn off power before opening the pump or filter.
- Check speed setting: On Onga variable-speed pumps, increase the RPM or select a higher flow program for filtration.
- Inspect impeller: Remove the wet end and examine the impeller for erosion or wear. Replace if vanes are thinned or damaged.
- Verify part numbers: Ensure the impeller installed matches the Onga model and horsepower rating.
- Check return lines: Inspect eyeball fittings and valves for partial blockages that could reduce circulation.
After adjustments, run the pump and monitor water clarity over several days. Persistent issues may relate to filtration rather than the pump.
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Repair Difficulty
Medium
3/5
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