DAB
Reduced Flow / Hydraulic Underperformance
Pump runs but flow is weak, pressure at the filter gauge is lower than normal
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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
Partially blocked impeller, Air leak on suction side, Worn impeller or diffuser, Low pool water level drawing air
How to Fix / Troubleshooting
Safety first: Turn off power before opening the pump or filter.
Steps to check:
- Clean baskets and filter: Empty skimmer and pump baskets. Backwash or clean the filter to ensure it is not restricting flow.
- Inspect for air: Look for air bubbles under the pump lid and at return jets. Fix suction leaks and ensure water level is adequate.
- Check impeller: Open the pump wet end and clean any debris from the impeller. Replace if vanes are worn or eroded.
- Inspect diffuser: Replace a worn or cracked diffuser to restore proper hydraulic performance.
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Repair Difficulty
Medium
3/5
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