Franklin Electric Worn Impeller / Diffuser or Internal Bypass

Pump runs but pressure is much lower than normal and pool circulation is poor

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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

Eroded impeller vanes in Franklin Electric pump, Cracked diffuser, Debris lodged in diffuser bypass, Partially closed valves

How to Fix / Troubleshooting

Safety first: Turn off power and relieve pressure before opening the filter or pump.

  • Check valves and filter: Ensure all valves are open and the filter is clean.
  • Inspect impeller and diffuser: Disassemble the pump wet end and examine the impeller for worn or broken vanes and the diffuser for cracks or missing pieces.
  • Replace worn parts: Install a new Franklin Electric impeller and/or diffuser if damage is found.
  • Reassemble and test: Rebuild the pump and verify that pressure and flow return to normal.
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Repair Difficulty

Medium 3/5

Required Part

Impeller
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