Certikin Partially Blocked Impeller or Suction Line

Pump has reduced flow and filter pressure is lower than normal despite clean filter.

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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

Debris in impeller vanes, partially blocked Certikin skimmer line, collapsed flexible suction hose, obstructed non‑return valve

How to Fix / Troubleshooting

Safety: Isolate power and close valves before disassembling pipework.

  • Clean basket and skimmers: Empty the pump strainer basket and Certikin skimmer baskets. Remove any large debris.
  • Inspect impeller: Remove the pump lid and basket, then access the impeller by removing the motor from the wet end. Clean out any hair, leaves, or plastic wrapped around the impeller.
  • Check suction line: Backflush the suction line from the pump towards the pool using a hose to dislodge blockages.
  • Inspect non‑return valve: If fitted on the suction, open and check that the flap moves freely and is not obstructed.
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Repair Difficulty

Medium 3/5

Required Part

Certikin pump impeller
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