E09
Waterway
Overload / Excessive Current at Startup
Waterway variable‑speed pump displays E09 and shuts down when starting at high RPM.
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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, High system head pressure (closed valves, dirty filter), Incorrectly sized impeller installed, Motor winding degradation
How to Fix / Troubleshooting
Safety: Turn off power and relieve system pressure before opening any part of the plumbing.
- Check valves and filter: Ensure all suction and return valves are fully open. Backwash or clean the filter to reduce system pressure.
- Inspect pump basket and impeller: Remove the Waterway pump lid and basket. Check for debris at the suction port. If needed, remove the pump housing bolts and diffuser to access the impeller and clear any obstructions.
- Verify impeller size: Compare the installed impeller part number to the pump model. An oversized impeller can overload the motor and should be replaced with the correct Waterway impeller.
- Start at lower RPM: Program the pump to ramp up from a lower speed instead of starting at maximum RPM. If E09 only occurs at very high speeds, the motor may be weakening and could require replacement.
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Repair Difficulty
Medium
3/5
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