E11
DAB
Overpressure / High Discharge Pressure Protection
Pump runs briefly then stops with E11, especially at higher speeds
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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
Blocked or dirty pool filter causing high backpressure, Closed or partially closed return valves, Undersized return plumbing for selected speed, Faulty pressure sensor in DAB pump
How to Fix / Troubleshooting
Safety first: Turn off the pump before adjusting valves or opening the filter.
Steps to check:
- Check filter pressure gauge: If the filter pressure is significantly above normal operating range, backwash or clean the filter according to manufacturer instructions.
- Inspect return valves: Ensure all return line valves are fully open. Verify that any heater bypass valves are correctly set.
- Reduce speed: On variable‑speed DAB pumps, temporarily lower the speed setting and see if E11 disappears. This can confirm a hydraulic overpressure condition.
- Check for downstream blockages: Inspect check valves, heaters, chlorinators, and in‑line devices for restrictions.
- If system is clear but E11 remains: The DAB pressure sensor or its wiring may be faulty and should be tested and replaced if necessary.
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Repair Difficulty
Medium
3/5
Required Part
DAB discharge pressure sensor
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