E9
Davey
Internal Sensor Fault (Temperature/Current/Flow Sensor Error)
Davey pool pump controller shows E9 and the pump will not run.
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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
Failed internal temperature sensor on motor, Faulty flow sensor in wet end (if fitted), Damaged current sensing circuit on PCB, Wiring fault between sensor and controller
How to Fix / Troubleshooting
Safety first: Turn off power before opening any covers or disconnecting sensors.
Step-by-step checks:
- 1. Power cycle: Fully isolate power for 5 minutes, then restore and see if the error clears. Transient faults can sometimes reset.
- 2. Inspect sensor wiring: If your Davey model has an external flow or temperature sensor, check that its cable is intact and firmly connected to the controller.
- 3. Check for water ingress: Moisture inside the motor terminal box or controller can damage sensors and electronics; dry and reseal as needed.
Persistent E9 usually requires replacement of the affected sensor or the control PCB. Contact a qualified technician.
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Repair Difficulty
Professional Required
5/5
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