Lowara
Earth Leakage / Nuisance Tripping
Pump runs but trips the house RCD/GFCI intermittently
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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
Moisture in motor windings, Damaged insulation on motor cable, Water ingress into Lowara terminal box, Faulty RCD with low trip threshold
How to Fix / Troubleshooting
Safety first: Repeated RCD trips indicate a potential shock hazard. Do not bypass safety devices.
- Inspect for moisture: Open the motor terminal box and check for water or condensation. Dry thoroughly and improve sealing.
- Check cable: Examine the cable from the control box to the pump for damage. Replace if any cuts or abrasions are found.
- Test with another circuit: If safe and permitted, have an electrician test the pump on a known good RCD to rule out a faulty device.
- Insulation test: A technician should perform an insulation resistance test on the motor and cable.
- When to call a pro: Persistent earth leakage requires professional diagnosis and likely motor or cable replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Lowara pool pump motor and supply cable
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