Saci
Earth Leakage / Insulation Degradation
Pump runs but causes frequent nuisance tripping of the RCD/GFCI
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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, Aging insulation, Long cable runs with high leakage capacitance, Shared neutral issues in pool electrical system
How to Fix / Troubleshooting
Safety first: Do not bypass or replace the RCD/GFCI with a higher rating to stop nuisance trips; this is a critical safety device.
- Inspect for moisture: Check the motor and terminal box for signs of water ingress and correct any sealing issues.
- Test on dedicated circuit: Have an electrician connect the pump to a dedicated RCD/GFCI circuit to rule out shared neutral or other loads causing trips.
- Insulation test: A professional can perform an insulation resistance test to determine if the motor windings are leaking to earth.
If insulation is degraded, replacing the motor assembly is the safest option.
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Repair Difficulty
Professional Required
5/5
Required Part
Pump Motor Assembly
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