AO Smith pool pump trips the circuit breaker or GFCI immediately or within a few seconds of starting.

Safety Warning: Repeated breaker tripping indicates a potentially dangerous fault. Do not keep resetting without investigation.

• Inspect wiring: With power OFF, open the motor terminal box and inspect for loose strands, burned insulation, or water intrusion. Dry and repair as needed.
• Check cord/conduit: Look for cuts, crushed sections, or exposed copper in the cable feeding the AO Smith motor. Replace damaged sections.
• Test motor insulation: A technician should perform an insulation resistance test between windings and ground. Low readings indicate a ground fault.
• Verify breaker rating: Ensure the breaker amperage matches the motor’s full-load current and local code. Replace an undersized breaker only after confirming no faults.
• Replace motor if shorted: If windings are shorted or grounded, replace the motor assembly.