Generator shuts down with E18; controller log shows ground fault or earth leakage alarm.

Safety first: Ground faults can present shock and fire hazards. Isolate both utility and generator sources and lockout/tagout before inspection.

• Inspect for moisture: Check inside the Genergy enclosure and ATS for signs of water, condensation, or corrosion. Dry components thoroughly and correct any roof or conduit leaks.
• Check load circuits: Disconnect downstream load feeders one by one and test insulation resistance to ground with a megohmmeter. Identify and repair any circuits with low insulation resistance.
• Inspect alternator: Visually inspect alternator windings for burn marks or contamination. If ground fault persists with all loads disconnected, the alternator may be compromised.
• Test ground fault sensor: Verify wiring to the ground fault CT or sensor. Replace the sensor if it falsely trips with known good circuits.