Controller shows E16 and the generator shuts down after running for some time.

Safety: Allow the generator to cool before touching the alternator. Isolate from load and mains.

• Check load level: Review the kW/kVA load on the controller. Ensure it does not exceed the Himoinsa generator rating. Reduce non-essential loads if necessary.
• Inspect ventilation: Ensure air inlets and outlets on the canopy are clear. Remove debris and clean filters or grilles.
• Inspect alternator: Check for dust buildup on the alternator housing and cooling fan. Clean with dry compressed air.
• Check temperature sensor: Locate the alternator winding temperature sensor. Inspect wiring and test sensor resistance vs. temperature. Replace if readings are incorrect.
• Test under reduced load: Restart the generator with a lower load and monitor temperature alarms. Persistent E16 may indicate internal alternator issues requiring specialist service.