Controller shows E06 and the generator will not start or shuts down shortly after starting.

Safety: Turn OFF the generator and disconnect AC power to the battery charger before working on the battery. Wear eye protection and gloves.

• Measure battery voltage: Use a multimeter across the battery terminals. For a 12 V system, voltage should be around 12.6–13.5 V at rest; for 24 V, around 25.2–27 V.
• Inspect terminals: Check for corrosion, loose clamps, or damaged cables. Clean terminals with a wire brush and apply dielectric grease. Tighten connections securely.
• Check battery charger: Locate the Himoinsa battery charger module in the control panel. Confirm it has AC supply and is outputting the correct DC voltage. Check fuses and status LEDs. Replace the charger if no output and fuses are good.
• Load test battery: If available, use a battery load tester to check capacity. Replace the battery if it fails the test or is older than the recommended service life.
• Clear alarm and test: Reconnect charger and battery, clear E06 on the controller, and attempt a manual start. Monitor battery voltage during cranking; if it drops excessively, the battery may still be weak.