Controller shows E17, generator remains running but alarm is active

Safety first: If temperature continues to rise, shut down the generator. Allow it to cool before opening the cooling system.

• Step 1 – Inspect radiator and airflow: With the engine off and cool, check the radiator fins and enclosure vents for dirt and debris. Clean as needed.
• Step 2 – Check coolant mixture: Verify that coolant is the correct type and concentration. Extremely high water content can reduce boiling point.
• Step 3 – Verify fan operation: Start the generator and observe the radiator fan. Ensure it spins at proper speed and direction. Replace a slipping belt or faulty electric fan motor.
• Step 4 – Monitor temperature: After cleaning and verifying fan operation, run the unit under normal load and watch the temperature reading. If E17 persists, the thermostat or water pump may require replacement by a technician.