Controller shows INTAKE AIR TEMP HIGH; generator may derate or shut down in hot weather.

Safety first: Place the controller in OFF and open the main breaker. Allow the unit to cool.

• Check ventilation: Ensure all Guardian enclosure louvers are clear and that minimum clearances from walls and vegetation are maintained.
• Shade and airflow: If installed in direct sun, consider adding shading that does not block airflow.
• Inspect sensor: Locate the intake air temperature sensor and verify the connector is secure. Replace the sensor if physically damaged.
• Reset and test: Clear the alarm and run the unit during cooler hours to confirm operation. Persistent alarms in normal ambient conditions require technician evaluation.