Fans running at a higher than expected speed

Symptom

The fans are running at a higher speed than expected.

Cause

• The system temperature sensor is reading within approximately 10°C of the Caution threshold.
• An air baffle or blank is missing or not installed properly and causing a disruption of the airflow.
• The processor heatsink is not installed as indicated in the server documentation.
• A supported fan is not installed in the server.

Action

1. Update the server to the latest firmware versions, such as iLO firmware, system BIOS, option firmware, etc.
2. Verify the Temperature tab. Fan speeds can be high if a sensor temperature is within approximately 10°C of the Caution threshold.
3. Verify that all air baffles and required blanks, such as drive blanks, processor heatsink blanks, power supply blanks, etc., are installed.
4. Verify that the correct processor heatsink is installed.
5. Verify that the correct fan is installed, if the system supports both standard fans and performance fans.

For more information about updating the firmware, see "Updating firmware or System ROM." For server-specific documentation, see "Server documentation."