Symptom Fan not operating as expected.
Cause
- The fans are not seated properly.
- The fan configuration does not meet the functional requirements of the
server.
- The
server is not ventilated properly.
- One or more required fans are not installed.
- Required fan blanks are not installed.
- Error messages are displayed during POST or in the IML.
- One or more fans are not functioning.
Action-
Be sure that the fans are properly seated and working:
- Follow the procedures and warnings in the
server documentation for removing the access panels, and accessing and replacing fans.
- Unseat, and then reseat, each fan according to the proper procedures.
- Replace the access panels, and then attempt to restart the
server.
-
Be sure that the fan configuration meets the functional requirements of the
server.
-
Be sure that no ventilation issues exist. If the
server is operated for an extended period with the access panel removed, airflow might be impeded, causing thermal damage to components.
-
Be sure that no POST error messages are displayed while booting the
server that indicate temperature violation or fan failure information.
-
Use
iLO or an optional IML viewer to access the IML to see if any event list error messages relating to fans are listed.
-
In the iLO web interface, click
Power & Thermal in the navigation tree:
- Click the
Fans tab, and verify the fan status and fan speed.
- Click the
Temperatures tab, and verify the temperature readings for each location on the Temperatures tab. If a hot spot is located, then check the airflow path for blockage by cables and other material.
A hot spot is not an absolute temperature but is relative to a component specification. Hot spot is defined as temperature on a sensor within 3°C of a Caution threshold listed on the Temperature tab.
-
Replace any required nonfunctioning fans and restart the
server.
For more information, see the
server maintenance and service guide.
-
Be sure that all fan slots have fans or blanks installed.
-
Verify that the fan airflow path is not blocked by cables or other material.
-
For HPE BladeSystem c-Class Enclosure fan issues, review the fan section of
Onboard Administrator
SHOW ALL and the
FAN FRU low-level firmware.