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Fan problems

See this section to resolve issues related the to fans.

Abnormally high RPM (revolutions per minute)​

Complete the following steps until the problem is solved.

  1. Check the Lenovo XClarity Controller event log and the system error log for information to make sure if any of the fans or rotors of the fans fail. Replace the failed fan.

  2. With air flow sensor board installed, SE455 V3 BMC supports dust filter measurement to check the status of the dust filter. Log in to Lenovo XClarity Controller web interface, and go to Utilization > Fan Speed (RPM) > Dust Filter Measurement to take the measurement by selecting Run immediately (once), or by setting a regular schedule. When taking the measurement, the fans will operate at full fan speed for about 30 seconds. Make sure the high RPM is not caused by dust filter measurement.

  3. Check to see if the system inlet perforation or heatsinks are clogged.

  4. Make sure that all air baffles are correctly installed in the server.

  5. Check the thermal grease on the processor, and make sure it's not contaminated.