Management module is over recommended temperature.


The advanced management module has exceeded the recommended temperature threshold.



Alert Category

Chassis/System Management (Critical) - mmTrapChassisC

Log Source


Automatically notify service




Chassis LED

Error, Temperature

Alarm Panel LED (BC T and BC HT)


User response

Perform these steps:
  1. Check the event log for other over temperature events and resolve them.
  2. Check the room ambient temperature to ensure that it is within the operating specifications for the chassis.
  3. Make sure that all fan/blower modules are running. Replace fan modules if necessary.
  4. Make sure that a device or filler is installed in each bay in the front and rear of the chassis, and make sure that there is nothing covering the bays. Any missing components can cause a major reduction in airflow for the blade server.
  5. Make sure that there is nothing covering the media tray (that will disrupt the airflow to the ambient temperature sensor).
  6. Update the firmware for the advanced management module. You can find firmware on the IBM BladeCenter software and device drivers Web page.
  7. Check the IBM Support Web page for any service bulletins that might be related to this problem.