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EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual
Figure 3-7: Cooling Fan Module LED
RED Status
OFF
The cooling fan module is operating normally.
ON
The cooling fan module has failed and must be replaced.
Table 3-7: Cooling Fan Module LED Definitions
The subsystem has a novel approach to stabilizing the temperature within the
subsystem: When the sensors within the enclosure detect critical working conditions,
such as high ambient temperature or the failure of any cooling or PSU module, the
system will turn the cooling fans to high speed to extract more heat. Once the
ambient temperature cools down to normal or the faulty module has been replaced,
the cooling fans return to normal speed.
3.3 Audible Alarm
Different subsystem environmental and operational parameters (i.e., temperature,
etc.) have been assigned a range of values between which they can fluctuate. If either
the upper or lower thresholds are exceeded, an audible alarm will automatically be
triggered. The alarm will also be triggered when an active component of the
subsystem fails. If the subsystem manager is onsite and hears the alarm, the manager
will have to read the error message on the LCD screen or the PC terminal in order to
determine what has triggered the alarm. After determining what has occurred, the
subsystem manager must take appropriate actions to rectify the problem.
WARNING!
When an alarm is triggered, it is necessary for you to determine the problem. If the
audible alarm is ignored and the problem is not rectified, unexpected damages may
occur.
3-8
Audible Alarm