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Chassis Over-Temperature Detection
Chassis Over-Temperature Detection
If a Switch 2800 Series device reaches an over-temperature condition, it
generates a chassis-module Warning message in the Event Log and in any
optionally configured debug destinations (console session and SyslogD serv-
ers). If the switch later returns to its acceptable temperature range, it signals
this event with a chassis module Information message to the same destina-
tions. These messages include the number of times the switch has detected
the events since the last reboot. For example, suppose that you notice the
following three messages at the end of the current Event Log message listing:
Figure C-1. Chassis Over-Temperature Messaging
The above messages indicate that the switch detected the following chassis
conditions since the last reboot:
1. An over-temperature condition occurred on August 17, 2003 at 11:28:05,
meaning the switch was operating above its acceptable, internal temper-
ature range. The Failure value of "1" indicates this is the first over-
temperature condition to occur since the last reboot.
2. The switch returned to its acceptable temperature range at 11:33:23 on
the same day. (To determine this temperature range, refer to the Installa-
tion and Getting Started Guide shipped with the switch.)
3. Another over-temperature condition occurred on August 17th at 12:03:18
and the switch is currently operating in this condition. The Failure value
of "2" indicates this is the second over-temperature condition to occur
since the last reboot.
CAUT ION If an over-temperature condition occurs in a Switch Series 2800 device,
continued operation can result in damage to the device.
■ Check the event log for fan failure warnings. If the switch has experienced
a fan failure, remove power from the switch and contact your HP service
and support representative.
■ If there are no fan failures, ensure that the ambient temperature in the
switch’s operating area is not causing the over-temperature condition. If
the condition persists, remove power from the switch until you can find
the cause and apply an effective remedy.
C-5