Qlogic QLogic Fibre Channel Switch Installation Guide Page 81

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5 – Diagnostics/Troubleshooting
POST Diagnostics
59055-00 B 5-5
D
5.1.1.4
Over Temperature Blink Pattern
An over temperature blink pattern is 5 blinks followed by a two second pause. The
5-blink error pattern indicates that the air temperature inside the switch has
exceeded the failure temperature threshold. The default failure temperature
threshold is 70° C. You can set the failure temperature threshold using the Set
Config System command. Refer to the ”Set Config Command” on page B-33 for
more information.
If the Heartbeat LED shows the over temperature blink pattern, do the following:
1. Inspect the chassis fans and vents. Are the intake and exhaust vents clear?
Are the fans operating and producing air flow?
Yes - Continue.
No - Remove any debris from fan intake and exhaust if necessary. If
the condition remains, continue.
2. Consider the ambient air temperature near the switch and clearance around
the switch. Make necessary corrections. If the condition remains, unplug the
switch from the AC power source, and contact your authorized maintenance
provider.
3. Open a command line window and log on to the switch. Enter the Shutdown
command, then power down the switch. Contact your authorized
maintenance provider.
2 seconds
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