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Troubleshooting 265
Air Inlet Temperature Threshold Settings
The table below lists the enclosure’s air inlet temperature thresholds and the
different fan controller firmware actions for each threshold.
Table 5-6. Enclosure Air Inlet Temperature Threshold Settings
Enclosure
Inlet
Condition
Threshold
Setting
Ambient
Temp
Threshold Level Action
Normal
mode
Upper
non-recoverable
43 °C
(109.4 °F)
Extremely high Fan controller (FC)
firmware shuts down the
system.
NOTE: The firmware reads
inlet temperature every 5 secs.
If the inlet temperature reaches
non-recoverable threshold, the
firmware will start to check the
power status for each sled and
initiate the sled for graceful
shutdown (pull-low 4 seconds).
Upper critical 41 °C
(105.8 °F)
High Chassis status indicator
lights amber.
Upper
non-critical
38 °C
(100.4 °F)
Warning Temperature events are
recorded in the SEL.
Lower
non-critical
N/A Warning Temperature events are
recorded in the SEL.
Lower critical N/A Low Chassis status indicator
lights amber.
Lower
non-recoverable
5 °C
(41
°F)
Extremely low Chassis status indicator
lights amber.