IBM 1269-3S2, Инструкция по установке, обслуживанию и эксплуатации

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Troubleshooting
39
4.4.4 Thermal Alarm
Symptom Cause Action
1 Ops Panel FAULT
LED AMBER.
2 An AMBER LED on
one or more Power
Supply/Cooling
Modules.
3 Audible Alarm
sounding.
4 Air temperature
exiting PSU above
55°C.
If the internal temperature
measured in the airflow through
the enclosure exceeds a pre-
set threshold, a thermal alarm
will sound. 1 Check local ambient environment
temperature is below the upper 40°C
specification.
2 Check the installation for any airflow
restrictions at either the front or rear
of the enclosure. A minimum gap of
25mm at the front and 50mm at the
rear is recommended.
3 Check for restrictions due to dust
build-up, clean as appropriate.
4 Check for excessive re-circulation of
heated air from rear to the front, use
in a fully enclosed rack installation is
not recommended.
5 If possible shutdown the enclosure
and investigate the problem before
continuing.