Thermal alarm
Table 24. Thermal alarm recommended actions
Symptom Cause Recommended action
1. Ops panel Module Fault LED is
amber.
2. Fan Fail LED is illuminated on one
or more PCMs.
Internal temperature
exceeds a preset
threshold for the
enclosure.
1. Verify that the local ambient environment temperature is
within the acceptable range.
2. Check the installation for any airflow restrictions at either
the front or back of the enclosure. A minimum gap of
25 mm (1") at the front and 50 mm (2") 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 front. Use of the enclosure in a fully enclosed rack is not
recommended.
5. If possible, shut down the enclosure and investigate the
problem before continuing.
Troubleshooting 5U enclosures
Common problems that may occur with your 5U enclosure system.
The Module Fault LED on the Ops panel lights amber to indicate a fault for the problems listed in the following table:
NOTE: All alarms also report through SES.
Table 25. 5U alarm conditions
Status Severity
PSU alert – loss of DC power from a single PSU Fault – loss of redundancy
Cooling module fan failure Fault – loss of redundancy
SBB I/O module detected PSU fault Fault
PSU removed Configuration error
Enclosure configuration error (VPD) Fault – critical
Low temperature warning Warning
High temperature warning Warning
Over-temperature alarm Fault – critical
Under-temperature alarm Fault – critical
I
2
C bus failure Fault – loss of redundancy
Ops panel communication error (I
2
C) Fault – critical
RAID error Fault – critical
SBB I/O module fault Fault – critical
SBB I/O module removed Warning
Drive power control fault Warning – no loss of drive power
Drive power control fault Fault – critical – loss of drive power
Insufficient power available Warning
NOTE: Use the PowerVault Manager to monitor the storage system event logs for information about enclosure-related
events, and to determine any necessary recommended actions.
Troubleshooting and problem solving 39
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