Deployment Guide
Table 24. Troubleshooting thermal alarm
Symptom Cause Recommended action
4. Check for excessive recirculation 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, described in Figure 31. Ops panel LEDs—5U enclosure front panel on page 68, 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
For details about replacing modules, see the Dell EMC PowerVault ME4 Series Storage System Owner’s Manual.
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.
Thermal considerations
NOTE:
Thermal sensors in the 5U84 enclosure and its components monitor the thermal health of the storage system.
• Exceeding the limits of critical values activates the over-temperature alarm.
• For information about 5U84 enclosure alarm notification, see Table 25. 5U alarm conditions on page 78.
78 Troubleshooting and problem solving