Troubleshooting/FAQs
13.1 General problems
SIMATIC IPC647C
Operating Instructions, 12/2010, A5E02669337-02
133
Error displays on the front panel
Front LED Possible cause Details about the error display
Red WATCHDOG LED is lit Watchdog has triggered See section Watchdog (WD) (Page 61).
Red TEMP LED is lit Excess temperature in the device See section Temperature monitoring/display
(Page 57).
Red FAN LED is lit Fan failure See section Fan monitoring (Page 60).
Red HDD1 ALARM LED is lit RAID reports that hard disk 1 is
defective
See section RAID monitoring (Page 62).
Red HDD2 ALARM LED is lit RAID reports that hard disk 2 is
defective
See section RAID monitoring (Page 62).
Red HDD1 ALARM and HDD2
ALARM LEDs are flashing
RAID is in the "rebuild" state See section RAID monitoring (Page 62).
Red HDD1 ALARM and HDD2
ALARM LEDs are lit
RAID system is not ready for
operation:
Affected drive must be identified with the help of the
RAID software.
See section RAID monitoring (Page 62).
Red SF PROFINET LED is lit A fault has occurred on the CPU
1616 onboard interface
See section CP 1616 onboard communications
processor (Page 207).
All front-panel LEDs are
constantly lit
Error in early BIOS-POST In this case, contact Technical Support.
Also see section Overview of the monitoring functions (Page 59).
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