Siemens SIMATIC IPC647D

Technical support
A.2 Troubleshooting
SIMATIC IPC647D
194 Operating Instructions, 01/2014, A5E32996306-AA
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)"
Red TEMP LED is lit
Excess temperature in the device
See section "Temperature monitoring/display"
Red FAN LED is lit
Fan failure
See section "Fan monitoring"
Red HDD0 ALARM LED is lit
RAID reports that hard disk 0 is defective
See section "Status displays"
Red HDD1 ALARM LED is lit
RAID reports that hard disk 1 is defective
See section "Status displays"
Red HDD2 ALARM LED is lit
RAID reports that hard disk 2 is defective
See section "Status displays"
HDD | HDD3 ALARM is lit in
red or flashes green
RAID reports that hard disk 3 is defective See section "Status displays"
HDD0, HDD1, HDD2 ALARM
and HDD | HDD3 ALARM
flash red
RAID is in the "rebuild" state See section "Status displays"
HDD0, HDD1, HDD2 ALARM
and HDD | HDD3 ALARM is lit
in red
RAID system is not ready for operation: Affected drive must be identified with the help
of the RAID software. See section "Expanding
and assigning parameters to the device",
section "Drives" and section "Managing RAID
systems".
PN Ι MPI/DP lights up red A fault has occurred on the CPU 1616
onboard interface
See section "Status displays"
All front-panel LEDs are
constantly lit
Error in early BIOS-POST Contact Technical Support.
Redundant power supply
Problem
Possible cause
Possible remedy
Device failure
despite redundant
power supply in
case of power
failure
• One module is not switched on
• Both modules are connected
so the same AC circuit
• Switch on both modules
• Connect modules to separate AC circuits