Allied Telesis X610-24SPS/X User Manual

Chapter 5: Troubleshooting

116

The FAULT LED indicates several different conditions of the switch with 
different flash sequences. After sequences of two or more flashes, the 
LED stops briefly, then repeats the sequence. If multiple faults occur, 

 

the LED flashes each sequence in turn, stops briefly, then repeats the 
sequences. See Table 9, “System STATUS LED Descriptions” on page 43. 
If the FAULT LED is flashing, the following conditions can exist:

If the FAULT LED flashes two times, one or more of the fan rotors in the 
chassis is operating below the recommended speed. The fan rotors can 
be located in either in the chassis or in a pluggable power supply. Contact 
Allied Telesis Technical Support for assistance. See “Contacting Allied 
Telesis” on page 18.

If the FAULT LED flashes three times, a chassis power supply fault has 
occurred and the chassis is powered by AT-RPS3000 Redundant Power 
Supply. Contact Allied Telesis Technical Support for assistance. See 
“Contacting Allied Telesis” on page 18.

If the FAULT LED flashes five times, the RPS3000 is connected to the 
x610 switch, but no RPS power is available to be supplied. 



Verify that the RPS3000 is receiving AC power and operating 
properly. Refer to the Troubleshooting chapter in the RPS3000 
Installation Guide for more information.

If the FAULT LED flashes five times, stops briefly and then repeats, the 
switch’s temperature has exceeded the recommended threshold.



Verify that the ambient air temperature around the x610 chassis is 
in the range of 0° C to 40° C (32° F to 104° F).



Verify that the chassis inlet air vents on the front panel and the fa 
exhausts on the rear panel are not blocked in a way that is 
impeding airflow through the chassis.



Verify that the stacking blank panel is installed on the rear panel if 
the stacking module is not installed.

The Fault LED flashing one time or four times is not supported in the 
design of the x610 switch.