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Table 11. Light and buzzer interpretations (continued)
LED/buzzer State Related Meaning Action
Fast blink (alternating
every half second)
Faster beep (1.5
seconds beep, 0.5
seconds silence). No
fan light constant.
No beep if muted.
Critical state - usually
temperature near
edge of operating
range
Check ambient
temperature and
increase if too cold or
decrease if too hot
immediately. If this
does not work, check
for a fan failure that
also has a broken
light.
Faster beep, more
than one fan light
on or a single PSU
fan light on. No
beep if muted.
Fans broken or out of
tolerance.
Replace fans
immediately.
Constant on Constant - no fan
lights lit constant
Failure state -
temperature in range
where damage could
occur
Check ambient
temperature and
increase if too cold or
decrease if too hot
immediately. If this
does not work check
for fan failure that
has a broken light,
too.
Constant - multiple
fan lights lit constant
Fans broken or out of
tolerance
Replace fans
immediately. Decrease
ambient temperature
Fan light Constant on Varying levels of
beep and chassis
fault light setting.
No beep if muted.
Fan broken or out of
tolerance.
Replace fans
immediately.
Drive light (amber) Constant on Varying levels of
beep and chassis
fault - usually slow
beep and slow flash.
No beep if muted.
Drive faulty Replace drive
Front operator's panel
ID LED
Flashing Ops panel ident on
Buzzer Off Front operator's panel
fault LED off
No issues
Off Front operator's panel
fault LED flashing or
constant
Muted See Table 4 on page
20 for interpretation
of lights and remedy.
Intermittent short
beep (0.5 second beep
every 32 seconds)
Various front
operator's panel fault
light flash states
Fault has occurred
and system is muted
but in remind mode
Check fault status
using ops panel fault
LED settings and
remedy.
Slow beep (half
second beep every 8
seconds)
Front operator's panel
fault LED slow blink
(0.5 seconds on, 3.5
seconds off)
Warning mode See Table 4 on page
20.
Chapter 5. Troubleshooting and problem solving 27