ServerNet Cluster 6770 Hardware Installation and Support Guide

Troubleshooting
ServerNet Cluster 6770 Hardware Installation and Support Guide—522544-002
8-17
Monitoring an AC Transfer Switch
Table 8-10. LEDs on the AC Transfer Switch
LED
Type LED Color Meaning Recovery Action
AC Input
LEDs
PRIM IN
(green)
LED is lit. The AC power voltage is
present on the primary AC
power rail.
No action is
required.
LED is not lit. The AC power voltage is not
present on the primary AC
power rail.
Refer to Verifying
the AC Power on
page 8-18.
AUX IN
(green)
LED is lit. The AC power voltage is
present on the secondary AC
power rail.
No action is
required.
LED is not lit. The AC power voltage is not
present on the primary AC
power rail.
Refer to Verifying
the AC Power on
page 8-18.
PRIM
OK
(green)
LED is lit. The AC power voltage for the
primary AC power rail is within
the allowable range.
No action is
required.
LED is not lit. The AC power voltage for the
primary AC power rail is not
within the allowable range.
If this LED
remains unlit,
have an
electrician check
that the proper
AC power voltage
is being supplied
to the AC transfer
switch.
AUX OK
(green)
LED is lit. The AC power voltage for the
secondary AC power rail is
within the allowable range.
No action is
required.
LED is not lit. The AC power voltage for the
secondary AC power rail is
within the allowable range.
If this LED
remains unlit,
have an
electrician check
that the proper
AC power voltage
is being supplied
to the AC transfer
switch.
AC
Output
LED
FAULT
(yellow)
LED is lit. The AC power voltage is not
being transferred to the output.
Replace the AC
transfer switch.
LED is not lit. The AC power voltage is being
transferred to the output.
No action is
required.