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27
Troubleshooting
continued
Trouble-
shooting:
Table 6,
continued
Continued on next page
Problem Possible Cause Solution
One or more
servers shuts
down when the
UPS is on bat-
ter
y
, but does not
restart when
p
ower returns.
Timer mode: the
o
p
eratin
g
s
y
stem
shutdown time as
set in PowerChute
plus is too short.
The
p
ower mana
g
e-
ment software shut-
down time must be set
lon
g
er than the Inter-
face Ex
p
ander Timer
shutdown mode set-
tin
g
.
Confirmed mode:
the Interface
Ex
p
ander did not
receive shutdown
confirmation from
servers that shut
down, and utilit
y
p
ower was restored.
The server shut
down but the UPS
did not shut down.
Ve rif
y
that the servers
can confirm
shutdown. See “Pow-
erChute plus su
pp
ort
for Confirmed shut-
down mode” on
p
a
g
e
20. If not, confi
g
ure
the Interface Ex
p
ander
for Timer or Until
Low Batter
y
shut-
down mode.
The server on
UPS Advanced
p
ort cannot com-
municate with
the UPS.
The communica-
tion cable is not
p
ro
p
erl
y
fastened.
Ve rif
y
cable connec-
tions. See “Choosin
g
cables: Table 1” on
p
a
g
e 4.
The wron
g
cable is
bein
g
used.
Ve rif
y
that the cable is
correct for this server.
The master server is
connected to the
Interface Ex
p
ander.
The master server
must be connected to
the com
p
uter inter-
face (Advanced)
p
ort
on the
UPS
.
The
p
ort on the
master server is
bein
g
used b
y
another a
pp
lication.
Close the offendin
g
a
pp
lication.