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5. Trouble
S hooting
& FAQ
#
Issue
1
Fan
won't
run,
and
no
12V
o utput
2
The
fan
is
running,
but
there
is
no
12V
o utput.
3
After
a
few
minutes,
the
PSU
stops
working,
starts
working,
stops
working
and
keeps
cycling.
4
Output
is
normal,
but
the
fan
is
not
working.
5
The
PSU
suddenly
has
no
output
and
can't
be
started
a gain.
P SU
Reason
Troubleshooting
AC
Input
is
1. Make
sure
the
AC
input
wire
has
a
good
abnormal
connection
a nd
t he
p lugs
a re
c onnected
f irmly
2. Make
s ure
t he
m ains
p ower
i s
w orking
w ell
a nd
i ts
voltage
i s
a bove
1 00V.
1. Voltage
in
1. Please
check
whether
the
voltage
is
above
100V
your
power
with
m ultimeter
t o
m ake
s ure
t he
P SU
c an
s witch
o n
system
is
lower
correctly.
than
r equired
2. Check
whether
there
is
a
short
circuit
output
or
2. PSU
is
in
overload
that
is
causing
the
PSU
to
enter
a
locked
protection
status.
After
removing
the
problem,
the
PSU
should
mode
power
u p.
PSU
is
in
1．Check
w hether
t he
f an
i s
w orking
over-‐heat
2．Check
w hether
t he
f an's
v ent
i s
b eing
b locked
protection
3．Check
whether
there
is
a
dust
buildup
inside
the
PSU
d ue
t o
p rolonged
u se.
D o
N OT
r emove
t he
P SU's
cover
u nless
t rained
t o
d o
s o.
4 ． Check
the
power
and
ambient
temperatures
follows
t he
L oad/Temperature
g raph
Fan
i s
b roken
1. Check
t hat
t he
f an
i s
c lear
o f
b lockages
o r
b uildup
2. Fan
i s
b roken
a nd
n eeds
t o
b e
r eplaced.
Check
whether
the
load
current
has
exceeded
the
The
PSU
is
in
built-‐in
overcurrent
protection
limit.
The
protection
over-‐current
automatically
triggers
when
the
load
current
protection.
exceeds
the
limit
to
protect
against
damage
to
the
PSU
a nd
t he
s erver.
APW3+-‐12-‐1600
S eries
7
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