3Com External PoE Power System PSE2500-A3 - Manual (Page 31)

User Manual
PSE2500-A3 External PoE
Power System Chapter 5 Engineering
Maintenance and
Troubleshooting
5-2
Table 5-1 Troubleshooting guide
Controller
alarm
status
Rectifier
display
Possible
problems
Possible solution
RUN
ALM
NONE
z The AC
power input
circuit
breakers
has
operated.
z AC input
voltage is
too low or
power lost
z Verify that AC power
input circuit breaker
is closed; close
circuit breaker if it is
open.
z Verify the AC power
is present and in
normal range
RUN
ALM
AC OK
FAULT
Rectifier failure
Output beyond
normal range
Replace the rectifier
RUN
ALM
AC OK
DC OK
FAULT
Communication
error between
the rectifier and
the controller
Replace the rectifier
RUN
ALM
AC OK
Rectifier has no
output and it is
in standby
mode;
Over load;
Ambient
temperature is
too high
Rectifier failure;
Command the rectifier
to work or reset the
controller
Check if the load is over
the rating.
Check the ambient
temperature.
Replace the rectifier