Alarm Reason Codes - Powerware 9170 User Manual

Troubleshooting

Alarm Reason Codes

Some alarms have a reason code as well as the alarm code. These reason
codes may help you to interpret and isolate the cause of an alarm.
Table 20 contains a listing of all reason codes along with the associated
alarm codes. It also gives an interpretation of the reason, and a
suggested corrective action.
Table 20. Alarm Reason Codes
Alarm Code and
Reason Code
M Check Battery A battery (pair of modules) has failed
an open cell test.
Open Cell
(Reason code 4)
M Check Battery The system batteries have degraded
to the point where system runtime is
Weak Battery
less than the designed rating.
(Reason code 5)
T Call Service The UPS has detected the input
phase rotation to be incompatible
Phase Error
with its output wiring and will not
(Reason code 6)
start up.
T Call Service A power module has detected an
internal fault and has shut down.
Module Failure
(Reason code 7)
T Call Service The UPS has detected an excessively
high number of automatic transfers
Excessive Transfers
from High Efficiency mode, and has
(Reason code 8)
switched to Double Conversion (Auto)
mode.
T Call Service A power module has detected an
initialization sequence problem and
Precharge Failure
will not start up.
(Reason code 9)
U Low Redundancy The UPS load exceeds 2800 watts per
battery string. The system will protect
Insufficient Batteries
the load during short power outages,
(Reason code 10)
but battery degradation or damage
may result.
U Low Redundancy The number of active power modules
is too few to provide the programmed
Insufficient Modules
redundancy level while protecting the
(Reason code 11)
load. The UPS will protect the load,
but will not be fault tolerant.
86
What it Means What to Do
Look in the alarm log for the slot number of the failed
modules. Verify that both battery modules are properly
installed. If properly installed, replace both battery
modules.
Replace all battery modules.
Correct the input wiring problem and restart the UPS.
Look in the alarm log for the slot number of the power
module and replace the defective module.
Contact your service representative.
Look in the alarm log for the slot number of the affected
module. Contact your service representative.
Reduce the load or install additional battery modules (two
modules per string).
Reduce the load or install additional power modules.
Powerware 9170 User's Guide
®
:
www.powerware.com