Powerware 9170 User Manual page 116

Troubleshooting
Table 23 contains descriptions of non-critical alarm messages.
Non-critical alarms are not as urgent as critical alarms, but should be
attended to as soon as convenient to avoid the problem becoming
critical.
Table 23. Non-Critical Alarm Messages
Alarm Message
B Near Low The battery voltage has reached the
Battery Near Low Battery set point.
D Low Runtime Batteries in the unit are nearly
discharged.
O Check Memory The configuration as stored in the
system memory may have been
corrupted.
M Check Battery The batteries have failed an automatic
system test.
M Check Battery A battery (pair of modules) has failed
an open cell test.
Open Cell
M Check Battery The system batteries have degraded to
the point where system runtime is less
Weak Battery
than the designed rating.
U Low The number of active power modules
Redundancy is too low to provide the programmed
redundancy level to protect the
current load.
U Low The UPS load exceeds 2800 watts per
Redundancy battery string. The system will protect
the load during short power outages,
Insufficient
but battery degradation or damage
Batteries
may result.
U Low The number of active power modules
Redundancy is too few to provide the programmed
redundancy level while protecting the
Insufficient
load. The UPS will protect the load,
Modules
but will not be fault tolerant.
108
What It Means
If the voltage increases, the alarm clears
automatically. If it drops further, it will cause a
Low Battery alarm.
Perform an orderly shutdown of all equipment
and wait for AC input power to return. When
AC input power returns, the UPS begins
recharging batteries and automatically restarts.
Look for the slot number (third line on display)
of the failed module. Contact your service
representative.
Contact your service representative.
Look for the slot number (third line on display)
of the failed modules. Verify that both battery
modules are properly installed. If properly
installed, replace both battery modules.
Replace all battery modules.
The unit is able to protect the equipment, but
will not be fault tolerant. To regain the desired
redundancy, either add power modules or
reduce the load.
Reduce the load or install additional battery
modules (two modules per string).
Reduce the load or install additional power
modules.
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Powerware 9170
®
What to Do
UPS User's Guide Rev B www.powerware.com
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