Powerware 9170 - Non-Critical Alarm Messages and Actions

Troubleshooting
108
Powerware
®
9170
+
UPS User’s Guide S Rev B www.powerware.com
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 What It Means What to Do
BNearLow
Battery
The battery voltage has reached the
Near Low Battery set point.
If the voltage increases, the alarm clears
automatically. If it drops further, it will cause a
Low Battery alarm.
D Low Runtime Batteries in the unit are nearly
discharged.
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.
OCheckMemory The configuration as stored in the
system memory may have been
corrupted.
Look for the slot number (third line on display)
of the failed module. Contact your service
representative.
M Check Battery The batteries have failed an automatic
system test.
Contact your service representative.
M Check Battery
Open Cell
A battery (pair of modules) has failed
an open cell test.
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.
M Check Battery
Weak Battery
The system batteries have degraded to
the point where system runtime is less
than the designed rating.
Replace all battery modules.
ULow
Redundancy
The number of active power modules
is too low to provide the programmed
redundancy level to protect the
current load.
Theunitisabletoprotecttheequipment,but
will not be fault tolerant. To regain the desired
redundancy, either add power modules or
reduce the load.
ULow
Redundancy
Insufficient
Batteries
The UPS load exceeds 2800 watts per
battery string. The system will protect
the load during short power outages,
but battery degradation or damage
may result.
Reduce the load or install additional battery
modules (two modules per string).
ULow
Redundancy
Insufficient
Modules
The number of active power modules
is too few to provide the programmed
redundancy level while protecting the
load. The UPS will protect the load,
but will not be fault tolerant.
Reduce the load or install additional power
modules.