Troubleshooting

Table 5-1: Main Module and Electronics Modules M1-M4 Active Alarms

LCD Display

Possible Cause

Suggested Action

 

 

 

x Alarms

The UPS triggers an alarm if the

Ensure that unit grills are not blocked

 

ambient temperature inside the

and fans are operational. Correct any

Ambient Over

detecting electronics module exceeds

environmental conditions that may be

Temperature

the preset threshold of 80°C (176°F).

causing the condition. Verify that the

 

 

Other than the alarm, no UPS action is

ambient temperature is less than 40°C

 

currently associated with this condition.

(104°F).

 

 

Contact Technical Support for

 

 

assistance.

 

 

 

x Alarms

Batteries are depleted beyond their

This is a normal operation. The UPS

 

lower limits due to the UPS being on

will restart when utility power is

Automatic

battery for an extended period. The

restored.

Shutdown Pending

load has been disengaged and the

 

 

 

 

system has entered the 30-second

 

 

powerdown mode.

 

 

 

 

x Alarms

This alarm is triggered by the one of

 

the following events:

Batteries

 

Disconnected

• The UPS detects that at least one

 

battery is installed incorrectly.

 

• Not enough battery modules are

 

installed to support the current

 

load levels.

Remove bezels and check that each battery module is firmly seated in its slot. Verify that the load does not exceed 12 kW.

Contact Technical Support for assistance.

x Alarms

At least one electronics module detects

Switch to Maintenance Bypass mode,

 

that battery voltage is abnormally high

and contact Technical Support for

Battery DC Over

while operating in Battery mode.

assistance.

Voltage

 

 

 

 

 

x Alarms

The UPS detects that the current

This is a normal operation. The UPS

 

battery voltage level has dropped

will begin the shutdown process.

Battery Low

below the preset threshold configured

 

 

 

 

in the EEPROM for this alarm. This is

 

 

to be expected when operating in

 

 

Battery mode and when the batteries

 

 

discharge.

 

 

 

 

xAlarms

Battery n Needs

Service

The UPS detects a battery fuse failure

Contact Technical Support for

or an automated battery test failure. An

assistance.

automated battery test failure is

 

reported when battery voltage is less

 

than 1.8 volts per cell during the first

 

75 seconds of unscheduled Battery

 

mode operation.

 

The variable n indicates the slot in

 

which the faulted battery module is

 

installed. (For example, slot 1 is the

 

uppermost bay of the four-battery bay

 

slots.)

 

continued

5-2

HP Uninterruptible Power System R12000 XR Models User Guide