American Power Conversion Smart-UPS VT Manuale Utente

Load Is No Longer 
Above Alarm Threshold.

The load previously exceeded the 
alarm threshold and the situation has 
been corrected either because the load 
decreased or the threshold was 
increased.

No corrective action necessary.

Load Power Is Above 
Alarm Limit.

The load has exceeded the user-
specified load alarm threshold.

Option 1: Use the display interface to 
raise the alarm threshold.
Option 2: Reduce the load.

Mains Not Available. 
Input Freq/Volt Out of 
Range.

The frequency or voltage is out of 
acceptable range for normal 
operation.

Correct the input voltage to provide 
acceptable voltage or frequency.

Min Runtime Restored.

The system runtime dropped below 
the configured minimum and has 
been restored. Additional Battery 
Modules were installed, the existing 
Battery Modules were recharged, the 
load was reduced, or the threshold 
was decreased.

No corrective action necessary.

No Batteries Are
Connected.

No battery power is available.

Check that batteries are inserted 
properly.

Number of Battery 
Modules Decreased.

One or more battery modules were 
removed.

No corrective action necessary.

Number of Battery 
Modules Increased. 

One or more battery modules were 
added. 

No corrective action necessary.

Replace Batt(s).

One or more Battery Modules need 
replacement (only applicable with 
internal batteries).

Refer to Module Replacement section 
for procedures.

Runtime Is Below Alarm 
Threshold.

The predicted runtime is lower than 
the user-specified minimum runtime 
alarm threshold. Either the battery 
capacity has decreased, or the load 
has increased.

Option 1: Allow the battery modules 
to recharge.
Option 2: If possible, increase the 
number of battery modules.
Option 3: Reduce load. 
Option 4: Decrease alarm threshold.
Contact APC Customer Support. 
See rear cover.

Site Wiring Fault. 

Wrong phase rotation on the input 
side. The UPS will continue to supply 
conditioned power, but bypass is 
unavailable.

An electrician should check that the 
UPS has been wired properly.

Shutdown Due To Low 
Battery.

The UPS was in Battery Operation 
and shut down the load when no more 
battery power was available.

No corrective action necessary.
Note: If the problem reoccurs, con-
sider increasing the battery capacity.

Static Bypass Switch 
Fault.

The Static Bypass Switch has failed.

Contact APC Customer Support. See 
rear cover.