APC SUA1500 User Manual

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P
ROBLEM AND 
P
OSSIBLE 
 
C
AUSE
 
S
OLUTION
 
T
HERE IS NO 
U
TILITY POWER AND THE 
UPS
 HAS BEEN TURNED OFF
 
120V/230V Models: When the 
UPS is off and there is no utility 
power, use the cold start feature to 
apply power to the connected 
equipment from the UPS battery.  
Cold start is not a normal condi-
tion. 
 
Press and hold the 
 button, (for about 3 seconds).  The unit will 
beep, the LED lights will flash, and the unit will beep a second time. 
Release the ON button during the second beep.  This will supply imme-
diate power to the UPS and the connected equipment.  Make sure con-
nected equipment is switched to ON. 
UPS
 OPERATES ON BATTERY ALTHOUGH NORMAL LINE VOLTAGE EXISTS
 
UPS input circuit breaker tripped. 
Reduce the load on the UPS by unplugging equipment and resetting the 
circuit breaker (on the back of UPS) by pressing the plunger in. 
Very high, low, or distorted line 
voltage. Inexpensive fuel powered 
generators can distort the voltage. 
Move the UPS to a different outlet on a different circuit. Test the input 
voltage with the utility voltage display (see below). If acceptable to the 
connected equipment, reduce the UPS sensitivity.  
B
ATTERY 
C
HARGE AND 
B
ATTERY 
L
OAD 
LED
S FLASH SIMULTANEOUSLY
 
The internal temperature of the 
UPS has exceeded the allowable 
threshold for safe operation. 
Check that the room temperature is within the specified limits for opera-
tion. 
Check that the UPS is properly installed allowing for adequate ventila-
tion. 
Allow the UPS to cool down. Restart the UPS. If the problem continues 
contact APC at, 
.  
D
IAGNOSTIC 
U
TILITY 
V
OLTAGE 
F
EATURE
 
Utility Voltage 
 
The UPS has a diagnostic feature that displays the utility voltage. Plug 
the UPS into the normal utility power. 
Press and hold the 
 button to view the utility voltage bar graph dis-
play. After a few seconds the five-LED, Battery Charge, 
, display on 
the right of the front panel shows the utility input voltage.  
Refer to the figure at left for the voltage reading (values are not listed on 
the UPS). 
The display indicates the voltage is between the displayed value on the 
list and the next higher value.  
Three LEDs light, indicating utility voltage within the normal range. 
If no LEDs are lit and the UPS is plugged into a working utility power 
outlet, the line voltage is extremely low. 
If all five LEDs are lit, the line voltage is extremely high and should be 
checked by an electrician. 
 
The UPS starts a self-test as part of this procedure. The self-test does not affect the voltage display. 
 
   
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