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PROBLEM AND/OR POSSIBLE
C
AUSE
S
OLUTION
THE OVERLOAD LED IS ILLUMINATED AND THE UPS EMITS A SUSTAINED ALARM TONE
The UPS is overloaded. The
connected equipment is draw-
ing more VA or more Watts
than the UPS can sustain.
The connected equipment exceeds the specified “maximum load.”
The alarm remains on until the overload is removed. Disconnect nonessen-
tial equipment from the UPS to eliminate the overload.
The UPS continues to supply power as long as it is online and the circuit
breaker does not trip; the UPS will not provide power from batteries in the
event of a utility voltage interruption.
If a continuous overload occurs while the UPS is on battery, the unit turns
off output in order to protect the UPS from possible damage.
(See Maximum Power and VA Specifications)
The condition persists for a few
seconds, stops and then repeats
approximately every minute.
Equipment such as laser printers draw a great amount of power in short
bursts periodically. For instance, laser printers commonly draw nearly
1000 W of power (varies among different printers) for a few seconds, the
draw will then stop, only to resume seconds later. The UPS is then sub-
jected to periodic high power draws, and will be briefly overloaded. If the
UPS must power a laser printer, be sure the UPS can meet the maximum
draw of the laser printer.
THE REPLACE BATTERY LED IS ILLUMINATED
Replace battery LED flashes
and short beep is emitted every
two seconds to indicate the
battery is disconnected.
Check that the battery connectors are fully engaged.
Weak battery. Allow the battery to recharge for 24 hours. Then, perform a self-test. If the
problem persists after recharging, replace the battery.
Failure of a battery self-test. The UPS emits short beeps for one minute and the replace battery LED
illuminates. The UPS repeats the alarm every five hours. Perform the self-
test procedure after the battery has charged for 24 hours to confirm the
replace battery condition. The alarm stops and the LED clears if the battery
passes the self-test.
THE SITE WIRING FAULT LED ON THE REAR PANEL IS ILLUMINATED (120 V ONLY)
The UPS is plugged into an
improperly wired utility power
outlet.
Wiring faults detected include missing ground, hot-neutral polarity reversal,
and overloaded neutral circuit.
Contact a qualified electrician to correct the building wiring.
THE INPUT CIRCUIT BREAKER HAS TRIPPED (230 V MODELS AND 1500 VA, 120 V MODELS ONLY)
The circuit breaker switches
off.
Reduce the load on the UPS by unplugging equipment. Reset the breaker.
THE AVR LED IS ILLUMINATED
Your system is experiencing
excessive periods of low or
high voltage.
Have qualified service personnel check your facility for electrical prob-
lems. If the problem continues, contact the utility company for further as-
sistance.