PROBLEM AND/OR POSSIBLE

 

SOLUTION

CAUSE

 

 

THE OVERLOAD LED IS ILLUMINATED AND THE UPS EMITS A SUSTAINED ALARM TONE

 

 

 

The UPS is overloaded. The

 

The connected equipment exceeds the specified “maximum load.”

connected equipment is draw-

 

The alarm remains on until the overload is removed. Disconnect nonessen-

ing more VA than the UPS can

 

 

tial equipment from the UPS to eliminate the overload.

sustain.

 

 

The UPS continues to supply power as long as it is on-line 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.

 

 

THE REPLACE BATTERY LED IS ILLUMINATED

 

 

 

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 (110/120 V MODEL ONLY)

 

 

 

The UPS is plugged into an

 

Wiring faults detected include missing ground, hot-neutral polarity reversal,

improperly wired utility power

 

and overloaded neutral circuit.

outlet.

 

Contact a qualified electrician to correct the building wiring.

 

 

 

 

THE INPUT CIRCUIT BREAKER HAS TRIPPED

 

 

 

The UPS is overloaded. The

 

Reduce the load on the UPS by unplugging equipment. Press in the plunger

plunger on the circuit breaker

 

on the circuit breaker.

has popped out.

 

 

 

 

UPS OPERATES ON BATTERY ALTHOUGH UTILITY VOLTAGE EXISTS

 

 

 

The UPS input circuit breaker

 

To reduce the load on the UPS, unplug equipment and press in the plunger

has tripped.

 

on the circuit breaker.

 

 

 

The line voltage is very high,

 

Move the UPS to a different outlet on a different circuit, as inexpensive fuel

low or distorted.

 

powered generators may distort the voltage. If acceptable to the connected

 

 

equipment, reduce the UPS sensitivity (see User Configurable Items).

 

 

 

ON-LINE LED

 

 

 

 

 

There is no illumination.

 

The UPS is running on battery, or it must be turned on.

 

 

 

The LED is blinking.

 

The UPS is running an internal self-test.

 

 

 

9

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APC 110 Vac, 120 Vac, 620 VA, 420 VA user manual Replace Battery LED is Illuminated
Page 10 Page 12

620 VA, 420 VA, 110 Vac, 120 Vac specifications

APC (American Power Conversion) is a prominent name in the power management industry, known for its innovative solutions that provide reliable power protection to various electronic devices. Among its range of products, the APC 120 Vac and 110 Vac series, typically offering 420 VA to 620 VA capacity, stand out due to their impressive performance and features tailored to meet the needs of both home and office settings.

The key feature of these APC units is their ability to provide uninterruptible power supply (UPS) for sensitive electronics. By converting incoming power to a stable and consistent voltage, they protect devices from surges, spikes, and other power irregularities that can cause data loss or equipment damage. With a backup power capability, these UPS units ensure that critical hardware like computers, servers, and networking equipment remain operational during outages, allowing users to save their work and shut down systems safely.

The APC units are designed with advanced technology, including line-interactive topology. This technology allows the UPS to provide efficient voltage regulation and can automatically adjust the output voltage, ensuring that connected devices receive optimal power quality. Furthermore, with a fast response time, these units switch to battery mode instantaneously during power disturbances, minimizing any interruption.

In terms of characteristics, these models typically come equipped with multiple outlets, often incorporating surge protection that offers layered protection for connected devices. LCD displays provide real-time information on battery status, load capacity, and estimated runtime, making it easier for users to monitor the system. The compact design allows for flexible placement, whether in a home office or a data center.

Efficiency is another hallmark of the APC series, with energy-saving features that not only help in reducing operating costs but also align with environmental sustainability goals. Many models include user-replaceable batteries, simplifying maintenance and extending the life of the unit.

In summary, APC 120 Vac and 110 Vac UPS units with 420 VA to 620 VA capacity deliver robust power protection through their innovative design and technology. With features focused on reliability, efficiency, and user convenience, they represent a valuable investment for anyone needing uninterrupted power supply for their critical electronic equipment.
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