Troubleshooting

7.0TROUBLESHOOTING

This section indicates various UPS symptoms a user may encounter and troubleshooting steps in the event the UPS develops a problem. Use the following information to determine whether external factors caused the problem and how to remedy the situation.

7.1UPS Symptoms

The following symptoms indicate the Liebert® GXT3™ has malfunctions.

•The related indicators will illuminate, indicating the UPS detected a problem.

•An alarm will sound, indicating that the UPS requires attention.

7.1.1Indicators

In addition to the fault indicator being illuminated, one or more of LED segments of battery level indicator will also be illuminated to provide a diagnostic aid to the user, as shown in Figure 25. The descriptions are listed in Table 8.

Figure 25 Battery level indicator

 

 

 

 

 

 

 

 

 

 

 

 

A

B

C

D

E

 

Table 8

Indicator descriptions

 

 

 

 

 

 

 

 

 

 

 

 

Indicator

Diagnosis/Audible alarm

 

 

 

 

A - E

 

On bypass from output overload (half-second beep every half-second)

 

 

 

 

 

 

A

 

On bypass due to overtemperature condition (1-second beep every 4 seconds)

 

 

 

 

 

 

B

 

On bypass due to DC bus overvoltage (1-second beep every 4 seconds)

 

 

 

 

 

 

C

 

On bypass due to DC/DC power supply failure (1-second beep every 4 seconds)

 

 

 

 

 

 

D

 

On bypass due to PFC failure (1-second beep every 4 seconds)

 

 

 

 

 

 

E

 

On bypass due to inverter failure (1-second beep every 4 seconds)

 

 

 

 

 

 

A&B

 

UPS Failure (includes dual-fan failure, single-fan failure under certain conditions and battery

 

 

charger failure) and continuous alarm

 

 

 

A&C

 

UPS failed battery test (2-second beep every60 seconds)

 

 

 

 

 

 

A&E

 

Bypass feedback (1-second beep every 4 seconds)

 

 

 

 

 

 

 

 

 

 

 

B&E

 

Short circuit on the output

 

 

 

 

 

 

 

 

 

 

 

C&E

 

UPS shutdown by command from communication (USB port or Liebert IntelliSlot™ port) (no

 

 

audible)

 

 

 

 

 

Utility LED flash

L-N reverse

 

 

 

 

 

 

 

 

 

 

Battery Indicator

Battery not connected (continuous horn); check battery connection, power down and restart

Flashing

UPS

 

 

 

 

 

Bypass Indicator

Utility power voltage or frequency is out of tolerance; bypass is unavailable

Flashing

 

 

 

 

 

 

 

Indicators A - E are shown in Figure 25.

If the UPS experiences an overload, the UPS will transfer from bypass back to inverter approximately 5 minutes after the overload ends.

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Emerson 208V, GXT3 user manual UPS Symptoms, Troubleshooting, Indicators, Indicator Diagnosis/Audible alarm
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GXT3, 208V specifications

The Emerson 10-30 kVA, 208V uninterruptible power supply (UPS) solution is a robust system designed to provide reliable power protection for critical applications in commercial and industrial settings. This UPS is ideal for safeguarding IT equipment, communication systems, and other sensitive electronics against power disturbances and interruptions.

One of the standout features of the Emerson 10-30 kVA UPS is its modular design, allowing for flexibility and scalability. This means that as the power needs of a facility grow, the UPS can be easily expanded without requiring a complete system overhaul. This modularity contributes to a more efficient use of resources and minimizes operational costs.

The UPS also incorporates advanced technologies such as double-conversion online architecture, which provides the highest level of power quality. This technology ensures that the output power is consistently clean and stable, effectively eliminating harmful voltage fluctuations and frequency variations. Consequently, connected load receives a pure sine wave output, preventing potential damage or operational issues with sensitive equipment.

Another key feature is the high efficiency rating of the Emerson UPS, which exceeds 95 percent in typical operating conditions. This high efficiency translates to reduced energy costs and a smaller carbon footprint, aligning with modern sustainability goals. The cooling system is designed to be efficient as well, ensuring optimal performance while maintaining a compact footprint.

The user-friendly interface enhances operability, featuring an intuitive LCD display that allows for easy monitoring of critical power parameters. Users can access real-time data related to battery health, load levels, and operational status, which aids in effective management of the power supply.

Battery management is another critical aspect of the Emerson UPS. It employs advanced battery management technologies to ensure optimal battery life and performance. Features such as intelligent battery testing and monitoring help predict potential battery failures before they occur, allowing for proactive maintenance and minimized downtime.

In summary, the Emerson 10-30 kVA, 208V UPS offers a combination of modularity, high efficiency, advanced technologies, and effective power management features that cater to the demanding needs of critical applications. With its reliable performance and user-friendly operation, this UPS solution is an excellent choice for organizations looking to protect their valuable equipment from power disturbances.
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