Troubleshooting

Table 2

Troubleshooting chart

 

 

 

 

 

 

Problem

Cause

Solution

 

 

 

 

 

 

 

Check the circuit protector on the rear of the UPS.

 

 

 

If it is tripped, reset it and restart the UPS. For

 

 

Short circuit

further help, contact your local dealer, Liebert

UPS will not start

 

representative or the Liebert Worldwide Support

 

 

 

Group.

 

 

Battery disconnected or is

Check for proper connection of battery or

 

 

completely discharged

batteries.

 

 

UPS not plugged in

Plug in the power cord securely.

 

 

 

 

 

 

Circuit protector tripped

Reset the circuit protector and restart the UPS.

 

 

 

 

UPS starts on battery, but will not

 

Wait until the voltage rises to an appropriate level

Input voltage below threshold

or have the mains power checked by a qualified

switch to AC

 

electrician.

 

 

 

 

 

 

 

Wait until voltage lowers to an appropriate level

 

 

AC overvoltage

or have the mains power checked by a qualified

 

 

 

electrician.

 

 

 

Check load level display and remove non-

 

 

Load exceeded UPS capacity

essential loads. Recalculate the load and reduce

 

 

(110%), All Load Level Indicators

number of loads connected to UPS - the total

 

 

are illuminated; continuous beep

wattage of your equipment must not exceed the

 

 

 

capacity of the UPS.

 

 

Over temperature shutdown, Over

Make sure that the UPS is operating in 0°C to

 

 

Temp Indicator lit; continuous

40°C (32°F to 104°F) and that it has adequate

 

 

beep

ventilation.

UPS shuts down

MultiLink shutdown

Consult the MultiLink user manual or contact your

LAN administrator.

 

 

 

 

 

Internal UPS fault, Fault Indicator

Contact your local dealer, Liebert representative

 

 

Lit; continuous beep

or the Liebert Worldwide Support Group.

 

 

 

Your UPS has received a signal or command

 

 

UPS shutdown due to a command

from the attached computer. If this was

 

 

from the communications port(s),

inadvertent, ensure the communication cable

 

 

Load Level 0-25% Indicator

used is correct for your system. For assistance,

 

 

illuminated

contact your local dealer, Liebert representative

 

 

 

or the Liebert Worldwide Support Group.

 

 

 

Check battery connections,

All Battery Level Indicators

UPS is unable to perform manual

completely power down and restart UPS.

or remote battery test; beep every

NOTE: If the battery circuit opens while the UPS

flashing

 

 

half second for five seconds

is running, it will be detected when the next

 

 

 

 

 

battery test is performed.

 

 

 

 

Battery Indicator illuminated

UPS failed battery test

Initiate battery test again.

 

 

Batteries weak

Recharge batteries.

amber; long beep every minute

 

 

 

 

Batteries need to be replaced

Replace batteries.

 

 

 

 

 

 

Over temperature warning; beep

Make sure that the UPS is operating in 0°C to

Over Temp Indicator flashing

40°C (32°F to 104°F) and that it has adequate

every half second

 

 

ventilation.

 

 

 

 

 

 

 

Fault Indicator lit but UPS is On

Fault warning; beep every half

Reset UPS.

second

 

 

 

25

Page 29
Image 29
Liebert PSITM user manual Troubleshooting chart, Problem Cause Solution

PSITM specifications

The Liebert PSITM is an advanced power protection system designed to ensure the reliability and efficiency of critical systems in data centers, industrial applications, and mission-critical environments. As the demand for uninterrupted power supply continues to grow, the Liebert PSI serves as an indispensable asset.

One of the main features of the Liebert PSI is its online double-conversion technology. This method guarantees a continuous supply of clean and stable power to connected loads by converting incoming AC power to DC, then back to AC. This process eliminates power disturbances such as voltage sags, surges, and harmonics, ensuring that sensitive equipment operates without interruption.

In addition to its robust power protection capabilities, the Liebert PSI offers scalable solutions to meet varying power requirements. Ranging from 5 kVA to 40 kVA, it can be configured for single or three-phase operation. This flexibility allows businesses to tailor the system to match their specific needs, whether they are expanding data center operations or simply upgrading existing infrastructure.

Another notable characteristic of the Liebert PSI is its energy efficiency. The unit is designed to operate with a high efficiency of up to 94%, which not only reduces operational costs but also minimizes the environmental impact. Moreover, it features an eco-mode that optimizes energy use during non-critical operations without sacrificing reliability.

The Liebert PSI is equipped with advanced communication and management capabilities. It includes an intuitive LCD display for real-time monitoring, enabling users to access vital information about the unit's performance and status. Additionally, it supports various communication protocols such as SNMP and Modbus, allowing for seamless integration into existing management systems.

Furthermore, the Liebert PSI is designed with an emphasis on modularity, allowing for easy upgrades and maintenance. This modular approach reduces downtime and enhances serviceability, ensuring that the system remains reliable throughout its lifecycle.

In summary, the Liebert PSITM stands out as a comprehensive power protection solution that combines cutting-edge technology, energy efficiency, and user-friendly features. Its commitment to safeguarding critical systems against power disturbances makes it a vital component in the infrastructure of any modern data center or industrial setting.