10Troubleshooting and Fault Rectification

If error messages are displayed, please refer to the following table in order to localise the fault that has occurred and to find information about what measures to take to rectify the fault. If you cannot resolve the problem(s), please contact the Service Center (see page 5 "Hotline").

1.Check whether the UPS connection, and specifically the mains connection, has been made correctly.

2.Check whether the input voltage has been applied correctly (check for phase(s) connected to the neutral conductor and for the phase sequence, if appropriate).

3.Check the connection of the battery system (polarity and nominal voltage).

4.Make a note of the status of the unit when the fault occurred (LC display) and the error code number that is displayed.

Overview of fault messages

PROBLEM

POSSIBLE CAUSE

SOLUTION

 

 

 

 

Overload in normal / bypass or battery

Reduce the load.

 

operation

 

 

 

 

 

Error/fault LED lights up, periodic

Applied mains not in tolerance range

Check whether input cabling and UPS

warning signals

input voltage are normal.

 

 

 

 

 

 

Check whether the voltage of the battery

 

Battery system faulty / not connected

system is correct and that the battery fuse-

 

 

switch disconnector is made.

 

 

 

Error/fault LED lights up,

UPS fault

 

continuous warning signal

 

 

 

 

 

Contact the Customer Service Center.

Battery discharge time is 1/3 shorter

Battery system aged/reached end of useful

life

 

compared to 1sttime

 

 

 

Charging error

 

 

 

 

 

LCD displays that data cable is not

Make sure that the communication module

LC display dark orfaulty

has been installed correctly; check both

 

attached correctly (?)

plugs of the ribbon cable for the LC

 

 

display are connected correctly.

 

 

 

CompuWatch or SNMP(pro) do

Software status of CompuWatch or

Download the latest software /

not detect the PROTECT 1.M >>

firmware of SNMP(pro) card outmoded;

firmware from the AEG homepage.

No communication

error in computer configuration

Check the communication cable.

 

 

 

The LC display does not display

Modules, housing or units are not

Pull the module out and re-insert it into the

any inserted UPS modules

connected correctly.

slot (click!) or use a different slot.

 

 

 

Mains power is connected but the

Mains not in tolerance; phase loss or

Check the mains voltage and UPS

possible phase sequence error; cover

connection; replace cover of bypass

UPS does not start operating.

removed from bypass switch.

switch if removed.

 

 

 

 

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