Salicru UPS SLC TWIN PRO series, User Manual

36

8.2.1.  Troubleshooting guide. Warning 

indications.

Indication in the LCD

Possible cause

Solution

TWIN PRO 4-10 kVA TWIN/3 PRO 8-20 kVA

Read EEPROM Error

-

UPS internal fault

Consult with the S.T.S.

Emergency Power Off EPO Active

Alarm code:71

EPO connector is open

Check the status of the EPO connector

On Maintain Bypass

On Maintain Bypass

Alarm code:72

Manual bypass switch on BYPASS position 

and/or switch protection cover removed 

Check the position of the switch and/or the location of the protection 

cover

Site Wiring Fault

-

Phase and neutral wires from input and 

output are reversed

Swap the phase and neutral connection

Battery Disconnected Battery Disconnect

Alarm code:11

Battery set is not properly connected

Battery test to be confirmed

Check that the battery cabinet is connected (models (B0) and (B1))

Check the battery switch is on "On" position

Low Battery Warning

Battery low

Alarm code:12

Low battery voltage

When the alarm beeps every 1 sec., means end of back up time

Output Overload

Output Overload

Alarm code:41

Output overload

Check the load and remove the non-critical ones

Check if any load is faulty or damaged

Fan Failure

Fan Failure

Alarm code:84

Faulty fan/s

Check that the fan/s are working properly

Charger Failure

Charger Fail

Alarm code:15

Battery charging fault

Consult with the S.T.S.

Battery DC Over 

Voltage

-

Battery voltage is higher than the normal

Check if the battery quantity is the suitable one

Over Charge

Over Charge

Alarm code:14

Battery overcharged

The UPS transfers to "Battery mode" automatically and later on it 

checks if the battery voltage and mains are OK (corrects), the UPS 

returns back to "Normal mode" automatically again

Model Pin Error

Model Pin Error

Alarm code:92

UPS internal fault

Consult with the S.T.S.

Ambient Over 

Temperature

-

Ambient temperature is too high

Check the ambient cooling

Heatsink Over 

Temperature Warning

Heatsink Over 

Temperature

Alarm code:86

The temperature inside the equipment is 

too high

Check the UPS cooling and the ambient temperature of the room

NTC abnormal

-

UPS internal fault

Consult with the S.T.S.

Communication cable 

male disconnected

Para cable Male Loss 

Alarm code:E3

Parallel bus cable is disconnected

Check the parallel bus cable

Communication cable 

female disconnected

Para cable Female 

Loss 

Alarm code:E4

Parallel bus cable is disconnected

Check the parallel bus cable

Parallel Battery 

Connection Different

Para Bat Differ

Alarm code:E6

The battery set is disconnected from the 

UPS

Check that all battery modules are connected

Parallel input Different

-

Any UPS input is disconnected

Check the connection of the room and building and the input connection

Make sure that the input switch is turned "On"

Check that all UPSs are connected to the same mains power supply

-

Para Byp Differ

Alarm code:E8

Switch (M2) from bypass line of any 

equipment is disconnected (this switch is not 

available in models TWIN/3 PRO 8-10 kVA)

Check the connection of the room and building and the input connection

Make sure that the bypass switch (M2) is turned "On"

Check that all UPSs are connected to the same mains power supply

-

Para Line Differ

Alarm code:E7

Switch (M1) from input line of any equipment 

is disconnected 

Check the connection of the room and building and the input connection

Make sure that the input switch (M1) is turned "On"

Check that all UPSs are connected to the same mains power supply

Parallel Power 

strategy setting 

different

Para Work Mode 

Differ

Alarm code:E9

There are different structure configurations 

set in the parallel system

The UPSs with different configuration do not accept the paralleling (i.e.: 

one on line mode and the other one on converter mode)

Parallel rated power 

capacity setting 

different

Para Rate Differ

Alarm code:EA

There are different UPSs in the parallel 

system

Equipments with different power rate do not accept the parallel (i.e.: one 

of 8 kVA and another one of 10 kVA)

Parallel in HE mode

ECO In Para

Alarm code:EB

ECO function is activated in the parallel 

system

ECO function is not allowed in a parallel system

Parallel load 

unbalance

-

UPS internal fault

Consult with the S.T.S.

Table 10. 

Troubleshooting guide. Warning indications.

USER MANUAL