Salicru UPS SLC TWIN PRO series User Manual - page 27
27
SALICRU
7.2.1. Troubleshooting guide. Warning
indications.
If the UPS doesn’t work properly, before calling S.S.T. try to
resolve the problem using the information in the following
table:
Problem
Possible cause
Solution
No warning indications, although the UPS is
connected to mains.
No input voltage.
Check the UPS power cord, the wall outlet and installation wiring.
Check the circuit breaker switch of the distribution panel is turned
«
ON
»
.
The screen of LCD panel shows the code
«
1
»
,
although there is mains.
Inverter is not started up.
Press the key
«
ON
»
for more than 1 second.
The screen of the LCD panel shows the code
«
3
»
and the acoustic alarm beeps every 4
seconds.
Mains has failed or mains voltage and/
or frequency are out of range. It is not
connected to the wall outlet or the circuit
breaker switch of the distribution panel has
been tripped.
Loads are supplied on battery mode.
Check that:
The UPS has input voltage and the values of the voltage and
frequency are correct.
It is connected to the wall outlet and the protection of the distribution
panel has not tripped.
Back up time is reduced as regards to the
nominal.
Batteries are not completely charged or
some of them are damaged.
Charge the batteries for 5 - 8 hours as minimum after checking the
capacity. If the problem persists, consult with the S.T.S..
Fan fault.
Wrong fan.
Check if the fan is working properly.
Battery overvoltage.
Battery is over charged.
Automatic transfer of the equipment to battery mode and return back to
line mode when AC mains conditions and batteries are normal.
Low battery.
Battery voltage is too low.
When the acoustic alarm beeps every second, it means the battery is at
the end of back up time. Shutdown the loads, in short the UPS will break
the output voltage so the load/s will not be supplied too.
Charger fault.
Charger is faulty.
Contact with the S.T.S..
High temperature on DC/DC converter.
Internal UPS temperature is too high.
Check the UPS cooling (grids are blocked, fan operating); check the
ambient temperature.
High temperature on inverter.
Internal UPS temperature is too high.
Check the UPS cooling (grids are blocked, fan operating); check the
ambient temperature.
High ambient temperature.
Room ambient temperature is too high.
Check the correct cooling of the location of the equipment.
High input voltage.
AC input voltage is too high (out of range).
Automatic transfer to battery mode and the return back to line mode
when the AC mains conditions are inside the preset range of the UPS.
Battery open.
Battery set is wrong connected.
Make a battery test to confirm it. Check that the battery set is
connected to the UPS. In B1 and/or B0 equipments check the battery
switch si turned
«
ON
»
.
Overload.
Overload
Check the loads and shutdown the non-critical loads (printers,
scanner,... ). Check , i.e.: if there is any damaged load with a short-
circuit.
Wiring fault.
Input phase and neutral wires are swapped.
Swap the input connection.
EPO activated.
EPO function is enabled.
Deactivate the EPO.
Bus fault.
UPS internal fault.
Contact with the S.T.S..
Inverter fault.
UPS internal fault.
Contact with the S.T.S..
Overtemperature fault.
Overtemperature.
Check the UPS cooling (grids blocked, fan operating); check the
ambient temperature.
Inverter short-circuit.
Short-circuited output.
Remove all the loads. Shutdown the UPS and check if the UPS otuput
and load/s are short-circuited. Make sure that the short-circuit has
been cancelled and the UPS doesn't have any internal fault before
starting up the equipment again.
Bus short-circuit
UPS internal fault.
Contact with the S.T.S..
Table 7.
Troubleshooting guide. Other circumstances or conditions.