PRELIMINARY
95
PROBLEM
POSSIBLE CAUSE
SOLUTION
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A39, A40
AND THE RED
“REPLACE BATTERIES”
LED IS ON
THE BATTERIES DID NOT
PASS THE PERIODIC
EFFICIENCY CHECK
It is advisable to replace the UPS batteries, as they are
no longer able to provide adequate backup power to the
load.
Warning: The batteries must be replaced by
qualified staff
§
ENVIRONMENTAL
TEMPERATURE HIGHER
THAN 40°C
§
SOURCES OF HEAT
NEAR THE UPS
§
AIR VENTS OBSTRUCTED
OR TOO NEAR THE WALL
Activate the maintenance bypass (SWMB) without
switching the UPS off, so that the fans will cool the heat
sink faster. Remove the cause of the overheating and
wait until the temperature of the heat sink lowers.
Exclude the maintenance bypass.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
F34, F35, F36, L34, L35,
L36
MALFUNCTION OF THE
TEMPERATURE SENSOR OR
OF THE UPS COOLING
SYSTEM
Insert the maintenance bypass (SWMB) without
switching off the UPS, so that the fans continue to
operate and cool the heat sink faster. Wait until the
temperature of the heat sink lowers. Switch off and
restart the UPS. Exclude the maintenance bypass. If
the problem persists, call the nearest service centre.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
F37, L37
§
ENVIRONMENTAL
TEMPERATURE HIGHER
THAN 40°C
§
SOURCES OF HEAT
NEAR THE UPS
§
AIR VENTS OBSTRUCTED
OR TOO NEAR THE WALL
§
MALFUNCTION OF THE
TEMPERATURE SENSOR
OF OT THE BATTERY
CHARGER COOLING
SYSTEM
Remove the cause of the overheating.
Open the fuse holder switches (SWBATT) and wait until
the temperature of the battery charger heat sink lowers.
Close the battery fuse holders. If the problem persists,
contact the nearest service centre.
WARNING: never open the SWBATT fuse holders
when the batteries are operating.
NOTHING APPEARS ON
THE DISPLAY OR IT
SHOWS WRONG
INFORMATION
POWER SUPPLY PROBLEMS
FOR THE DISPLAY
Activate the maintenance bypass (SWMB) without
opening the INPUT/OUTPUT switches.
Turn off the 1/0 switch located behind the door, wait for
a few seconds and then turn it on again.
Restart the UPS. Exclude the maintenance bypass. If
the problem persists, contact the nearest service
centre.
THE DISPLAY AND THE
FANS ARE OFF BUT THE
LOAD IS POWERED
DUE TO A MALFUNCTION OF
THE AUXILIARIES, THE UPS IS
OPERATING ON BYPASS
SUPPORTED BY THE
REDUNDANT POWER SUPPLY
UNIT.
Activate the maintenance bypass (SWMB). Set the 1/0
switch to “0”. Wait for a few seconds. Return the 1/0
switch to “1”. Try to restart the UPS.
If the display does not light up or the sequence fails,
contact the nearest service centre, leaving the UPS in
manual bypass mode.
PRELIMINARY
96
S
TATUS
/
ALARM
C
ODES
Using a sophisticated self-diagnostic system, the UPS can check and indicate on the display panel its status and any errors
and/or faults that have occurred during its operation. When a problem arises, the UPS signals the event by showing the code
and corresponding type of alarm on the display.
Ø
Status:
indicates the current status of the UPS.
CODE
DESCRIPTION
S01
Precharging
S02
Load not powered (stand-by status)
S03
Power-on phase
S04
Load powered by bypass line
S05
Load powered by inverter
S06
Battery operation
S07
Waiting for batteries to recharge
S08
Economy mode enabled
S09
Ready for power on
S10
UPS locked – load not powered
S11
UPS locked – load on bypass
S12
BOOST stage or battery-charger locked – load not powered
Ø
Command:
indicates that a command has been activated.
CODE
DESCRIPTION
C01
Remote power-off command
C02
Remote load on bypass command
C03
Remote power-on command
C04
Battery test running
C05
Manual bypass command
C06
Emergency power-off command
C07
Remote battery charger power-off command
C08
Load on bypass command
Ø
Warning:
messages that refer to a specific configuration or operation of the UPS.
CODE
DESCRIPTION
W01
Battery low warning
W02
Programmed power-off enabled
W03
Programmed power-off command imminent
W04
Bypass disabled
W05
Synchronization disabled (UPS in Free running mode)