PROBLEM
POSSIBLE CAUSE
SOLUTION
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A13
OPEN THE PROTECTION
UPSTREAM OF THE BYPASS
(ONLY FOR SEPARATE
BYPASS)
Restore the upstream protection
WARNING: check that there is no overload or short
circuit on the UPS output.
BYPASS SWITCH SWBYP
OPEN (ONLY FOR SEPARATE
BYPASS)
Close the switch located behind the door.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
F19, F20
MALFUNCTION OF THE
BATTERY CHARGER
Open the battery fuse holders (SWBATT), insert the
maintenance bypass (SWMB) and shut down the UPS
completely. Switch on again and if the fault persists,
contact the nearest technical support centre.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A26, A27
BATTERY FUSES
INTERRUPTED OR FUSE
HOLDER SWITCHES OPEN
Replace the fuses of close the SWBATT switches.
WARNING: whenever necessary, it is advisable to
replace fuses with others of the same type (see the
section “UPS internal protections)
THE DISPLAY SHOWS
THE CODE S07
THE BATTERIES ARE
DISCHARGED. THE UPS
WAITS UNTIL THE BATTERY
VOLTAGE RISES ABOVE THE
ESTABLISHED THRESHOLD
VALUE
Wait for the batteries to recharge or manually force start
up from the “START UP” menu.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
F06, F07, F08
INPUT RELAY BLOCKED
Activate the maintenance bypass (SWMB), switch off
the UPS, open SWIN and contact the nearest service
centre.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
L01, L10, L38, L39, L40,
L41
MALFUNCTIONING OF THE:
TEMPERATURE
SENSOR OR THE UPS
COOLING SYSTEM
MAIN AUXILIARY
POWER SUPPLY
STATIC BYPASS
SWITCH
Activate the maintenance bypass (SWMB), switch the
UPS off and then on again and exclude the
maintenance bypass. If the problem persists, call the
nearest service centre.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A22, F23, L23
THE LOAD CONNECTED TO
THE UPS IS TOO HIGH
Reduce the load until it falls within the 100% threshold
(or load threshold if code A22 is displayed)
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
L26
OUTPUT SHORT CIRCUIT
Switch the UPS off.
Disconnect all the loads relating to the phases affected
by the short circuit.
Restart the UPS.
Re-connect the loads one at a time in order to identify
the fault.