PROBLEM
POSSIBLE CAUSE
SOLUTION
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A13, A14, A15
PROTECTION DEVICE
UPSTREAM FROM THE
BYPASS LINE OPEN (ONLY IF
BYPASS IS SEPARATE)
Restore the protection device upstream. WARNING:
check that there is no overload or short circuit at the
output of the UPS
BYPASS ISOLATOR OPEN
(SWBYP ONLY IF BYPASS IS
SEPARATE)
Close the isolator located behind the door
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
F19, F20
BATTERY CHARGER FAULT
Open the battery fuse holders (SWBATT) and insert the
maintenance bypass (SWMB), turn the UPS off
completely. Turn the UPS back on and if the problem
persists, contact the nearest service centre
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A26, A27
BATTERY FUSES BLOWN OR
FUSE HOLDER ISOLATORS
OPEN
Replace the fuses or close the isolators (SWBATT).
WARNING: if necessary, we recommend fuses be
replaced with others of the same type (see UPS internal
protections)
THE DISPLAY SHOWS
THE CODE S06
THE BATTERIES ARE
DISCHARGED; THE UPS
WAITS FOR THE BATTERY
VOLTAGE TO EXCEED THE
SET THRESHOLD
Wait for the batteries to recharge or force startup from
the “SYSTEM ON” menu
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
F06, F07, F08
INPUT RELAY LOCKED
Activate the maintenance bypass (SWMB), switch off
the UPS, open the SWIN and contact the nearest
service centre.
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
L01, L10, L38, L39, L40,
L41
FAULT IN:
TEMPERATURE
PROBE OR UPS
COOLING SYSTEM
MAIN AUXILIARY
POWER SUPPLY
STATIC BYPASS
SWITCH
Activate the maintenance bypass (SWMB), turn the
UPS off and back on again. Exclude the maintenance
bypass. If the problem persists, contact the nearest
service centre
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
A22, A23, A24, F23, L23,
L24, L25
THE LOAD APPLIED TO THE
UPS IS TOO HIGH
Reduce the load to below the 100% threshold (or user
threshold for the code A22, A23 or A24)
THE DISPLAY SHOWS
ONE OR MORE OF THE
FOLLOWING CODES:
L26, L27, L28
SHORT CIRCUIT AT OUTPUT
Switch off the UPS.
Disconnect all the devices connected to the phase
concerned by the short circuit.
Turn the UPS back on.
Reconnect the devices one by one until the fault is
identified.
