- 106 -
TROUBLESHOOTING GUIDE
Irregular operation of the CPS is very often not an indication of a fault but is simply caused by simple problems or
distractions.
We therefore recommend you consult the table here below, which provides some information that will help you to solve
the most common problems.
WARNING: the table below frequently recommends the use of the maintenance BYPASS. We remind you that
before restoring the CPS to operation, you must make sure that it is on and not in STAND-BY.
If the CPS is in this latter mode, turn on the CPS by accessing the “SYSTEM ON” menu and wait for the
power-on sequence to be completed before removing the maintenance BYPASS.
For further details read the procedures described in the maintenance BYPASS (SWMB) paragraph.
NOTE: For a detailed explanation of the codes listed in the table, see the “STATUS/ALARM CODES” paragraph.
THE CPS CONNECTED
TO THE MAINS, DOES
NOT SWITCH TO STAND
BY MODE
(THE RED
BLOCK/STAND-BY LED
DOES NOT FLASH, NO
BEEP SOUNDS AND THE
DISPLAY DOES NOT
LIGHT UP)
CONNECTION TO THE INPUT
TERMINAL MISSING
Connect the mains to the terminals following the
indications in the paragraph on Installation.
NEUTRAL CONNECTION
MISSING
The CPS cannot operate without the neutral
connection. WARNING: The absence of this connection
could damage the CPS and the load.
Connect the mains to the terminals following the
indications in the paragraph on Installation.
1/0 SWITCH LOCATED
BEHIND THE DOOR IN 0
POSITION
Set the switch to 1 (if present)
THE SWIN SWITCH LOCATED
BEHIND THE DOOR IS OPEN
MAINS POWER FAILURE
(BLACKOUT)
Check that mains power is restored and if necessary,
switch on the batteries to power the load.
INTERVENTION OF
CPSTREAM PROTECTION
DEVICE
Restore the protection.
WARNING: check that there is no overload or short
circuit on the CPS output.
NO POWER REACHES
THE LOAD
CONNECTION TO THE
OUTPUT TERMINALS
MISSING
Connect the load to the terminals
THE SWOUT SWITCH
LOCATED BEHIND THE DOOR
IS OPEN
THE CPS IS IN STAND-BY
MODE
Run the start-up sequence
STAND-BY OFF MODE HAS
BEEN SELECTED
Change the operating mode: STAND-BY OFF
(emergency) mode is used to power the loads only
during blackouts.
MALFUNCTION OF THE CPS
AND AUTOMATIC BYPASS
OUT OF USE
Insert the maintenance bypass (SWMB) and contact
the nearest service centre.
THE CPS OPERATES
OFF THE BATTERIES
EVEN THOUGH MAINS
POWER IS PRESENT
INTERVENTION OF THE
UPSTREAM PROTECTION
DEVICE
Restore the protection.
WARNING: check that there is no overload or short
circuit on the CPS output.
THE INPUT VOLTAGE IS
OUTSIDE THE ACCEPTED
OPERATING VALUES FOR
MAINS POWER
Problem caused by mains power. Wait until the input
voltage falls within the tolerance values. The CPS will
automatically switch over to mains power.