Roubleshooting - Riello 5KVA Installation And Use Manual

Irregular functioning of the UPS is most often not an indication of a fault but due simply to trivial problems,
minor difficulties or carelessness.
We therefore recommend that you refer to the table below which gives a summary of useful information to
solve the most common problems.
PROBLEM
DISPLAY DOESN'T COME
ON
DISPLAY IS ON BUT THE
LOAD IS NOT POWERED
THE UPS IS OPERATING
FROM BATTERY EVEN
THOUGH THE MAINS
VOLTAGE IS PRESENT
THE UPS DOES NOT
SWITCH ON AND THE
DISPLAY SHOWS ONE OF
THESE CODES: A06, A08
THE DISPLAY SHOWS THE
CODE: A11
POSSIBLE CAUSE
MAIN SWITCH NOT CLOSED
BATTERY FUSE-HOLDER
DISCONNECTING SWITCHES
ARE OPEN
NO CONNECTION TO THE
MAINS LINE
MAINS VOLTAGE DOWN
(BLACK-OUT)
UPSTREAM PROTECTION
TRIGGERED
UPS IS IN STAND-BY
STAND-BY OFF MODE HAS
BEEN SELECTED
NO CONNECTION TO THE
LOAD
UPSTREAM PROTECTION
TRIGGERED
THE INPUT VOLTAGE IS
OUTSIDE THE ALLOWED
TOLERANCE FOR
OPERATION FROM MAINS
THE TEMPERATURE OF THE
UPS IS LOWER THAN 0°C
INPUT RELAY BLOCKED
T

ROUBLESHOOTING

SOLUTION
Ensure that the main switch located on the rear panel is
in position "I".
Check the battery fuses and close the disconnecting
switches.
Check the connection to the mains power.
Check that there is a mains voltage present.
Reset the protection.
WARNING: Check that there is not an overload on the
UPS output.
Press the "ON" button on the front panel so as to power
the loads.
The mode has to be changed.
In STAND-BY OFF (emergency) mode, the loads are
only powered in the event of a black-out.
Check the connection to the load and close the output
disconnecting switch.
Reset the protection.
WARNING: Check that there is no overload in output
to the UPS.
Problem dependent on the mains. Wait for the input
mains to return within tolerance. The UPS will
automatically go back to operation from mains.
Check the temperature of the environment where the
UPS is located; if it is too low, bring it to above the
minimum threshold (0°C).
The fault does not cause any particular malfunctions. If
the problem should occur again on a subsequent start-
up, contact the support service centre.
59