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51031604EN/AA - Page 21
Troubleshooting requiring MGE UPS SYSTEMS after-sales support
4. Maintenance
4.1 Troubleshooting
Indication
LED 13 flashes and the
buzzer sounds
continuously.
Signification
UPS electronics have detected a UPS fault.
Depending on the UPS personalisation parameters
(see section 3.4), there are two possibilities:
◗ the equipment connected to the UPS continues to be
supplied, but directly from the AC-power source (via
the automatic bypass (LED 20 ON);
◗ the connected equipment is no longer supplied.
The equipment connected to the UPS is no
longer protected.
Correction
Call the after-sales support
department.
Indication
LED 12 flashes and the
buzzer beeps.
LED 14 flashes.
Signification
UPS overload. Overload is too long or too high.
The buzzer sounds continuously.
◗ If AC power is present and within tolerances, the UPS
goes to bypass mode (supply directly by the AC-power
source). LED 20 flashes.
◗ If AC power is not present or not within tolerances,
the connected applications are no longer supplied.
A battery fault was detected during the automatic
battery test.
Correction
Check the power drawn by the
equipment and disconnect any non-
priority devices.
◗ Connect that the battery connector
is fully pushed in.
◗ Replace battery module (see the
Maintenance section).
If any of LEDs 12 , 13 or 14 flash, there is a operating anomaly or an alarm.
If a LED flashes, the bargraph data is no longer displayed.
Troubleshooting not requiring MGE UPS SYSTEMS after-sales support