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4. Maintenance
4.1 Troubleshooting
Indication
LED 12 flashes and the
buzzer beeps.
LED 14 flashes.
The yellow LED ␣ 15.
flashes, the red indicator
light 10 behind the UPS
comes on and the buzzer
sounds continuously.
Signification
UPS overload. Overload is too long or too high.
◗ If AC power is present and within tolerances, the UPS
goes to bypass mode (supply directly by the AC-power
source). LED 20 flashes.
The buzzer beeps every seconds.
◗ If AC power is not present or not within tolerances,
the connected applications are no longer supplied.
The buzzer sounds continuously.
A battery fault was detected during the automatic
battery test.
The function for monitoring the phase and neutral
position of your electrical network has detected a
reversal.
Correction
Check the power drawn by the
equipment and disconnect any non-
priority devices.
◗ Check that the battery connector is
fully pushed in.
◗ Replace battery module (see the
Maintenance section).
Directly earthed neutral type
networks: to correct cabling, unplug
and turn the network socket, of the
DIN-SCHUKO type, by 180 degrees
or contact an electrician to modify
your electrical network.
For all other network types, de-
activate the detection function (this
function is only operational for
directly earthed neutral electrical
networks):
Press for at least 5 seconds the
pushbutton 9 behind the UPS
(UPS stopped and connected to the
network for less than 30 minutes).
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