Maintenance; Troubleshooting - MGE UPS Systems Pulsar EXB 1000 - 1500 RT Installation And User Manual

5. Maintenance

5.1 Troubleshooting

If LED (21) or (22) is ON, a fault or an alarm has occurred.
Use the escape button (24) to stop the audio alarm.
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Indication
The UPS does not start,
the alphanumeric display indicates:
COLD START NOK
CHECK AC WIRING
LED (22) is ON, the SWF LED (11) at
the rear of the UPS is ON.
The alphanumeric display indicates:
SITE WIR. FAULT
CHECK AC WIRING
LED (22) is ON,
the alphanumeric display indicates:
NO BATTERY
CHECK CONNECTION
LED (22) is ON,
the alphanumeric display indicates:
BATTERY FAULT
SERV REQUIRED
LED (21) is ON,
the alphanumeric display indicates:
OVERLOAD ALARM
REDUCE LOAD
LED (22) is ON,
the alphanumeric display indicates:
LOAD UNPROTECTED
OUTPUT OVERLOAD
LED (22) is ON,
the alphanumeric display indicates:
REDUCE LOAD
RESTART UPS
LED (22) is ON,
the alphanumeric display indicates:
OVERLOAD FAULT
REDUCE LOAD
LED (22) is ON,
the alphanumeric display indicates:
LOAD SHORT-CIRCU
CHECK WIRING
LED (22) is ON,
the alphanumeric display indicates:
INTERNAL FAULT
SERV REQUIRED
The alphanumeric display indicates:
REMOTE POWER OFF
RPO
Diagnostic
The AC input power is not
connected or is connected to the
UPS output.
Phase inversion on AC input power.
The UPS does not start.
The battery is incorrectly
connected.
A fault is detected on the battery.
The load level exceeds the
programmed overload level or UPS
capacity.
The UPS is overloaded. Devices
connected to the UPS are fed
directly by the electrical network via
the By-pass.
After repetitive overloads, the UPS
is locked in the By-pass position.
Devices connected to the UPS are
fed directly by the electrical
network.
The UPS shut down automatically
because of overload at the UPS
output.
The UPS shut down automatically
because of a short-circuit at the
UPS output.
A UPS internal fault has occurred.
There are two possible situations:
◗ the load is still supplied, but
directly with AC power via the
bypass,
◗ the load is no longer supplied.
Switching of the Remote Power Off
(RPO) has led to the shut down of
the UPS.
Correction
Check the UPS is correctly
connected to the AC input power.
◗ In an earthed-neutral system, to
correct the wiring, disconnect and
turn the AC-power outlet 180° (DIN-
SCHUKO type) or call an electrician
to modify the connections.
◗ For all other types of system,
disable the detection function.
Check battery connections (see
section 5.2, Battery-module
replacement).
Replace the battery (see section 5.2,
Battery-module replacement).
Call the after-sales support
department.
Check the power drawn by the
connected devices and disconnect
any non-priority devices. Check the
programmed overload level.
Check the power drawn by the
connected devices and disconnect
any non-priority devices.
Check the power drawn by the
connected devices and disconnect
any non-priority devices.
Shut down and restart the UPS to
return to normal operation.
Check the power drawn by the
connected devices and disconnect
any non-priority devices.
Check the installation at the UPS
output (wiring, fault equipment).
Call the after-sales support
department.
Replace the contact in the normal
position, and press the ON/OFF
button to restart.