Eaton EX EXB 1000 - 5 Maintenance; Troubleshooting

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.
Display Description Corrective Action
1
The UPS does not start, the
alphanumeric display indicates:
COLD START NOK CHECK AC
WIRING
The AC input power is not con-
nected or is connected to the
UPS output.
Check the UPS is correctly connect-
ed to the AC input power.
2
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
Phase inversion on AC input
power. The UPS does not start.
w In an earthed-neutral system, to
correct the wiring, call an electrician
to modify the connections.
w For all other types of system, dis-
able the detection function.
3
LED (22) is ON, the alphanu-
meric display indicates: NO
BATTERY CHECK CONNECTION
The battery is incorrectly
connected.
Check battery connections (see
Section 5.2, Battery-Module
Replacement).
4
LED (22) is ON, the alpha-
numeric display indicates:
BATTERY FAULT SERV
REQUIRED
A fault is detected on the bat-
tery.
Replace the battery (see Section 5.2,
Battery-Module Replacement). Call
the after-sales support
5
LED (21) is ON, the alpha-
numeric display indicates:
OVERLOAD ALARM REDUCE
LOAD
The load level exceeds the
programmed overload level or
UPS capacity.
Check the power drawn by the con-
nected devices and disconnect any
non-priority devices. Check the pro-
grammed overload level.
6
LED (22) is ON, the alphanu-
meric display indicates: LOAD
UNPROTECTED OUTPUT
OVERLOAD
The UPS is overloaded. Devices
connected to the UPS are fed
directly by the electrical net-
work via the By-pass.
Check the power drawn by the con-
nected devices and disconnect any
non-priority devices.
7
LED (22) is ON, the alpha-
numeric display indicates:
REDUCE LOAD RESTART UPS
After repetitive overloads, the
UPS is locked in the By-pass
position. Devices connected to
the UPS are fed directly by the
electrical network.
Check the power drawn by the con-
nected devices and disconnect any
non-priority devices. Shut down and
restart the UPS to return to normal
operation.
8
LED (22) is ON, the alpha-
numeric display indicates:
OVERLOAD FAULT REDUCE
LOAD
The UPS shut down automati-
cally because of overload at the
UPS output.
Check the power drawn by the con-
nected devices and disconnect any
non-priority devices.
9
LED (22) is ON, the alpha-
numeric display indicates:
LOAD SHORT-CIRCUIT CHECK
WIRING
The UPS shut down automati-
cally because of a short-circuit
at the UPS output.
Check the installation at the UPS
output (wiring, fault equipment).
10
LED (22) is ON, the alpha-
numeric display indicates:
INTERNAL FAULT SERV
REQUIRED
A UPS internal fault has
occurred. There are two pos-
sible situations:
w The load is still supplied, but
directly with AC power via the
bypass,
w The load is no longer sup-
plied.
Call the after-sales support depart-
ment.
11
The alphanumeric display indi-
cates: REMOTE POWER OFF
RPO
Switching of the Remote Power
Off (RPO) has led to the shut
down of the UPS.
Replace the contact in the normal
position, and press the ON/OFF but-
ton to restart.
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