GE Industrial Solutions LP11 924 Series 6 & 10 kVA - Manual (Page 48)

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OPM_LPU_11U_6K0_10K_1US_V010.Doc 47 User manual LP11 924 6 & 10 kVA UPS 1.0
9 - TROUBLESHOOTING
If a malfunction occurs, first check external factors (e.g. connections, temperature, humidity or load) to determine
whether the problem is caused by the unit itself or by its environment. Subsequently check whether the
breakers/switches on the rear panel (fig. 19, 7-8-9) are in ‘on’ position. Always check these external factors before
concluding that your UPS is faulty.
The front screen will indicate the problem and solution (if the problem is due to environmental circumstances). If the
solution is not shown on the screen, please contact your dealer.
During the self-test, performed immediately after start-up, the UPS may detect a system failure. In this case a message is
displayed for 30 seconds before the self-test is repeated. If the faulty situation persists, please contact your dealer.
(One of) the following messages can be displayed:
One or more voltages of the internal power supply is (are) outside tolerance. Please
contact your dealer. SELFTEST FAILURE
PCB POWER SUPPLY
An external AC voltage (not the UPSs output voltage) was detected on the output
terminals. Please contact your dealer.
SELFTEST FAILURE
AC ON INPUT
The internal battery fuse is defective. Please contact your dealer.
SELFTEST FAILURE
INT. BATTERY FUSE
The external battery cabinet circuit breaker is in 'the off' position. Please switch it to
'the on' position.. SELFTEST FAILURE
EXT. BATTERY FUSE
Malfunction of the battery charger. Please contact your dealer.
SELFTEST FAILURE
BATTERY CHARGER
Malfunction of the input circuit: voltage delivered is too high. Please contact your
dealer.
SELFTEST FAILURE
Uic TOO HIGH
The temperature of (one of) the components is (still) too high. See section 5.4.2.
SELFTEST FAILURE
TEMP TOO HIGH
The battery voltage is too low to allow start-up. Wait for a few hours, leave the UPS
switched on.* SELFTEST FAILURE
Uba TOO LOW
Malfunction of input circuit: voltage delivered is too low. The batteries may be faulty or
depleted. Wait for a few hours, leave the UPS switched on.*
SELFTEST FAILURE
Uic TOO LOW
Hardware output voltage detection 'Q4' is active. Please contact your dealer.
SELFTEST FAILURE
Q4 NOT OK
* If absence of input power (utility failure, maintenance work) is expected to last longer than a few hours, switch off the
UPS to save battery power.
CAUTION
If the UPS input power is absent for several days and the UPS remains on under no-load conditions, the
batteries can be discharged very deeply, resulting in a shortened battery life time.