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Troubleshooting
13.0TROUBLESHOOTING
The information below indicates various symptoms a user may encounter in the event the Liebert
1.The Fault indicator will illuminate, indicating the UPS has detected a problem.
2.An alarm will sound, alerting that the UPS requires attention.
3.One or more additional Load Level/Battery Level indicators will be illuminated to provide a diagnostic aid to the operator, as described below:
A B C
AC Input indicator
D E
Fault indicator
Battery indicators
Load Level indicators
Bypass indicator
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| Battery indicator UPS ON indicator | |
Table 3 | Fault indicators | ||
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Indicator status | Diagnosis/Audible alarm | ||
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All indicators | On bypass due to output overload; beep every | ||
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Indicator A |
| On bypass due to overtemperature condition | |
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Indicator B |
| On bypass due to DC bus overvoltage | |
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Indicator C |
| On bypass due to control power supply failure | |
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Indicator D |
| On bypass due to PFC failure | |
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Indicator E |
| On bypass due to inverter failure | |
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Indicators A&B | |||
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Indicators A&C | UPS failed battery test; | ||
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Indicators A&D | L1 to L2 phase angle unacceptable | ||
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Indicators B&C | REPO is currently activated, UPS output cannot be started by any method | ||
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| UPS is OFF due to previous REPO (REPO is no longer activated). Once utility power | |
Indicators B&D | is restored, press the OFF button twice within four seconds (to clear the alarm), then | ||
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| press the ON button to start UPS | |
Indicators C&E | UPS shutdown due to command from communications (RS232 or SNMP); no beep | ||
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Indicators D&E | UPS is OFF due to charger overvoltage; | ||
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AC Input indicator On & | On bypass due to the power module cover plate being removed or the slide bracket | ||
Indicators A&C&E | moved from Manual Bypass switch | ||
AC Input indicator On & | AC input has been applied to start UPS but the batteries are either missing or below | ||
Battery indicator Flashing | the minimal level to allow the UPS to start; continuous audible alarm | ||
Bypass indicator Flashing | Bypass voltage is present, but is disabled for use because the voltage or frequency is | ||
outside acceptable limits | |||
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