Troubleshooting 55
Off
ery
capacity
<25%
ery
capacity
>25%
ery
capacity
>50%
ery
capacity
>75%
Overload condition (on page
58)—UPS power capacity is
exceeded while on battery
with no other faults
Off
Overload condition (on page
58)—UPS power capacity is
exceeded while on battery
with overtemperature fault
Flashing
Checksum failure error (on
page 58)
* This LED can be in any state.
For the location of individual LEDs, see "UPS front panel LED indicators (on page 7)."
UPS is in Auto-Bypass mode
The UPS transfers from Operate mode (on page 40) to Auto-Bypass when one of the following fault
conditions is detected:
• Inverter AC over voltage
• Inverter AC under voltage
• Rectifier input over current
• Inverter output over current
• Inverter fault
• Heat sink over temperature
• Fan failure
• Overload
The load is supported, but not protected while in Auto-Bypass mode.
Action:
1. If power management software is being used, check the log files to obtain specific error information
to help identify the problem.
For more information about the causes of a general fault condition, see the HPE Power Manager
user guide available for download from the Hewlett Packard Enterprise website
(http://www.hpe.com/info/rackandpower).
2. Verify that no blockage of airflow to the front bezel and rear panel exists.
UPS is in Converter Off mode
Fault conditions cause the UPS to transfer to Converter Off mode from Standby mode (on page 40) only.
If the UPS is powering the load, fault conditions cause the UPS to transfer to Auto-Bypass mode instead.
If a fault condition exist and the UPS is running in Auto-Bypass mode (on page 41), press the Off button to
transfer the UPS to Converter Off mode.
The load is not supported while in Converter Off mode.
The following fault conditions trigger Converter Off mode:
• Inverter AC over voltage
• Inverter AC under voltage
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