Ups is in auto-bypass mode – HP Tower Uninterruptible Power System User Manual
Page 56
Troubleshooting 56
Off
On
Off
On—Batt
ery
capacity
<25%
On—Batt
ery
capacity
>25%
On—Batt
ery
capacity
>50%
On—Batt
ery
capacity
>75%
Off
UPS is on battery (on page
)—No utility power
*
*
*
Off
*
*
Flashing *
Overtemperature condition (on
page
Off
Off
On
Flashing Flashing Flashing Flashing Flashing
Internal UPS fault condition (on
Flashing Off
Off
Flashing Flashing Flashing Flashing Flashing
*
Off
*
Off
*
Flashing *
*
Site wiring condition (on page
*
Off
*
On
On
On
On
Flashing
Overload condition (on page
)—UPS power capacity is
exceeded with no other faults
*
Off
*
Off
*
*
*
Flashing
Overload condition (on page
)—UPS power capacity is
exceeded while other faults
exist
Off
On
Off
On—Batt
ery
capacity
<25%
On—Batt
ery
capacity
>25%
On—Batt
ery
capacity
>50%
On—Batt
ery
capacity
>75%
Flashing
Overload condition (on page
)—UPS power capacity is
exceeded while on battery with
no other faults
Off
On
Off
Off
Off
Off
Flashing Flashing
Overload condition (on page
)—UPS power capacity is
exceeded while on battery with
overtemperature fault
Off
Flashing Off
Flashing Flashing Flashing Flashing Flashing
Unit is powering down
Flashing Flashing Flashing Flashing Flashing Flashing Flashing Flashing
Checksum failure error (on
page
* This LED can be in any state.
For the location of individual LEDs, see "UPS front panel LED indicators (on page
)."
UPS is in Auto-Bypass mode
The UPS transfers from Operate mode (on page
) 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.