Troubleshooting 53
Off On Off
On—
Battery
capacity
<25%
On—
Battery
capacity
>25%
On—
Battery
capacity
>50%
On—
Battery
capacity
>75%
Off
UPS is on battery (on page
55)—No utility power
* * * Off * * Flashing *
Overtemperature condition
(on page 56)
Off Off On Flashing Flashing Flashing Flashing Flashing
Internal UPS fault condition
(on page 56)
Flashin
g
Off Off Flashing Flashing Flashing Flashing Flashing
REPO condition (on page
56)
* Off * Off * Flashing * *
Site wiring condition (on
page 56)
* Off * On On On On Flashing
Overload condition (on page
57)—UPS power capacity is
exceeded with no other faults
* Off * Off * * * Flashing
Overload condition (on page
57)—UPS power capacity is
exceeded while other faults
exist
Off On Off
On—
Battery
capacity
<25%
On—
Battery
capacity
>25%
On—
Battery
capacity
>50%
On—
Battery
capacity
>75%
Flashing
Overload condition (on page
57)—UPS power capacity is
exceeded while on battery
with no other faults
Off On Off Off Off Off Flashing Flashing
Overload condition (on page
57)—UPS power capacity is
exceeded while on battery
with overtemperature fault
Off
Flashin
g
Off Flashing Flashing Flashing Flashing Flashing Unit is powering down
Flashin
g
Flashin
g
Flashin
g
Flashing Flashing Flashing Flashing Flashing
Checksum failure error (on
page 57)
* This LED can be in any state.
For the location of individual LEDs, see "UPS front panel LED indicators (on page 8)."
UPS is in Auto-Bypass mode
The UPS transfers from Operate mode (on page 38) 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