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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
58)—No utility power
*
* * Off * * Flashing * Overtemperature condition (on
page 59)
Off
Off On Flashing Flashing Flashing Flashing Flashing Internal UPS fault condition (on
page 59)
Flashing
Off Off Flashing Flashing Flashing Flashing Flashing REPO condition (on page 59)
*
Off
*
Off
*
Flashing
*
*
Site wiring condition (on page
59)
*
Off * On On On On Flashing Overload condition (on page
59)—UPS power capacity is
exceeded with no other faults
*
Off * Off * * * Flashing Overload condition (on page
59)—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
59)—UPS power capacity is
exceeded while on battery with
no other faults
Off
On Off Off Off Off Flashing Flashing Overload condition (on page
59)—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 60)
* 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 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.