APC Back-UPS All LEDs Flashing: Internal Fault Meaning
On APC Back-UPS guidance, all LEDs flashing simultaneously signifies an internal UPS fault.
Back-UPS LEDsMultiple LEDsAll LEDs flashing simultaneously
Brand hub
APC Light Guide
\1
Model warning: Do not assume every APC device uses the same light codes. Always choose the closest exact model.
APC Back-UPS Green On Line Flashing and Yellow On Battery Solid
On APC Back-UPS guidance, a flashing green On Line LED with a solid yellow On Battery LED means the UPS is performing a battery self-test.
Back-UPS LEDsGreen and yellowGreen flashing with yellow solid
APC Back-UPS Red Overload Light: Meaning and Fix
On APC Back-UPS guidance, a solid red Overload LED means connected equipment is drawing more power than the UPS can provide.
Back-UPS LEDsRedSolid
APC Back-UPS Red Replace Battery Light: Meaning and Fix
On APC Back-UPS guidance, a solid red Replace Battery LED means the automatic diagnostic test determined the battery is near the end of its useful life.
Back-UPS LEDsRedSolid
APC Back-UPS Yellow On Battery Light: Meaning and Fix
On APC Back-UPS guidance, a solid yellow On Battery LED means the UPS is operating on battery power.
Back-UPS LEDsYellowSolid