Error handling and diagnostics

Diagnostics LED, Uin.
LED	Color	Description
Uin	Green	Input voltage Uin is present and is within the defined limits between 24.4 V and 28.8 V.
	Red	Input voltage Uin is below 20.4 V. UPS is switched in the UPS mode (undervoltage protection).
	Yellow	Input voltage Uin is over 28.8 V. UPS is switched in the UPS mode (overvoltage protection).

Diagnostics LED, Uout.
LED	Color	Description
Uout	Green	Output voltage Uout present.
	Red	Output voltage Uout switched off.
	Yellow	Output voltage Uout is above 28.8 V.

Diagnostics LED, DIAG.
LED	Color	Description
DIAG	Off	No input voltage Uin present. UPS is not initialized.
	White	No battery module or capacitor board found.
	White, Red or White, Green flashing	White: timer for shutdown is active. Red: in case of discharge. Green: intentional shutdown.
	Red	No input voltage Uin present. UPS is not being charged.
	Blue, Red	Input voltage Uin present but no battery module.
	Blue, Magenta	Battery module does not match the UPS.
	Green, flashing	UPS is being charged.
	Green, Yellow	UPS is below or above the allowed ambient temperature.
	Green	Input voltage Uin present. UPS is ready for operation and charged.
	Red, flashing	No input voltage Uin. UPS mode started and UPS is being discharged.