Dell E26S Series owner manual Power supply unit indicator codes, AC PSU status indicator

Power supply unit indicator codes

Each AC power supply unit (PSU) has an illuminated translucent handle and each DC PSU (when available) has an LED that serves as an indicator to show whether power is present or a power fault has occurred.

Figure 11. AC PSU status indicator

1.AC PSU status indicator/handle

Convention	Power indicator	Condition
	pattern
A	Green	A valid power source is connected to the PSU and the PSU is
		operational.
B	Flashing green	When the firmware of the PSU is being updated, the PSU handle
		flashes green.
C	Flashing green	When hot-adding a PSU, the PSU handle flashes green five times at
	and turns off	4 Hz rate and turns off. This indicates that there is a PSU mismatch
		with respect to efficiency, feature set, health status, and supported
		voltage. Replace the PSU with a PSU that matches the capacity of
		the other PSU.
		CAUTION: For AC PSUs, use only PSUs with the Extended
		Power Performance (EPP) label on the back. Mixing PSUs from
		previous generations of Dell PowerEdge servers can result in a
		PSU mismatch condition or failure to power on.
D	Flashing amber	Indicates a problem with the PSU.

24