Power Failure (Subsequent Unit)

What does ALM LED Blink (3:1) mean?

The red ALM LED blinks with a 3:1 duty cycle (1.5s ON / 0.5s OFF), indicating a power failure (which may include instantaneous power failure) in a unit subsequent to the unit of interest. This signifies a power supply interruption downstream from the current unit.

1. 1

   Identify and remove the cause of a power failure in a unit subsequent to the unit of interest.