Low AC

(AC input voltage is low or off for 6 hours or longer.)

Input 1 and Input 2 supervision circuits open after 6 hour delay.

The green AC LED turns off as soon as low AC or loss of AC occurs (does not wait 6 hours).

The trouble relay is de-energized after a 6 hour delay.

The trouble restores within 1 minute of the AC voltage restoring to a normal level.