Green Light Flashing indicates normal operation, while not on or constantly on indicates abnormal operation.

Yellow Off / Red Flashing Long delay fault.

Yellow Flashing / Red Off Overload warning (slow flashing greater than 90% of the long delay setting value, fast flashing greater than the long delay setting value).

Yellow On / Red Flashing Short delay fault.

Yellow On / Red On Ground fault.

Yellow Flashing / Red Flashing Instantaneous fault.

Communication Indication If there is a cabinet door unit, regardless of whether there is an upper computer, it indicates communication with the cabinet door unit. If there is no cabinet door unit, but there is an upper computer, it indicates communication with the upper computer.