Status Green LED

Cycle finished normally — green LED on SignaLight display.

? What Causes This

Wash cycle has completed successfully.

ⓘ What This Means

No action needed. Cycle is complete. Open door and remove dishes. Default setting keeps green light on until door is opened; can be changed to turn off after 90 seconds.

Source: page 8 of the official manual

From the manual

This error code appears in:

LG Drain Series Dishwasher