Indicator Light

Indicator Lights are tube lights situated on electricity-powered and generator buildings that reflect the building's operating state. There are four total operating states they can display.

States

Color		State	Meaning	Cause
	Red	Blinking	No Power	Building is not connected to a Power Line Production building has no recipe configured Building other than a power generator has no power supply The grid it is connected to either has no operating power generator or is tripped Power generator is out of fuel or Water
	Yellow	Blinking	Standby	Production building is starving for resources by not having enough materials in its input slots Building has backed up resources in its output slots Building is manually set to standby mode by clicking the standby switch in its UI Pipeline Pump is powered but fluid is not flowing through; or is placed on a Pipeline containing a gas The Pump is not connected to a Pipeline on both ends There is no fluid to be moved or nowhere to move it to Head lift is exceeded Hyper Tube Entrance is not connected to a Hyper Tube Jump Pad has been used in the last ~2 seconds Truck Station doesn't have any vehicle docked under it
	Green	Solid	Working	The building is operational, such as by crafting, extracting, producing power, or otherwise executing its function
	White/Blue	Solid	Overclocked	Same as the green state, but the building has a Power Shard inserted (it does not need to be actually operating overclocked)

Notes

• When a building is constructed, its light will be black, due to a bug. This is resolved as soon as the state of the light changes from the default red, or upon reloading the save file.
• Production buildings refers to buildings with configurable recipes.
• The color of the overclocked state appears white on high gamma values and light blue on low gamma values.
• The blinking animation introduced in Patch 0.8.1.3 differs from the animation present in the game up until Patch 0.3.4.0.

Exceptions

Power consumers or generators that lack Indicator Lights are:

• Particle Accelerator
•  Lights
• Crash Sites
• AWESOME Sink
• Freight Platform and Fluid Freight Platform

Some buildings have non-standard ways of displaying their state:

• Power Storage has a charge indicator on its side
• The Radar Tower has three Indicator Lights, the only building to have multiple. All lights display the same color.

Trivia

• Indicator Lights were not named until the 0.5.0.2 patch notes, where they were named "Building Status Indicator Lights".
  • 0.5.0.10 patch notes refer to them as "Status Indicator".
  • Patch 0.8.1.3 refer to them as "Production Indicator lights"
• There is an "indigo blue" state which only appeared on unfinished or improperly implemented buildings.

Gallery

• 

  Constructors with the red, yellow, green and white/blue Indicator Lights
• 

  An example of the old Blue Indicator light bug on an unreleased building.
• 

  An example of the old Blue Indicator light bug on an unreleased building.

History

• Patch 0.8.1.3: Fixed an issue where the red and yellow states wouldn’t flash
• Patch 0.7.0.0: No power state appears unlit for newly built buildings (bug)
• Patch 0.5.0.10: Fixed Fuel Generator Status Indicator being offset
• Patch 0.5.0.2 (Released again in Patch 0.5.0.3): Fixed Building Status Indicator Lights not working
• Patch 0.5.0.0: Indicator Lights no longer work, appearing to be turned off (bug)
• Patch 0.3.4.0: Red and yellow states no longer flash (bug)