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Home Support Projectors Pro Series Epson Pro L20000U

The product's light(s) indicate an error. What should I do?

    The lights on the projector indicate the projector status and let you know when a problem occurs. Check the status and color of the lights and look for a solution in the table here.

    1 LAN (wired network or HDBaseT status)
    2 WLAN (wireless network status)
    3 Filter light
    4 Temp (temperature) light
    5 Laser light
    6 Status light
    7 On/Standby light
    On/Standby (power) light Status light Laser light Temp light Filter light Status and solution
    Blue Off Off Off Off Projector is in standby mode or network monitoring and control is in progress.
    Blue Flashing blue Varies Off Off Warming up. Wait for an image to appear.
    Blue Blue Varies Off Off Normal operation.
    Blue Blue Flashing orange fast Off Off Projector is connected to a 110 V power source and the laser is operating at approximately 55% of available power.

    For optimal performance, connect the projector to a 220 V power source using the 220 V power cord that came with the projector.

    Blue Flashing blue Off Off Off Cooling down. All buttons are disabled.
    Flashing blue Off Off Off Off Preparing network monitoring. (Wait for the light to remain orange before unplugging the projector.)
    Blue Blue Flashing blue Off Off The shutter feature is enabled.
    Off Flashing blue Flashing orange Off Off Internal error. Turn off the projector, unplug the power cord, and contact Epson for help.
    Off Flashing blue Off Flashing orange Off A fan or sensor has a problem. Turn off the projector, unplug the power cord, and contact Epson for help.
    Off Flashing blue Off Orange Off Projector is too hot. Wait for about five minutes so the projector can switch to standby mode. Then check the following:
    • Make sure that the vents and air filter are not clogged with dust or obstructed by nearby objects.
    • Clean or replace the air filter.
    • Make sure the environmental temperature is not too hot.
    • If operating the projector at high altitude, turn on High Altitude Mode.
    • If the problem persists, unplug the projector and contact Epson for help.
    Off Flashing blue Orange Off Off Laser error.
    • Make sure that the vents and air filter are not clogged with dust or obstructed by nearby objects.
    • Clean or replace the air filter.
    • If the problem persists, unplug the projector and contact Epson for help.
    Off Flashing blue Off Off Orange Low air flow through the projector.
    • Make sure that the vents and air filter are not clogged with dust or obstructed by nearby objects.
    • Clean or replace the air filter.
    • If the problem persists, unplug the projector and contact Epson for help.
    Off Flashing blue Orange Orange Off No lens installed, or lens shift or supply voltage error. Remove and reinstall the lens. If the problem persists, turn off the projector, unplug the power cord, and contact Epson for help
    Off Flashing blue Flashing orange Flashing orange Off Shutter error. Turn off the projector, unplug the power cord, and contact Epson for help.
    Flashing blue Varies Varies Flashing orange Varies High temperature warning. If the temperature gets too high, projection will automatically stop.
    • Make sure that the vents and air filter are not clogged with dust or obstructed by nearby objects.
    • Make sure the environmental temperature is not too hot.
    • Clean or replace the air filter.
    Varies Varies Varies Varies Flashing orange Clean the air filter.
    Flashing blue Varies Flashing orange Varies Varies Laser warning. Turn off the projector, unplug the power cord, and contact Epson for help.
    Flashing blue Varies Flashing orange Varies Varies An unsupported lens is attached. Attach only a supported lens.
    Flashing blue Varies Flashing orange Flashing orange Varies Shutter error. Turn off the projector, unplug the power cord, and contact Epson for help.
    Flashing blue Varies Varies Varies Orange Low air flow through the air filter.
    • Make sure that the vents and air filter are not clogged with dust or obstructed by nearby objects.
    • Clean or replace the air filter.
    • If the problem persists, unplug the projector and contact Epson for help.
    Varies Varies Flashing orange Varies Varies End of Constant Brightness mode.
    Varies Off Flashing orange fast Flashing orange fast Varies When performing batch setup using a USB flash drive, the setup file may be corrupt or the USB flash drive may not be connected correctly. Remove the USB flash drive, turn off the projector and unplug the power cord, then plug the power cord back in, turn on the projector, and try again.
    Flashing blue fast Off Flashing orange fast Flashing orange fast Flashing blue fast When performing batch setup, an error may have occurred when writing the settings. Turn off the projector, unplug the power cord, and contact Epson for help.
    LAN light WLAN light Status and solution
    Blue You can use a wired LAN or HDBaseT transmitter
    Off Cannot use wired LAN or HDBaseT transmitter. Check the LAN cable connection and your LAN or HDBaseT transmitter settings.
    Blue Wireless LAN is available.
    Flashing blue quickly Connecting to a device.
    Flashing blue slowly Wireless error. Turn the projector off and then on again.
    Off Wireless LAN is unavailable. Check your wireless LAN settings.

    Note: If the lights display a pattern not listed in the table above, turn the projector off, unplug it, and contact Epson for help.

    Related concepts
    Air Filter and Vent Maintenance
    Wired Network Projection
    Wireless Network Projection
    Related tasks
    Turning On the Projector
    Shutting Off the Picture Temporarily
    Turning Off the Projector
    Related references
    Projector Setup Settings - Extended Menu
    Optional Equipment and Replacement Parts
    Projector Feature Settings - Settings Menu
    Where to Get Help
    Related information
    Attaching and Removing a Lens
    Copying Menu Settings Between Projectors
Published:  Nov 21, 2019 Was this helpful​? Thank you for the feedback!
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