Lutron Caséta Smart Home Error Codes

Complete diagnostic guide for Lutron Caséta smart home devices including smart switches, dimmers, and Caséta Smart Bridge.

LED Indicator and Visual Errors

Error codes indicated by LED status lights, blinking patterns, and visual indicators on switches and dimmers.

Code	Meaning	Possible Causes	Solutions
LED Blinking Red	LED indicator blinking or glowing red	•Incompatible bulbs •LUT-MLC (Lutron Load Capacitor) not installed •Minimum load not met •Bulbs not dimmable •Load compatibility issues	Ensure bulbs are dimmable Install LUT-MLC according to instructions for proper operation Check minimum load requirements Verify bulb compatibility Test with compatible dimmable bulbs Contact Lutron support
LED Flashing	LED indicator flashing	•Device pairing mode •Communication error •Setup in progress •Error condition •Firmware update	Check device status in app Complete setup process Check for firmware updates Reset device if needed Contact Lutron support
No LED Indicator	LED status light not working	•LED hardware failure •Power supply issues •Device not powered •Software glitch	Check power supply Restart device Check for physical damage Update firmware Contact Lutron support

Switch and Dimmer Operation Errors

Error codes related to switch and dimmer functionality problems, control issues, and operation failures.

Code	Meaning	Possible Causes	Solutions
Light Stays On	Light remains on when switch is off	•LUT-MLC (Lutron Load Capacitor) not installed •Minimum load not met •Load compatibility issues •Switch malfunction	Install LUT-MLC according to instructions Ensure light turns off properly Check minimum load requirements Verify load compatibility Test switch operation Contact Lutron support
Dimmer Not Working	Dimmer function not operating	•Incompatible bulb type •Bulb not dimmable •Minimum load not met •LUT-MLC not installed •Dimmer settings misconfigured	Check bulb is dimmable Verify bulb type compatibility Check minimum load requirements Install LUT-MLC if needed Adjust dimmer settings Test with compatible bulb Contact Lutron support
Light Flickering	Lights flicker when dimmed	•Incompatible bulb type •Minimum load not met •LED bulb compatibility issues •LUT-MLC not installed •Dimmer settings incorrect	Use compatible dimmable bulbs Check minimum load requirements Install LUT-MLC if needed Adjust dimmer settings Use LED-compatible dimmer Test with different bulbs Contact Lutron support
Switch Not Responding	Switch does not respond to commands	•Device offline •App connection lost •Firmware issues •Hardware failure •Power supply problems	Check device is online Restart device Check app connection Update firmware Check power supply Contact Lutron support

Smart Bridge and Hub Connection Errors

Error codes related to Caséta Smart Bridge connectivity issues, hub communication problems, and bridge setup failures.

Code	Meaning	Possible Causes	Solutions
Bridge Offline	Caséta Smart Bridge not connected	•Ethernet cable disconnected •Router issues •Internet connection down •Bridge power failure •Network configuration error	Check Ethernet cable connection Verify router is working Check internet connection Restart bridge Check power supply Verify network settings Contact Lutron support
Device Not Found	Switch or dimmer not found by bridge	•Device not paired •Out of range •Pairing lost •Bridge communication issues •Device reset	Re-pair device with bridge Move device closer to bridge Check device is in pairing mode Reset device and re-pair Check bridge status Contact Lutron support
Bridge Connection Error	Cannot connect to Caséta Smart Bridge	•Network issues •Bridge not on same network •Firewall blocking connection •Bridge firmware issues	Check network connection Verify bridge is on same network Check firewall settings Update bridge firmware Restart bridge Contact Lutron support

Third-Party Integration Errors

Error codes related to problems with third-party integrations like Apple HomeKit, Amazon Alexa, and Google Home.

Code	Meaning	Possible Causes	Solutions
Integration Lost	Third-party integration not working	•Caséta Smart Hub lost internet connection •Account information changes •Integration credentials expired •Service provider issues	Ensure Caséta Smart Hub is connected to internet Re-setup integration after account information changes Check integration credentials Re-authenticate with third-party service Check service provider status Contact Lutron support
HomeKit Not Responding	Apple HomeKit integration failed	•Hub internet connection lost •HomeKit credentials changed •Apple account issues •Network problems	Check hub internet connection Re-authenticate HomeKit Check Apple account status Restart hub Re-setup HomeKit integration Contact Lutron support
Alexa Not Working	Amazon Alexa integration failed	•Hub internet connection lost •Alexa account changes •Skill not enabled •Network issues	Check hub internet connection Re-enable Lutron skill in Alexa app Check Alexa account status Restart hub Re-setup Alexa integration Contact Lutron support
Google Home Not Working	Google Home integration failed	•Hub internet connection lost •Google account changes •Service not linked •Network issues	Check hub internet connection Re-link Lutron service in Google Home app Check Google account status Restart hub Re-setup Google Home integration Contact Lutron support

Wi-Fi and Network Communication Errors

Error codes related to Wi-Fi connectivity issues, network communication problems, and app connection failures.

Code	Meaning	Possible Causes	Solutions
App Connection Error	Cannot connect to Lutron app	•App not updated •Account synchronization issues •Network connectivity problems •Server connection issues	Update Lutron app to latest version Check internet connection Verify account credentials Restart mobile device Restart bridge Re-login to app Contact Lutron support if needed
Server Communication Error	Cannot connect to Lutron servers	•Internet connection down •Firewall blocking connection •Server maintenance •Account authentication problems	Check internet connection Verify bridge is connected Check firewall settings Restart bridge Wait for server maintenance to complete Verify account credentials Contact Lutron support if persistent

Electrical and Wiring Errors

Error codes related to electrical problems, wiring issues, and power supply failures.

Code	Meaning	Possible Causes	Solutions
No Power	Device has no power	•Circuit breaker tripped •Wiring not connected •Power supply failure •Fuse blown •Electrical circuit issues	Check circuit breaker Verify wiring connections Check power supply Test with multimeter Contact qualified electrician Do not attempt electrical repairs yourself Contact Lutron support
Wiring Error	Incorrect wiring configuration	•Wrong wire connections •Neutral wire not connected •Ground wire issues •Line/Load wires reversed •Incompatible wiring	Review wiring diagram Verify all wire connections Check neutral wire connection Verify line and load wires Test with multimeter Contact qualified electrician Contact Lutron support
Overload Error	Device overloaded	•Exceeding maximum load capacity •Too many devices on circuit •High power consumption •Incompatible load type	Check load capacity Reduce number of devices Verify load type compatibility Check power consumption Contact qualified electrician Contact Lutron support

System and Hardware Errors

Error codes related to system failures, hardware problems, and internal errors.

Code	Meaning	Possible Causes	Solutions
System Error	Internal system error	•Software error •Hardware malfunction •Firmware corruption •System crash •Memory error	Reset Lutron device Power cycle the device Check for firmware updates Contact Lutron support Consider factory reset if needed Document error for support team
Device Not Responding	Device completely unresponsive	•Hardware failure •Power supply issues •Firmware corruption •System crash	Check power supply Power cycle device Reset device Check for physical damage Contact Lutron support immediately Consider replacement if under warranty

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Important Information

If you encounter persistent errors or cannot resolve a problem using the solutions provided, contact Lutron customer support or a qualified electrician for professional assistance. Smart switches and dimmers require specific electrical knowledge. Never attempt to repair wiring, electrical connections, or internal components yourself unless you are a qualified and certified electrician. Different Lutron Caséta device models may have model-specific error codes—always consult your device documentation and user manual for the most accurate information.

For technical support, contact Lutron customer service or visit support.lutron.com for assistance.

Safety Information: Lutron Caséta smart switches and dimmers operate with electrical systems and high voltage. Always turn off power at the circuit breaker before any inspection or maintenance. Never work on electrical systems without the appropriate qualifications. Some errors may require intervention from a qualified electrician. If you are unsure of a procedure, contact a qualified electrician immediately. Never bypass safety systems or attempt electrical repairs for which you are not qualified. The LUT-MLC (Lutron Load Capacitor) may be required for proper operation with certain loads—consult your device documentation.

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Troubleshooting Guidelines

Common Troubleshooting Steps

✓Check device status in Lutron app
✓Check LED indicator status on switch/dimmer
✓Verify Caséta Smart Bridge is online
✓Turn off power at circuit breaker before inspection
✓Check wiring connections (with power off)
✓Document error codes for support calls
✓Contact a qualified electrician for electrical problems

Prevention Strategies

✓Install LUT-MLC when required for proper operation
✓Use compatible dimmable bulbs
✓Ensure proper installation by qualified electrician
✓Keep Caséta Smart Bridge connected to internet
✓Do not exceed maximum load capacity
✓Keep device documentation accessible
✓Follow manufacturer maintenance schedule

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Frequently Asked Questions

What does it mean when the LED on my Lutron Caséta switch is blinking or glowing red?

A blinking or red LED indicator typically indicates incompatible bulbs or a missing LUT-MLC (Lutron Load Capacitor). Ensure bulbs are dimmable, install the LUT-MLC according to instructions for proper operation, check minimum load requirements, verify bulb compatibility, test with compatible dimmable bulbs, and contact Lutron support if needed.

Why does my light stay on when the switch is off?

If the light stays on when the switch is off, this usually means the LUT-MLC (Lutron Load Capacitor) is not installed. Install the LUT-MLC according to instructions to ensure the light turns off properly, check minimum load requirements, verify load compatibility, test switch operation, and contact Lutron support for assistance.

How do I fix third-party integration problems (HomeKit, Alexa, Google Home)?

If third-party integrations are not working, ensure the Caséta Smart Hub is connected to the internet, re-setup the integration after account information changes, check integration credentials, re-authenticate with the third-party service, check service provider status, and contact Lutron support if the problem persists.

What should I do if my Caséta Smart Bridge is offline?

If the bridge is offline, check the Ethernet cable connection, verify the router is working, check the internet connection, restart the bridge, check the power supply, verify network settings, and contact Lutron support for assistance.

Why is my Lutron Caséta dimmer not working?

If the dimmer is not working, check that the bulb is dimmable, verify bulb type compatibility, check minimum load requirements, install LUT-MLC if needed, adjust dimmer settings, test with a compatible bulb, and contact Lutron support for assistance.

How often should I maintain my Lutron Caséta devices?

Regular maintenance helps prevent many error codes. Install LUT-MLC when required for proper operation, use compatible dimmable bulbs, ensure proper installation by a qualified electrician, keep Caséta Smart Bridge connected to internet, do not exceed maximum load capacity, keep device documentation accessible, and follow manufacturer recommendations.

Can I repair Lutron Caséta switches myself?

Basic troubleshooting activities like checking device status, verifying app connections, and restarting devices can be performed safely. However, all electrical work, wiring repairs, and hardware repairs must be performed by qualified and certified electricians. Always contact a qualified electrician for electrical problems. Wiring errors can cause electrical hazards and require immediate professional attention.

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Summary

Correct interpretation of Lutron Caséta smart home device error codes is essential for efficient troubleshooting and maintenance. This comprehensive reference enables rapid problem identification and guides appropriate response actions. Lutron Caséta smart switches and dimmers display error codes through LED indicators and app notifications to indicate specific problems. Understanding these codes helps maintain system performance and maximize functionality. Lutron produces premium smart home devices including Caséta smart switches, dimmers, and the Caséta Smart Bridge, each with model-specific features and error code systems. This guide provides diagnostics and solutions for all common Lutron Caséta error codes.

ℹ️For persistent errors or problems that cannot be resolved using this guide, contact Lutron customer support or visit support.lutron.com. Some errors may require technical support, component replacement, or specialized diagnostic equipment. Always document error codes and symptoms when contacting support for faster resolution. Note that error code formats may vary based on the device model and software version—always consult your specific device documentation and user manual for the most accurate information. Safety should always be the top priority when working with smart switches and dimmers. Never work on electrical systems unless you are a qualified and certified electrician. Always follow appropriate safety procedures and lockout/tagout protocols. The LUT-MLC (Lutron Load Capacitor) may be required for proper operation with certain loads—consult your device documentation for specific requirements.