Leviton Smart Home Error Codes

Complete diagnostic guide for Leviton smart home devices including Decora Smart switches, dimmers, and smart home products.

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
Wi-Fi Connection Failed	Cannot connect to Wi-Fi network	•Wi-Fi network unavailable •Incorrect Wi-Fi password •Router not broadcasting •Signal too weak •Network configuration error •2.4GHz network required	Check Wi-Fi network availability Verify Wi-Fi password is correct Move device closer to router Ensure router is broadcasting 2.4GHz network Check router settings Reset Wi-Fi connection on device Update router firmware if needed
Device Offline	Device not connected to network	•Wi-Fi connection lost •Network configuration error •Router problems •Signal too weak •Internet connection down	Check Wi-Fi connection Restart device Check router status Verify internet connection Move device closer to router Reset Wi-Fi connection Contact Leviton support
App Connection Error	Cannot connect to Leviton app	•App not updated •Account synchronization issues •Network connectivity problems •Server connection issues	Update Leviton app to latest version Check internet connection Verify account credentials Restart mobile device Restart device Re-login to app Contact Leviton support if needed
Server Communication Error	Cannot connect to Leviton servers	•Internet connection down •Firewall blocking connection •Server maintenance •Account authentication problems	Check internet connection Verify Wi-Fi is connected Check firewall settings Restart device Wait for server maintenance to complete Verify account credentials Contact Leviton 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 Leviton 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 Leviton 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 Leviton support
Voltage Error	Incorrect voltage detected	•Voltage too high •Voltage too low •Voltage fluctuations •Incompatible voltage	Check voltage with multimeter Verify voltage is within range Check for voltage fluctuations Contact qualified electrician Contact Leviton 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
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 Leviton support
Dimmer Not Working	Dimmer function not operating	•Incompatible bulb type •Bulb not dimmable •Minimum load not met •Dimmer settings misconfigured •Hardware failure	Check bulb is dimmable Verify bulb type compatibility Check minimum load requirements Adjust dimmer settings Test with compatible bulb Contact Leviton support
Light Flickering	Lights flicker when dimmed	•Incompatible bulb type •Minimum load not met •LED bulb compatibility issues •Dimmer settings incorrect	Use compatible dimmable bulbs Check minimum load requirements Adjust dimmer settings Use LED-compatible dimmer Test with different bulbs Contact Leviton support
Button Not Working	Physical button not responding	•Button mechanism failure •Hardware damage •Software glitch •Power supply issues	Restart device Check for physical damage Update firmware Test button functionality Contact Leviton support Consider replacement if under warranty

Programming and Setup Errors

Error codes related to programming failures, setup problems, and configuration errors.

Code	Meaning	Possible Causes	Solutions
Setup Failed	Initial setup not completed	•Setup process interrupted •Configuration not saved •App connection lost during setup •Network issues during setup	Complete initial setup process Ensure stable Wi-Fi connection Follow setup instructions step by step Restart setup if interrupted Check app for setup status Contact support for assistance
Programming Error	Device programming failed	•Programming steps not followed correctly •Timeout during programming •Device in wrong mode •Programming sequence interrupted	Follow programming instructions carefully Complete programming within time limit Ensure proper button sequence Reset and try programming again Check device mode Contact Leviton support if problem persists
Factory Reset Required	Device needs factory reset	•Configuration corrupted •Programming errors •System malfunction •Reset needed for troubleshooting	Perform factory reset procedure Follow reset instructions carefully Reprogram device after reset Reconnect to Wi-Fi Re-setup in app Contact support if reset fails

Firmware and Update Errors

Error codes related to firmware update failures, software installation problems, and update process errors.

Code	Meaning	Possible Causes	Solutions
Firmware Update Failed	Firmware update cannot complete	•Update download failed •Network interruption during update •Insufficient storage •Update server issues	Check internet connection Retry firmware update Ensure stable Wi-Fi connection Wait and try again later Contact Leviton support if persistent
Update Timeout	Firmware update timed out	•Slow internet connection •Network interruption •Update server slow •Device connection issues	Check internet speed Ensure stable connection Retry update Wait for server to be available Contact Leviton 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 Leviton device Power cycle the device Check for firmware updates Contact Leviton support Consider factory reset if needed Document error for support team
LED Indicator Error	LED status indicator not working	•LED hardware failure •Indicator circuit problems •Software glitch •Power supply issues	Restart device Check power connections Update firmware Contact Leviton support for LED issues Do not attempt hardware repairs Consider replacement if under warranty
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 Leviton 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 Leviton 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 Leviton device models (Decora Smart, etc.) may have model-specific error codes—always consult your device documentation and user manual for the most accurate information.

For technical support, contact Leviton customer service at 1-800-824-3005 (Monday-Friday 8:00 AM-10:00 PM EST, Saturday 9:00 AM-7:00 PM EST, Sunday 9:00 AM-5:00 PM EST) or visit leviton.com for assistance.

Safety Information: Leviton 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. Wiring errors can cause electrical hazards and require immediate professional attention.

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Troubleshooting Guidelines

Common Troubleshooting Steps

✓Check device status in Leviton app
✓Turn off power at circuit breaker before inspection
✓Check LED status indicators
✓Verify Wi-Fi connection for remote access
✓Check wiring connections (with power off)
✓Document error codes for support calls
✓Contact a qualified electrician for electrical problems

Prevention Strategies

✓Ensure proper installation by qualified electrician
✓Use compatible dimmable bulbs
✓Keep firmware updated
✓Do not exceed maximum load capacity
✓Maintain proper network connectivity
✓Keep device documentation accessible
✓Follow manufacturer maintenance schedule

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Frequently Asked Questions

Why is my Leviton smart switch not responding?

If your switch is not responding, check that the device is online, restart the device, check app connection, update firmware, check power supply, and contact Leviton support. Always turn off power at the circuit breaker before checking wiring connections.

What should I do if my Leviton dimmer is not working?

If the dimmer is not working, check that the bulb is dimmable, verify bulb type compatibility, check minimum load requirements, adjust dimmer settings, test with a compatible bulb, and contact Leviton support for assistance.

Why are my lights flickering when using a Leviton dimmer?

Light flickering is often caused by incompatible bulb types or minimum load not being met. Use compatible dimmable bulbs, check minimum load requirements, adjust dimmer settings, use LED-compatible dimmer, test with different bulbs, and contact Leviton support if the problem persists.

How do I fix Wi-Fi connection errors on Leviton devices?

For Wi-Fi connection errors, check Wi-Fi network availability, verify the Wi-Fi password is correct, move the device closer to the router, ensure the router is broadcasting a 2.4GHz network, check router settings, reset the Wi-Fi connection on the device, and update router firmware if needed.

What causes wiring errors on Leviton smart switches?

Wiring errors can be caused by wrong wire connections, neutral wire not connected, ground wire issues, line/load wires reversed, or incompatible wiring. Review the wiring diagram, verify all wire connections, check neutral wire connection, verify line and load wires, test with a multimeter, and contact a qualified electrician. Never attempt electrical repairs yourself.

How often should I maintain my Leviton smart switches?

Regular maintenance helps prevent many error codes. Ensure proper installation by a qualified electrician, use compatible dimmable bulbs, keep firmware updated, do not exceed maximum load capacity, maintain proper network connectivity, keep device documentation accessible, and follow manufacturer recommendations.

Can I repair Leviton smart 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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Need Additional Help?

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Summary

Correct interpretation of Leviton smart home device error codes is essential for efficient troubleshooting and maintenance. This comprehensive reference enables rapid problem identification and guides appropriate response actions. Leviton 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. Leviton produces premium smart home devices including Decora Smart switches and dimmers, each with model-specific features and error code systems. This guide provides diagnostics and solutions for all common Leviton error codes.

ℹ️For persistent errors or problems that cannot be resolved using this guide, contact Leviton customer support at 1-800-824-3005 (Monday-Friday 8:00 AM-10:00 PM EST, Saturday 9:00 AM-7:00 PM EST, Sunday 9:00 AM-5:00 PM EST) or visit leviton.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 (Decora Smart, etc.) 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. Wiring errors can cause electrical hazards and require immediate professional attention.