Why Is My Leviton Decora Smart Switch Randomly Rebooting and Clicking

Problem Description

Your Leviton Decora smart switch clicks and appears to reboot on its own, causing lights to flicker or reset state unexpectedly. App control may disconnect briefly during each event. Common causes include unstable neutral connection, overloaded circuit behavior, firmware instability, or incompatible LED load causing repeated relay protection cycling.

Why This Happens in Real Homes

A Leviton Decora Smart switch that clicks and reboots itself is describing its relay cycling — the audible click is the relay opening and closing, and it usually means the switch is losing stable power or protecting itself against a load it doesn't like. The most common electrical cause is a loose or unstable neutral: since the switch draws its operating power through the neutral, a marginal connection makes it brown out, reset, and click back on.

Kill the power and re-check the neutral and the line/load terminations first — a properly tightened neutral fixes many of these. If the wiring is solid, look at the load: an incompatible LED, or a load so small it falls below the switch's minimum, can trigger repeated relay protection cycling, so try a known-compatible dimmable bulb. A circuit shared with a large motor load can sag the voltage enough to reset the switch, and a firmware update resolves known instability. In a packed gang box, heat can contribute, so de-rating helps.

Symptoms

• Switch clicks and reboots on its own
• Lights flicker or reset unexpectedly
• App control drops briefly during each event
• Relay clicking repeatedly
• State resets by itself
• Random restarts
• Clicking under load
• Cycles when the light is on

Recognize these? Here's what usually causes it.

Common Causes

• Unstable or loose neutral connection
• Incompatible LED load causing relay protection cycling
• Circuit overloaded or shared with a large load
• Firmware instability
• Undersized/very low LED load below the switch's minimum
• Loose line/load terminations
• Voltage sag on the circuit
• Heat buildup in a crowded gang box

Tools & Requirements

Step-by-Step Solution

1

Check Wiring Terminations

Turn power off and inspect line, load, neutral, and ground terminations on the switch. Loose neutral is a common cause of random reboots and clicking relay behavior. Re-terminate conductors with clean copper contact and proper torque, then restore power and observe whether reboot cycling stops.

2

Isolate Electrical Load

Temporarily reduce connected load by removing extra fixtures or testing with a known compatible bulb. If random clicking disappears under lighter load, the original setup may exceed stable switching conditions or involve incompatible LED drivers. This test quickly separates wiring problems from load compatibility issues.

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3

Validate LED Compatibility

Check Leviton compatibility guidance for your bulb model and dimmer/switch type. Some LED drivers generate inrush or low-end instability that triggers relay chatter and watchdog resets. Replace questionable bulbs with tested compatible models and retest over several on-off cycles and dim levels.

4

Review Firmware and App Logs

Update switch firmware through the Leviton app and monitor event logs for repeated disconnect patterns. Firmware-level stability fixes often address spontaneous restarts. After updating, reboot the switch from app controls and test both manual and remote operation under normal household electrical load conditions.

5

Monitor Temperature and Voltage Clues

If clicking persists, note whether events correlate with HVAC, microwave, or other large appliances starting on nearby circuits. Voltage dips can trigger smart switch resets. Persistent reset behavior after wiring and load corrections may indicate hardware fault requiring replacement under warranty.

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Quick Solutions

Still having issues? This is usually the deeper cause below.

Need More Help? Leviton Support

Note: The contact information below connects you directly to Leviton's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.