Shelly Smart Switches Troubleshooting

Find solutions for common Shelly smart switches problems. Step-by-step guides to get your devices working again.

Browse 7 troubleshooting guides for Shelly smart switches. Each guide targets a specific problem — from initial setup and connectivity issues to performance drops and error codes — with step-by-step instructions, difficulty ratings, and estimated repair times. Select a guide below to start fixing your Shelly device.

Troubleshooting Guides (7)

Why Does My Shelly Smart Switch Keep Losing WiFi After a Power Outage

Device: Shelly Smart Switch (Shelly 1, Shelly 1PM, Shelly 2.5, Shelly Plus 1, Shelly Plus 2PM)

Your Shelly smart switch loses its WiFi connection every time the power goes out and does not reconnect automatically when power returns. The switch still toggles the light manually at the wall but disappears from the Shelly app and your smart home automations stop working. You have to manually reboot the Shelly or power cycle the breaker a second time to get it back online. This is a common issue caused by the Shelly booting faster than your router after a power outage, so it fails to find the WiFi network during its initial connection window.

medium 15-20 minutes 293 views

Why Is My Shelly Relay Overheating or Tripping the Circuit Breaker?

Device: Shelly Smart Relay (Shelly 1, Shelly 1PM, Shelly 2.5, Shelly Plus 1, Shelly Plus 1PM, Shelly Plus 2PM)

Your Shelly relay is getting excessively hot or causing the circuit breaker to trip. The device may shut itself off due to thermal protection or the breaker may trip when the Shelly switches the connected load. Overheating relays are a safety concern and can indicate an overloaded circuit incorrect wiring or a failing device. This must be addressed immediately as continued overheating can damage wiring or create a fire hazard.

hard 20-30 minutes 246 views

Why Won't My Shelly Device Reconnect After a Power Outage?

Device: Shelly Smart Device (Shelly 1, Shelly Plus 1, Shelly Plus 2PM, Shelly Pro 1, Shelly Dimmer 2)

Your Shelly smart relay or dimmer does not reconnect to WiFi after a power outage. The physical switch works but the Shelly shows offline in the app and voice assistants cannot reach it. All automations involving this device stop working. This is a widely reported Shelly issue typically caused by the router and Shelly booting simultaneously and the Shelly failing the initial WiFi connection attempt.

medium 10-20 minutes 241 views

Why Does My Shelly Relay Keep Dropping WiFi or Going Offline

Device: Shelly Smart Relay (Shelly 1, Shelly 1PM, Shelly 2.5, Shelly Plus 1, Shelly Plus 2PM)

Your Shelly relay keeps disconnecting from WiFi and showing offline in the app. The physical switch still works but you lose remote control and automations. Shelly relays installed inside electrical boxes have weak WiFi because the metal junction box acts as a Faraday cage blocking WiFi signal.

medium 15-25 minutes 223 views

How Do I Back Up and Restore My Shelly Device Settings Before Performing a Factory Reset?

Device: Shelly Smart Switch (Shelly 1, Shelly 1PM, Shelly 2.5, Shelly Plus 1PM, Shelly Pro 4PM)

You need to factory reset your Shelly device to resolve a connectivity or configuration issue but you want to preserve your current settings including schedules, timers, MQTT configuration, and custom scripts so you can restore them after the reset. Shelly devices support a settings export via their built-in web interface that saves your configuration to a JSON file. This file can be re-imported after the reset to restore your settings without manually reconfiguring each option.

medium 15-20 minutes 148 views

Why Won't My Shelly Relay Connect to WiFi After Installation?

Device: Shelly Smart Relay (Shelly 1, Shelly 1PM, Shelly Plus 1, Shelly Plus 1PM, Shelly Plus 2PM)

Your Shelly smart relay is installed in the electrical box but will not connect to WiFi. The device creates its own AP for setup but cannot join your home WiFi. Without WiFi the relay works only as a dumb switch with no app control or automations. Typically caused by WiFi signal issues inside metal electrical boxes or router incompatibility.

medium 15-25 minutes 106 views

Why Is My Shelly Plus 2PM Showing Unbalanced Load Between the Two Channels

Device: Shelly Plus 2PM (SNSW-002P16EU, Plus 2PM, Dual Channel Relay)

Your Shelly Plus 2PM power monitoring shows significantly different wattage on the two channels even when identical loads are connected. One channel might show 100W while the other shows 80W for the same light fixture. The power imbalance affects your energy tracking accuracy and may indicate a wiring issue.

hard 20-30 minutes 68 views

Official Shelly Support Resources

Official Website Support Center