Wemo Smart Plug Showing No Response in Apple HomeKit

Easy 15-30 minutes

If your Wemo smart plug or switch shows "No Response" in the Apple Home app or won't connect to HomeKit, this guide covers the most common causes and fixes from the community.

Check Basic Connectivity First

Before troubleshooting HomeKit specifically:

  1. Open the Wemo app and verify the device is online there
  2. Try controlling the device from the Wemo app
  3. If it works in Wemo but not HomeKit, the issue is with the HomeKit integration

Reset HomeKit Pairing

The most reliable fix is to remove and re-add the device to HomeKit:

  1. Open the Apple Home app
  2. Long-press (or 3D touch) the Wemo device
  3. Scroll down and tap "Remove Accessory"
  4. Open the Wemo app
  5. Go to the device settings
  6. Look for "Apple HomeKit" or "HomeKit Setup"
  7. Follow the prompts to re-add to HomeKit

One user reported: "I had to remove it from HomeKit completely and re-pair it. After that it's been rock solid for months."

Router and Network Issues

Wemo devices are notoriously sensitive to network configurations:

Check these settings:

  • 2.4GHz WiFi: Wemo devices only work on 2.4GHz networks
  • IGMP Snooping: Try disabling this in router settings
  • mDNS/Bonjour: Must be enabled for HomeKit discovery
  • AP Isolation: Must be disabled so devices can communicate

A community member explained: "Wemo devices use multicast for HomeKit discovery. If your router blocks multicast between devices or has AP isolation enabled, HomeKit will show 'No Response' even though the device works fine in the Wemo app."

Multiple Access Points / Mesh Networks

Mesh WiFi systems can cause HomeKit issues with Wemo:

  • Ensure your HomePod/Apple TV hub and Wemo device are on the same network segment
  • Try temporarily connecting everything to the main router
  • Some mesh systems have "IoT" networks that don't play well with HomeKit

One user found: "My Wemo worked perfectly until I got a mesh system. Had to create a separate 2.4GHz network on the main router for all my Wemo stuff, and now it's stable in HomeKit."

HomeKit Hub Issues

HomeKit requires a hub (HomePod, Apple TV, or iPad) for reliable control:

  1. Open the Home app
  2. Tap the house icon → Home Settings
  3. Scroll down to "Hubs & Bridges"
  4. Check that you have a hub showing as "Connected"

If your hub shows as disconnected:

  • Restart your HomePod or Apple TV
  • Make sure it's signed into the same iCloud account
  • Check that "Home Hub" is enabled in the device settings

Firmware Updates

Outdated Wemo firmware can cause HomeKit compatibility issues:

  1. Open the Wemo app
  2. Go to device settings
  3. Check for firmware updates
  4. Keep the app open during the update process

Several users noted that specific firmware versions caused HomeKit issues: "After updating to the latest firmware, my Wemo Mini finally stopped dropping from HomeKit."

Factory Reset Wemo Device

If nothing else works, try a full factory reset:

For Wemo Mini Smart Plug:

  1. Press and hold the button on the plug
  2. Keep holding until the light blinks amber rapidly (about 5-10 seconds)
  3. Release the button
  4. Set up the device again in the Wemo app
  5. Then add to HomeKit

For Wemo Light Switch:

  1. Press and hold the reset button (small button, may need a paperclip)
  2. Hold until the LED blinks amber
  3. Complete setup in the Wemo app first, then add to HomeKit

Known Wemo/HomeKit Quirks

  • Wemo devices can take up to 30 seconds to respond after a power outage
  • Large numbers of Wemo devices on one network can cause timeouts
  • The first-gen Wemo devices (F7C027) have limited HomeKit support

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