If your WiZ lights are working perfectly in the WiZ app but won't respond to Google Home commands or appear offline, don't worry. This is a common issue caused by a broken link between the WiZ and Google services. This guide provides a step-by-step troubleshooting sequence to restore full voice and app control.
Table of Contents
- Quick Overview of the Fix
- Step-by-Step Troubleshooting Guide
- Addressing Underlying Wi-Fi Issues
- When to Contact Support
Quick Overview of the Fix
The problem is almost never with the physical bulb since it works in the WiZ app. The issue lies in the cloud-based connection between WiZ's servers and Google's servers. Fixing it typically involves refreshing this link through a specific sequence of steps.
Step-by-Step Troubleshooting Guide
Follow these steps in order. Start with the simplest solution before moving to more involved ones.
Step 1: Reboot Everything (The Power Cycle)
A full system restart can clear temporary glitches.
- Unplug your Wi-Fi router and modem.
- Unplug all Google Home or Nest speakers/displays.
- Power off the unresponsive WiZ lights at the wall switch.
- Wait for 3 full minutes.
- Plug in your modem and router first. Wait for them to fully boot up.
- Plug in your Google speakers.
- Turn the WiZ light switches back on.
- Restart your smartphone.
Step 2: Sync Devices in Google Home
Force Google to refresh its device list from WiZ.
- Open the Google Home app.
- Try controlling the light. If it's still unresponsive, use the voice command: "Hey Google, sync my devices."
- Wait a moment and check if the light now appears and is responsive.
Step 3: Re-Link Your WiZ Account
This is the most effective fix for persistent disconnection issues. It re-establishes the core link between services.
- Open the Google Home app and tap your profile picture.
- Go to Works with Google.
- Find and select the "WiZ" service from your list of connected services.
- Tap Unlink account or Disconnect to remove it.
- Return to the main "Works with Google" page and tap Add service.
- Search for and select "WiZ".
- Log into your WiZ account when prompted and follow the steps to re-link. All your rooms and lights should re-appear in Google Home.
Addressing Underlying Wi-Fi Issues
Sometimes, the disconnection is triggered by network problems. Check these common Wi-Fi culprits:
- 2.4 GHz Network Only: WiZ lights connect exclusively to 2.4 GHz Wi-Fi bands. Ensure your phone is on the same network during setup and troubleshooting.
- Weak Signal or Router Load: A poor signal or a router that has hit its device connection limit can cause drop-offs. Try moving the bulb closer to the router or rebooting the router.
- Network Changes: If you recently changed your Wi-Fi name (SSID) or password, the bulbs will be disconnected. You must set them up again in the WiZ app first before they can work with Google Home.
- Multiple Access Points: If you use mesh Wi-Fi or extenders, a bulb might struggle between signals. Try connecting it to the network of the closest access point for stability.
When to Contact Support
If you have completed all steps—including a full account re-link—and the lights remain unresponsive in Google Home, it's time for expert help. Use the chat function within the WiZ app to contact their customer support for further diagnosis.