Cync Matter Device Not Connecting or Responding

GE Cync Matter devices work across multiple platforms. This guide covers Matter-specific connectivity issues.

Matter Pairing Failed

1. Ensure device is in pairing mode (blinking)
2. Scan Matter QR code from device label
3. Use numeric setup code if QR fails
4. Controller must support Matter (updated app)
5. Factory reset: Power cycle 5 times quickly

Device Added But Not Responding

1. Matter devices need border router for Thread
2. Cync Matter uses WiFi, not Thread
3. Check WiFi network is 2.4GHz compatible
4. Remove and re-add device if stuck
5. Update controller platform app

Slow Response Times

1. Matter uses local control, not cloud
2. Check WiFi network congestion
3. Reduce number of Matter controllers
4. Restart border router device
5. Update device firmware via Cync app first

Multi-Admin Setup Issues

1. Commission device to primary platform first
2. Share to additional platforms via Multi-Admin
3. Maximum 5 controller fabrics supported
4. Use "Share" option in each platform app
5. All platforms must support Matter 1.2+

Cync App vs Matter Control

1. Some features only available in Cync app
2. Firmware updates require Cync app
3. Schedules can be set in either platform
4. Color scenes may differ between apps
5. Use Cync app for initial setup, then Matter

Home Assistant Matter Integration

1. Requires HA 2023.9 or newer
2. Add Matter integration first
3. Commission device directly to HA
4. Or share from existing controller via Multi-Admin
5. Thread devices need border router for HA