Error code guide

WiZ bulb shown offline

The bulb no longer responds in the WiZ V2 app while the wall switch still powers it.

Symptom: grey or offline status in WiZ V2.

Likely causes: migration from WiZ V1 incomplete; router password or SSID changed; partial reset; phone on guest Wi-Fi.

Steps

Use the WiZ V2 app (not the legacy one).
Re-run Wi-Fi setup (pairing mode on the bulb).
Keep the wall switch ON.
Ensure the router broadcasts 2.4 GHz Wi-Fi (WiZ does not join 5 GHz-only networks).
Several bulbs offline: reboot the router.

Support: wizconnected.com. Difficulty 2/5 · about 10–20 min · £0.