Thermostat frequently disconnects from Wi-Fi; Kasa app shows offline status and WiFi-02 error.

Note: HVAC control usually continues locally even when Wi-Fi is unstable.

• Check signal strength: On your phone, stand next to the thermostat and check Wi-Fi signal bars. If low, move the router closer or add a Wi-Fi extender.
• Reduce interference: Keep the router away from microwaves, cordless phone bases, and thick metal objects. Avoid placing the thermostat directly on a metal duct chase.
• Router channel: Log into your router and set the 2.4 GHz channel to 1, 6, or 11. Avoid auto channel if it frequently changes.
• Limit devices: If many devices are connected, disconnect unused ones or upgrade to a higher-capacity router.
• Firmware updates: Update both the router firmware and the thermostat firmware via the Kasa app if possible.