Why Is My Smart Thermostat Not Connecting to Wi-Fi?

Most Wi‑Fi failures come from weak signal, an incorrect password, a 5 GHz‑only network, or low/control power from a missing or loose C‑wire adapter. Router security settings can also block pairing. Summers installs and configures smart thermostats in Bloomington and Normal.

• Confirm internet works on your phone.
• Recheck the 2.4 GHz SSID and password.
• Move the router closer or add a 2.4 GHz guest network.
• Power‑cycle router and thermostat.
• Verify C‑wire or power extender is connected.

Updated: 2025-12-30 00:00:00

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