Thermostat displays CFG-02 and will not allow heating or cooling until configuration is completed

Steps:

• Ensure stable power: Confirm the thermostat display is stable and not flickering. If it is, resolve power issues first (check C wire and breaker).
• Re-open Kasa app: Open the Kasa app, select the thermostat, and follow any prompts to complete setup. If prompted, re-enter system type, wiring, and Wi‑Fi details.
• Factory reset: If CFG-02 persists, perform a factory reset from the thermostat or via the app, then repeat the full installation and setup process.
• Do not interrupt: During setup, avoid closing the app or cutting power until the thermostat confirms configuration is complete.