Hi! I understand that your SmartHome app (MSmartHome) controls your U-Shaped Midea air conditioner but is not controlling your Midea 12000 unit. Let's see how we can get your 12000 model connected and controllable through the app.

To start, could you please confirm a couple of things for me?
1. Is the Midea 12000 unit a smart-enabled model with WiFi or Bluetooth control capability?
2. Are you trying to connect it over WiFi or Bluetooth through the SmartHome app?
3. Have you tried adding the 12000 unit to the app manually or using auto-discovery?
4. Are both units (U-Shaped and 12000) on the same WiFi network and within Bluetooth range?

Often, specific models like the Midea 12000 may require manual setup or firmware updates to be fully compatible with the app. Sometimes Bluetooth-only connection works but WiFi needs extra steps.

Here’s a step-by-step I recommend:
1. Check compatibility and app version: Confirm your SmartHome app is updated to the latest version from the Google Play Store. Also, ensure your 12000 is a Smart model as some older models do not support app control.
2. Reset the AC WiFi module (if applicable): Turn off the unit, then hold the WiFi button (check your manual) for several seconds until the LED indicator blinks to reset the WiFi connection.
3. Connect via WiFi again: Open the SmartHome app and try adding the 12000 unit. Use “manual add” if auto-discovery does not find it. Enter your WiFi details carefully (2.4 GHz band is usually required).
4. Try Bluetooth pairing: Some units only connect via Bluetooth initially and then switch to WiFi. Follow pairing instructions in the manual.
5. Ensure the phone’s location permission is ON: On Android 10, some Bluetooth and WiFi scanning require location services enabled for device discovery.
6. Check network settings: Ensure your router’s settings allow device connections and no firewall or MAC filter blocks the AC.

If the 12000 unit still does not show up or is not controllable:
- It may require an app firmware update for support.
- Check the Midea user manual specific to your 12000 model for special connection instructions.
- Reach out to Midea support to verify your model supports MSmartHome app control.

Would you like me to guide you through the manual setup steps in the app? Or do you already know if the 12000 is WiFi/Bluetooth capable? Let me know!

Are you satisfied with this plan to resolve the issue so far?