If you have already downloaded an APK from a suspicious source, delete it immediately and run a malware scan (using Malwarebytes or Bitdefender).

: On certain dual inverter models, the diagnosis can reveal advanced data like EEV (Electronic Expansion Valve) readings and compressor frequency.

LG does not publish a separate APK for Smart Diagnosis. The functionality is wholly contained within the LG ThinQ app (Package name: com.lge.lgremote ). Any file claiming to be a dedicated "Smart Diagnosis APK" is likely:

Smart Diagnosis uses two methods to identify issues:

| Error Code | Meaning | Likely Fix | | :--- | :--- | :--- | | | Room temperature sensor error | Requires technician replacement | | CH 05 | Communication error between indoor and outdoor units | Check wiring connections | | CH 11 | Outdoor unit fan motor error | Reset unit; replace fan motor if persists | | CH 38 | Refrigerant leak (Low pressure) | Seal leak and refill refrigerant | | CL (Display) | Clean filter indicator | Wash the mesh filter behind the front panel |