V Serial Number [portable] - Lg Lats Multi

LG uses a standard nomenclature for its HVAC serial numbers, which usually consist of a combination of letters and numbers. Serial Digit Position Example (e.g., ) 1st Digit Year of Manufacture 8 (2008 or 2018) 2nd & 3rd Digits Month of Manufacture 04 (April) 1st Letter Country of Origin K (Korea) Following Digits Unique Identifier CPY43321 (Internal tracking) Determining the Decade

The serial number for LG Multi V systems is always listed on the unit's .

LG uses a standardized nomenclature to embed manufacturing details within the serial number string (e.g., 804KCPY43321 First Digit (Year of Manufacture):

Helps identify if your Multi V unit requires specific software or firmware revisions. Lg Lats Multi V Serial Number

If you are replacing a main PCB, LG tech support will ask for these four characters to ensure you get the exact bootloader version.

If you see 810 or 701 in North America, it is genuine LG. Beware of grey-market units with 901 codes—they may not have UL certification for the US.

. In some configurations, the label may be behind a removable service panel. Indoor Units (Evaporators): Generally located on the bottom right side LG uses a standard nomenclature for its HVAC

The app shows a serial number that starts with 999 (non-standard). Cause: Someone replaced the main PCB without transferring the original serial number via the service remote. Fix: You must use the LG Service Remote (model PDRYCB200) to manually rewrite the serial number to match the outdoor unit’s physical tag. Failure to do this will void future warranty claims.

If the physical label is faded (common on rooftop units exposed to UV and salt air), you can retrieve the serial number via the or LG Smart HVAC mobile app using the following method:

This indicates the final digit of the year (e.g., "8" could mean 2018 or 2008). To determine the decade, check the Model Number If you are replacing a main PCB, LG

If you need help decoding a specific unit, you can contact LG Support or consult with your local HVAC contractor. If you'd like, let me know:

Note: They skip I , O , and Q to avoid confusion with numbers 1, 0, and 9.