LG KNUAB121A Wall Mounted High Efficiency Indoor Unit with 12000 BTU Cooling Capacity, 13600 BTU Heating Capacity and Remote Control in White

LG's devotion to providing efficient ductless solutions can be seen across the Multi F line of indoor units. Their Standard line of wall mounted mini split units are the perfect blend of versatility and capability for nearly any application. Quiet operations and a clean design make the unit a smart addition for all types of spaces from bedrooms to living rooms to garages. With a variety of operating modes and helpful functions, this well-rounded mini split indoor unit is an easy choice for any system.

• Built-In Wi-Fi
• Jet Temperature Control
• Sleep Mode

Enhanced Connectivity

LG's new R-32 mini split units require a 5-conductor cable (Not Included) instead of the standard 4-conductor, improving communication reliability and enabling a new leak detection feature.

Air Flow Options

This unit gives you two options for automating air flow. In Swing Mode, the unit will rotate through all four air flow directions to ensure consistent comfort in every corner of your room.

Quiet Design

The unit can operate at volumes as low as 27 dB thanks to a combination of cutting edge components. LG utilizes a cross flow fan design that reduces noise levels by limiting the surface pressure of air flow.

Self-Cleaning Coil

The unit features a self-cleaning heat exchanger coil that automatically removes dirt and moisture. This helps to prevent unpleasant odors and to combat the formation of mold.

Automated Operation

Auto operation mode continually compares your zone's current and desired temperatures and uses that data to intelligently adjust the unit's fan speed and refrigerant flow to provide optimal comfort.

Dehumidify

LG's indoor units include a dehumidifying operation mode. In this mode, the unit's internal sensors monitor temperature and modify the set point and fan speed to remove moisture from the air.

Improved Air Quality

The unit uses a dual filtration system to keep your air clean. A washable anti-fungal filter protects against dust and bacteria, while a 3M Micro Protection Filter captures microscopic irritants for pristine air quality.

Hot-Start

When the Hot-Start function is enabled, the unit's fan will not engage until the outdoor condenser has had the opportunity to warm the indoor coil. This prevents the unit from blowing cold air during heating operations.

*Note Outdoor Unit Required to Operate

Matching Products

• Matching Single Zone Outdoor Unit KUSAB121A
• Matching 18000 BTU Multi-Zone Outdoor Unit KUMXB181A
• Matching 24000 BTU Multi-Zone Outdoor Unit KUMXB241A
• Matching 30000 BTU Multi-Zone Outdoor Unit KUMXB301A
• Matching 36000 BTU Multi-Zone Outdoor Unit KUMXB361A
• Matching 48000 BTU Multi-Zone Outdoor Unit KUMXB481A
• Matching 54000 BTU Multi-Zone Outdoor Unit KUMXB541A
• Matching 60000 BTU Multi-Zone Outdoor Unit KUMXB601A
• Matching 18000 BTU LGRED Multi-Zone Outdoor Unit KUMXA181A
• Matching 24000 BTU LGRED Multi-Zone Outdoor Unit KUMXA241A
• Matching 30000 BTU LGRED Multi-Zone Outdoor Unit KUMXA301A
• Matching 36000 BTU LGRED Multi-Zone Outdoor Unit KUMXA361A
• Matching 42000 BTU LGRED Multi-Zone Outdoor Unit KUMXA421A
• Matching 48000 BTU LGRED Multi-Zone Outdoor Unit KUMXA481A

Why Buy LG KNUAB121A Wall Mounted High Efficiency Indoor Unit

• Quiet Operation: Designed with a brushless DC fan motor, the unit delivers low-noise performance for a peaceful indoor environment.
• Energy Efficiency: Inverter technology dynamically adjusts compressor speed, providing effective heating and cooling while reducing energy consumption.
• Smart Features: Built-in Wi-Fi enables seamless integration with the LG SmartThinQ app, offering remote control and monitoring from your smartphone or tablet.
• Enhanced Comfort: Jet Cool and Jet Heat modes deliver rapid temperature changes, while Auto mode maintains consistent comfort by adjusting settings based on room conditions.
• Improved Air Quality: A dual filtration system includes a washable anti-fungal filter for larger particles and a 3M Micro Dust Filter to capture fine airborne contaminants.
• Convenient Operation Modes: Equipped with a 24-hour timer, Auto mode, and Sleep Mode to enhance comfort and optimize energy use throughout the day and night.
• Self-Cleaning Coil: The unit’s heat exchanger automatically eliminates dirt and moisture, supporting cleaner operation and longer service life.
• Reliable Communication: A 5-conductor cable enhances communication with the outdoor unit and enables advanced features like refrigerant leak detection.
• Versatile Use: Compatible with LG’s Multi F systems, it supports both single-zone and multi-zone configurations for flexible installation.

• Zoned Comfort: Part of a ductless mini-split setup, this unit allows for targeted temperature control in individual rooms or areas.

Frequently Asked Questions

Q: What is the "Hot-Start" feature on the KNUAB121A?

A: The Hot-Start function activates in heating mode to prevent cold air from blowing. It delays the indoor fan until the heat exchanger reaches a warm temperature.

Q: Does the KNUAB121A include a self-cleaning function?

A: Yes, it features a self-cleaning indoor coil that helps prevent mold growth and unpleasant odors by automatically removing moisture and dirt from the coil.

Q: What accessories are needed for installing the KNUAB121A?

A: The following field-supplied accessories are required when installing this indoor unit with a compatible LG outdoor condenser:

• Line Set: Insulated refrigerant tubing; a 1/4" x 3/8" line set is recommended for this 12,000 BTU model.
• Drain Tubing: For condensate removal.
• Connecting Wire: Powers and links the indoor and outdoor units for communication.

Q: Can the KNUAB121A be used in multi-zone systems?

A: Yes, the KNUAB121A is part of LG's Multi F Series and is compatible with both single-zone and multi-zone system configurations.

Q: What should I do if an error code appears on the display?

A: Refer to the owner’s manual for specific troubleshooting steps. Common error codes include:

• CH 61: Indicates overheating of the outdoor unit’s heat exchanger, usually due to restricted airflow.
• CH 21 / CH 29: May signal problems with the outdoor unit’s compressor or inverter PCB.

Q: How often should the air filters be cleaned?

A: Clean the washable pre-filter at least once a month to ensure optimal airflow, efficiency, and indoor air quality.

Q: What should I do if the remote control stops working?

A:

• Replace the batteries with fresh ones.
• Check the circuit breaker to ensure it hasn’t tripped.

• If the issue persists, further inspection or professional service may be required.