LG AC communication modules | KNX, Modbus, WiFi

LG AC communication modules – KNX, Modbus, WiFi

This category includes communication modules designed for LG air conditioners, enabling their integration with building management systems and smart control platforms. The modules support three major communication protocols – KNX, Modbus RTU (RS-485), and WiFi – allowing flexible adaptation to the needs of both residential and commercial installations. These modules provide centralized and automated control of indoor climate, improve energy efficiency, and simplify maintenance processes.

Automatic HVAC control is essential for maintaining thermal comfort in modern buildings. It ensures consistent temperature and humidity regardless of outdoor conditions, while minimizing energy consumption through optimal device operation. Integration with BMS and SCADA systems allows facilities to react dynamically to changing occupancy levels, schedules, or environmental conditions. The result is greater operational efficiency, reduced energy bills, and extended equipment life.

Supported protocols

LG air conditioning communication modules are available in three protocol variants, each with unique benefits and use cases:

• Modbus RTU: Used in industrial automation and SCADA environments. Modules connect to controllers and PLCs via RS-485 and allow reading and writing of all essential HVAC parameters.
• KNX: Ideal for smart buildings and home automation systems. These modules allow air conditioners to be controlled using KNX sensors, logic modules, touch panels, and scheduling. Fully certified by KNX Association.
• WiFi: Enables wireless control using mobile apps and voice assistants. Best suited for residential and small commercial applications where simplicity and convenience are key.

Depending on the specific version, modules may support 1:1 or group control of indoor units. All variants are designed for easy installation and integration, with DIP-switch or software-based configuration, electrical isolation, and flexible mounting options. Most models are compatible with both standard and advanced LG indoor units, including single and multi-split systems as well as VRF.

Main features and benefits

By implementing a communication module, users gain access to full remote management of their LG HVAC units. This includes mode selection, temperature and fan speed adjustment, access to error codes, and feedback on current device status. The modules enable real-time monitoring and can be integrated into automation scenarios such as presence-based operation, energy saving modes, and temperature zoning.

WiFi modules in particular offer intuitive configuration via mobile apps and allow simultaneous control using the original LG remote and a smartphone or tablet. They also support integration with services like Google Assistant, Amazon Alexa, Siri Shortcuts, and IFTTT, making them ideal for smart home environments. Users can easily automate climate behavior based on time, location, or custom triggers.

KNX modules provide deep integration with professional building automation systems. They offer support for KNX datapoints (DPTs), group addresses, and scene control, and can be programmed via ETS software. This allows seamless interaction with lighting, shading, occupancy sensors and more – ensuring full building-wide logic and comfort control.

Modbus versions, on the other hand, are perfect for industrial-grade HVAC integrations. They offer robust operation, proven interoperability with SCADA and PLCs, and straightforward command and feedback structure for HVAC professionals.

How to choose the right module?

We have grouped LG communication modules by protocol and product compatibility to help you choose the correct model faster. Each subcategory contains detailed technical descriptions, wiring diagrams, supported AC unit lists, and manuals to simplify installation and integration.

If you’re unsure which module is suitable for your LG air conditioner or which protocol is the best match for your control system – don’t hesitate to get in touch with our technical team. We’ll help you verify compatibility and recommend the best solution for your installation – contact an expert.

Select the communication module that matches your needs and discover how easily you can connect your LG air conditioner to your preferred automation environment. Optimize performance, ensure comfort, and take full control of your HVAC system.