Ensure smooth coordination between system components with the LG Sub PCB Board EBR71503212. This auxiliary control board supports the main PCB by managing secondary electrical signals and communication within the air conditioning system. A faulty sub PCB can lead to irregular operation, communication errors, or reduced cooling efficiency.

Built with precision-engineered electronic components, this sub PCB board ensures stable signal transmission, reliable performance, and long-term durability. It plays a key role in maintaining efficient system coordination and operational stability.

1. Turn off the air conditioner and disconnect power supply completely.
2. Open the control panel or PCB compartment carefully.
3. Disconnect all wiring connections from the existing sub PCB.
4. Remove the faulty board from its mounting position.
5. Install the new EBR71503212 PCB and reconnect all wiring securely.
6. Close the panel and test system operation for proper function.

Compatible with select LG air conditioner models, this OEM-quality sub PCB ensures reliable communication and stable system performance.

• Sub PCB board – part number EBR71503212
• Supports main control board communication functions
• Ensures stable and accurate signal transmission
• High-quality electronic components for durability
• Improves system coordination and efficiency
• Reduces risk of communication errors
• OEM-quality replacement for dependable performance