LG Air Conditioner Sub PCB Assembly - EBR89620801

Restore full communication and specialized functions to your cooling system with the LG Air Conditioner Sub PCB Assembly (EBR89620801). Acting as an essential intermediary, this secondary circuit board manages supplementary operations such as display communication, sensor feedback, or peripheral component control. If your air conditioner is experiencing partial power loss, specific feature failures (like an unresponsive display or louver), or triggering secondary communication error codes, replacing a faulty sub PCB is often the necessary step to restore complete operational harmony.

Engineered with advanced circuitry and high-quality electronic components, the EBR89620801 is built to provide stable signal relay and precise power distribution. Its durable design ensures that complex data seamlessly transfers between the main control board and external modules, maintaining the peak energy efficiency and reliable performance of your LG unit.

1. Safety Protocol: Completely shut off the air conditioner and unplug it from the wall outlet, or turn off the dedicated circuit breaker at your electrical panel.
2. Access the Control Box: Open the front intake grille or remove the outer casing to locate the internal electronic control box where the secondary boards are housed.
3. Map the Wiring: Before disconnecting any cables, take a clear, detailed photograph of the existing wiring harnesses and their respective terminal connections on the old sub board.
4. Remove the Faulty PCB: Carefully unplug all wire connectors and ribbon cables, taking care not to damage the delicate pins. Remove the mounting screws or release the plastic clips securing the EBR89620801 board to the chassis.
5. Install the New Board: Place the new sub PCB assembly into the designated mounting bracket. Reconnect all wiring harnesses exactly as they appeared in your reference photo.
6. Reassemble and Test: Reattach the control box cover and outer panels. Restore power to the unit and test the specific functions (like the display or auto-swing) to confirm full system restoration and proper communication.
7. Compatible with select LG air conditioner models, this OEM-quality sub PCB guarantees exact factory specifications for dependable, long-term performance.

1. AC Sub PCB Assembly – Part number EBR89620801
2. Restores Secondary Functions – Manages peripheral components like displays, sensors, or louvers
3. Resolves Communication Errors – Fixes specific fault codes and partial system unresponsiveness
4. Advanced Circuitry – Designed for stable data relay and safe electrical distribution
5. Genuine OEM Part – Ensures exact electrical compatibility with the main control board
6. Durable Design – Built to withstand internal operational temperatures for long-term reliability