LG Air Conditioner Error Code 232

Error code 232 on an LG air conditioner indicates a transmission error between HR unit 8 and the outdoor unit. This means the two components have lost their communication link and cannot exchange the signals needed to operate correctly. The fault is specific to HR unit 8 in a multi-zone heat recovery configuration. It requires inspection of the wiring and PCB for that unit.

Error code 232 is a communication fault rather than a direct safety hazard, but it does disable proper coordination between HR unit 8 and the outdoor unit. The system may shut down or limit operation to protect components. You should avoid attempting to bypass the error and have a technician inspect the wiring, since damaged cables in proximity to power lines can pose an electrical risk during inspection.

Repair costs depend on the root cause identified during diagnosis. If the issue is simply loose or corroded terminal connections, labor costs alone may range from around $75 to $200 depending on your location and service provider. If a transmission cable needs replacement, parts and labor could range from $150 to $400. Replacing the HR unit 8 PCB is the most expensive scenario, with parts and labor typically ranging from $300 to $700 or more for a commercial-grade heat recovery system.

Start by checking all power cable and transmission cable connections between HR unit 8 and the outdoor unit, ensuring terminals are tight, correctly connected, and free of corrosion. Next, observe the green LED on the HR unit 8 PCB to see if it is blinking, which indicates active communication. If the LED is not blinking and wiring checks out, the PCB for HR unit 8 may need to be replaced. A qualified HVAC technician should perform these checks due to the voltage levels involved.

A power reset may temporarily clear the error display, but the fault will return if the underlying communication issue between HR unit 8 and the outdoor unit is not corrected. Resetting without addressing loose connections, damaged wiring, or a failed PCB will not resolve the problem. Persistent reappearance of code 232 after a reset confirms that a physical inspection and repair are needed.