LG HVAC Error Code 32

Error code 32 means the inverter compressor discharge pipe temperature has reached or exceeded 105°C (220°F), which is the system's protective shutdown threshold. The discharge pipe carries hot, high-pressure refrigerant gas away from the compressor, and temperatures this high indicate the compressor is under severe stress. The most common cause is a low refrigerant charge, though high-head pressure conditions can also trigger this fault. The system shuts down automatically to prevent compressor damage.

No, you should not continue operating the unit while this fault is active. The system shuts down automatically to protect the compressor, and attempting to override or repeatedly restart it without resolving the underlying cause risks permanent compressor failure. A damaged compressor is one of the most expensive repairs in an HVAC system, so addressing the fault promptly is strongly recommended.

Resetting the unit may temporarily clear the fault and allow the system to restart, but the error will return if the underlying cause has not been corrected. If the discharge temperature rises above 105°C (220°F) again, the system will shut down again. Repeatedly resetting without addressing the root cause, particularly a low refrigerant charge, increases the risk of compressor damage. A proper repair should be completed before returning the unit to regular operation.

Some preliminary checks are safe for a homeowner, such as clearing debris from around the outdoor unit and ensuring the condenser coil is clean and airflow is unobstructed. However, checking and correcting refrigerant charge requires EPA Section 608 certification and proper equipment, so that portion of the repair must be performed by a licensed HVAC technician. Testing the discharge pipe thermistor with a multimeter is within reach for a knowledgeable DIYer if the system is safely powered down.

Repair costs vary widely depending on the cause. A refrigerant recharge by a technician typically ranges from $150 to $400 depending on refrigerant type and the amount needed. Replacing the discharge pipe thermistor is generally a lower-cost repair, often in the $100 to $250 range including labor. If the compressor has already sustained damage from operating at high temperatures, replacement costs can range from $800 to $2,500 or more depending on the unit.