Samsung Air Conditioner Error Code 320

Error code 320 on a Samsung air conditioner indicates an OLP (Over Load Protector) sensor error, specifically an open circuit or short circuit condition. The OLP sensor is a safety component associated with the compressor, and when its signal falls outside the expected range, the unit shuts down and displays this code. The fault can be in the sensor wiring, the connector, or the sensor itself.

No, you should not continue operating the unit while error code 320 is active. The OLP sensor is a compressor protection device, and bypassing or ignoring this fault could result in compressor overload or damage. The system will typically prevent operation until the fault is resolved, which is an intentional safety feature.

Repair costs vary depending on what needs to be replaced. If only a wiring repair or connector replacement is needed, costs tend to be lower, typically in the range of $75 to $150 for labor. Replacing the OLP sensor itself adds parts cost, generally putting the total repair in the $100 to $300 range depending on the model and local labor rates. If the compressor itself has been damaged due to a prolonged fault, costs can be significantly higher.

A knowledgeable DIYer can start by visually inspecting the OLP sensor wiring for obvious cuts, disconnections, or corrosion, and reseating any loose connectors. However, testing the sensor with a multimeter and accessing the compressor area requires comfort with electrical components and disassembly of the unit. If you are not experienced with HVAC electrical diagnostics, a qualified technician is the safer choice.

A power reset may temporarily clear the code and allow the unit to attempt a restart, but the error will return if the underlying wiring or sensor fault has not been repaired. Resetting without fixing the root cause does not resolve the problem and may delay necessary repairs. The OLP circuit must be inspected and the faulty component corrected for the code to stay cleared.