Samsung Air Conditioner Error Code E230

E230 indicates a compressor OLP (Overload Protector) sensor error caused by a short or open circuit in the sensor. The system detects this fault when the sensor voltage goes above 4.95V (corresponding to below -30°C) or below 0.5V (corresponding to above 151°C). This typically happens because the sensor has failed, the wiring is damaged, or the outdoor temperature has dropped below -20°C. The unit shuts down to protect the compressor until the fault is resolved.

No, you should not attempt to bypass or ignore E230. The OLP sensor exists to protect the compressor from temperature extremes, and operating the system without a functioning sensor removes that protection. Continued operation could result in compressor damage, which is a significantly more expensive repair. Turn the system off until the sensor is inspected and replaced if necessary.

A power reset may temporarily clear the E230 error code, but the fault will return if the underlying cause has not been addressed. If the OLP sensor is shorted or open, the system will detect the fault again as soon as it runs a check on startup. A reset alone is not a repair and should only be used as a temporary step while arranging proper diagnosis and service.

Inspecting the wiring harness and connector for obvious damage or loose connections is something a knowledgeable DIYer can attempt after powering the system off completely. However, replacing the OLP sensor requires working inside the outdoor unit and handling refrigerant-side components, which typically requires a certified HVAC technician. It is safest to have a professional handle the repair unless you have specific experience with air conditioner servicing.

If only the OLP sensor needs replacement, parts and labor typically range from around $75 to $200 depending on the unit model and local labor rates. If the outdoor control board is also found to be faulty, costs can rise to a range of $200 to $500 or more. Getting a diagnostic visit from a technician first will help identify exactly which components need to be replaced.