LG Heat Pump Error Code E241

E241 indicates an open or short circuit fault in the PWM discharge temperature sensor on the outdoor unit. The control board detects this when the sensor voltage rises above 4.95V or drops below 0.5V, representing out-of-range temperature readings below -30°C or above 151°C respectively. The error only activates when outdoor ambient temperature is above -10°C. The system shuts down to prevent operating without reliable discharge temperature data.

No. The discharge temperature sensor protects the compressor by monitoring refrigerant temperatures at the outlet. Without accurate sensor data, the system cannot detect an overheating condition that could damage or destroy the compressor. The unit will typically shut itself down when this error is active, and attempting to bypass or reset it repeatedly without fixing the root cause risks serious and expensive compressor damage.

A power reset may temporarily clear the E241 code, but if the underlying sensor fault still exists, the error will return once the control board re-evaluates the sensor signal. Resetting the unit without addressing the root cause does not fix the problem and can lead to repeated compressor shutdowns. The sensor connector and wiring should be inspected and the sensor resistance measured before relying on any reset.

A knowledgeable DIYer can inspect the sensor connector for looseness, corrosion, or visible wiring damage, and can use a multimeter to measure resistance across the sensor terminals to determine if the sensor has failed. Replacing the discharge temperature sensor is a relatively straightforward component swap if you can source the correct part. However, if the fault points to the outdoor control board or involves refrigerant system components, a licensed technician should perform the repair.

If the fix is simply reseating a loose connector, the cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing the discharge temperature sensor itself usually costs $150 to $350 including parts and labor. If the outdoor control board has failed, repair costs can rise to $400 to $900 or more depending on the model and local labor rates.