Samsung Air Conditioner Error Code E226

E226 indicates a PWM discharge temperature sensor open or short circuit error on the outdoor unit. The sensor monitors the temperature of refrigerant leaving the compressor, and the control board has detected that the sensor signal is outside the valid range. This error only activates when outdoor ambient temperature is above -10°C. The system shuts down to prevent potential compressor damage from unmonitored operating temperatures.

A reset may temporarily clear the error code, but the fault will return if the underlying problem is not resolved. If the cause is simply a loose connector, reseating it before restarting should clear the code permanently. If the sensor or wiring has actually failed, the error will reappear shortly after the unit attempts to operate.

If the fix is simply reconnecting a loose sensor connector, labor costs for a service call are typically in the range of $75 to $150 depending on your location. If the discharge temperature sensor itself needs replacement, expect parts and labor costs combined to range from $150 to $350. A faulty outdoor PCB is the most expensive scenario, with parts and labor potentially ranging from $300 to $600 or more.

The first step, checking and reseating the discharge temperature sensor connector on the outdoor PCB, is something a knowledgeable DIYer can attempt after powering down the unit. However, if the connector is secure and the fault persists, accurately diagnosing a failed sensor, damaged wiring, or faulty PCB requires a multimeter and some familiarity with electrical testing. In those cases, a certified technician is recommended.

No, you should not attempt to bypass or ignore this error and continue running the unit. The discharge temperature sensor protects the compressor from overheating. Operating without valid sensor data removes that protection and risks serious compressor damage, which is a significantly more expensive repair than resolving the sensor fault.