Daewoo Air Conditioner Error Code 2 blinks

Two blinks on a Daewoo air conditioner signals a fault with the indoor coil sensor, the outdoor coil sensor, or the compressor and its electrical components. The unit continues to operate in a reduced mode, cooling at a fixed setpoint of 18°C rather than the user-selected temperature. The specific fault source must be diagnosed by testing the sensors and monitoring compressor performance.

The unit is designed to continue operating in a failsafe mode at 18°C when this code is active, so it is not immediately dangerous to run it temporarily. However, continued operation without resolving a compressor fault can cause additional wear or damage to electrical components. It is best to have the unit diagnosed promptly rather than relying on failsafe mode for extended periods.

Repair costs vary depending on the fault source. Replacing a coil temperature sensor is generally a lower-cost repair, typically ranging from around $50 to $150 including parts and labor. Compressor repairs or replacements are significantly more expensive, often ranging from $300 to $800 or more depending on the unit size and the extent of electrical damage. A diagnostic service call is the best way to get an accurate estimate for your specific situation.

Checking sensor wiring connectors for looseness or corrosion is within reach for a knowledgeable DIYer and requires no special tools. However, measuring thermistor resistance accurately requires a multimeter, and diagnosing compressor faults involves working with refrigerant and high-voltage components that require a licensed technician. If the coil sensors and their wiring appear intact, professional service is the appropriate next step.

A power cycle may temporarily clear the displayed code, but if the underlying fault, whether a failed sensor or a compressor issue, still exists, the error will return once the unit attempts normal operation again. The 5-minute compressor runtime check means the fault could reappear within minutes of restarting. A reset is not a repair, and the root cause must be addressed to permanently clear the code.