Daewoo Air Conditioner Error Code 2 blink

The 2-blink code indicates either a compressor fault or a refrigerant gas leak. The system detects this by checking whether the indoor coil temperature changes by at least plus or minus 2 degrees Celsius within 5 minutes of startup during Emergency Mode. If that change does not occur, the fault is registered. In heating mode, the unit will default to running continuously at a fixed 18 degrees Celsius setpoint.

The unit will continue to operate in a limited or degraded state depending on the cause, but continued operation with a refrigerant leak or compressor fault can cause additional damage to the system. If a gas leak is present, refrigerant release into the environment is a concern. It is best to shut the unit down and have it inspected promptly rather than running it indefinitely in the fault condition.

A power reset may temporarily clear the displayed fault, but the underlying cause will still be present. If the compressor or refrigerant system issue has not been repaired, the unit will re-enter the fault condition within minutes of restarting, once the 5-minute coil temperature check runs again during Emergency Mode. A reset is not a repair and should only be used as part of a diagnostic process.

Most of the underlying causes require professional tools and certifications. Refrigerant handling requires EPA certification in the United States, and compressor replacement or electrical component testing requires knowledge of high-voltage systems. Checking and replacing a run capacitor is within reach for experienced DIYers, but diagnosing the root cause accurately typically requires manifold gauges and electrical test equipment.

Repair costs vary widely based on the root cause. Capacitor replacement is typically in the range of $75 to $200 including labor. Refrigerant leak repair and recharge can range from $150 to $500 or more depending on leak location and refrigerant quantity needed. Compressor replacement is the most expensive possibility, often ranging from $600 to $1,500 or higher depending on unit size and parts availability.