Daewoo Air Conditioner Error Code 2 times blink

The 2 times blink code on a Daewoo air conditioner signals a fault in one of four areas: the indoor coil thermistor, the outdoor coil thermistor, the compressor or its electrical components, or the refrigerant charge level. When any of these conditions are detected, the unit shuts down completely and will not operate. The blinking indicator is the control board's way of communicating that a protective shutdown has occurred and service is required.

No. The unit shuts itself down when this code appears precisely because continued operation would be unsafe or damaging. Running the system with a failed sensor, a compressor fault, or low refrigerant can cause compressor burnout or further refrigerant loss. The unit should remain off until the fault is diagnosed and repaired.

A power reset may temporarily clear the fault display, but the error will return as soon as the control board detects the same problem again. Because this code indicates a real hardware condition such as a failed sensor, compressor issue, or refrigerant loss, the underlying fault must be diagnosed and corrected before the unit will operate reliably. Repeated resets without repair can delay proper service and risk further damage.

Some portions of this diagnosis, such as inspecting wiring harnesses and testing thermistor resistance with a multimeter, are within reach of a skilled DIYer. However, if the fault involves a refrigerant leak or compressor failure, those repairs require certified technician equipment and refrigerant handling credentials. Attempting to work with refrigerant without proper certification is illegal in most jurisdictions and can be dangerous.

Repair costs vary significantly depending on the root cause. A thermistor sensor replacement is typically one of the less expensive repairs, often ranging from $75 to $200 including labor. A refrigerant leak repair with recharge can range from $150 to $500 or more depending on the leak location and refrigerant type. Compressor replacement is the most expensive outcome, often ranging from $500 to $1,500 or higher depending on unit size.