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Error code reference
Daewoo Air Conditioner Error Codes
46 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
0 blinks (continuous ON blink)Room sensor open or short1Room air thermistor or connector fault (open/short circuit in room temperature sensor or…1 blinkIndoor coil sensor open or short, OR outdoor coil sensor open or short, OR compressor or…1 blink (0.5s cycle)Outdoor coil sensor open or short circuit; unit continues working.1 blink (0.5s interval, 8s cycle)Indoor coil sensor open or short circuit; unit does not work.1 blink (8s cycle)Room sensor open or short circuit; unit continues working with fixed room temperature of…1 blink (8s interval)Indoor coil sensor open or short, or outdoor coil sensor open or short; unit does not…1 blink (8s)Indoor coil sensor open or short circuit; unit does not work.1 blink (ON lamp, 0.5s pattern)Indoor coil sensor open or short, OR outdoor coil sensor open or short; unit does not…1 blink (ON lamp, 8s pattern)Room sensor open or short circuit; unit continues working with room temperature fixed at…1 blink (ON lamp)Room sensor open or short circuit1 times blinkRoom sensor open or short circuit; unit continues working with fixed room temperature of…2Indoor coil thermistor or connector fault (open/short circuit in evaporator temperature…2 blinkCompressor or electrical parts of compressor error, OR gas leak.2 blinksIndoor coil sensor open or short, OR outdoor coil sensor open or short, OR compressor or…2 blinks (0.5s interval, 8s cycle)Outdoor coil sensor open or short, compressor or electrical parts of compressor error, or…2 blinks (0.5s interval)Compressor or electrical parts of compressor error, or gas leak; unit continues working.2 blinks (ON lamp, 0.5s pattern)Outdoor coil sensor open or short, compressor or electrical parts of compressor error, or…2 blinks (ON lamp)Compressor or electrical parts of compressor error, or gas leak; unit continues working.2 times blinkIndoor coil sensor open or short, outdoor coil sensor open or short, compressor or…3Compressor, electrical parts of compressor, or gas leak error4Indoor fan motor, motor connector, or PCB fault.CODE1Room sensor open or short circuitCODE2Indoor coil (I/D) sensor open or short circuitCODE3Outdoor (O/D) sensor open or short circuitCODE4Compressor or electrical parts of compressor errorCODE5Communication error between indoor unit (I.D.U) and outdoor unit (O.D.U), or 4-way valve…CODE64-way valve or electrical parts of 4-way valve errorCODE7Operation mode is different between the two indoor units.continuous blinkUnit does not work due to indoor coil sensor open/short, outdoor coil sensor open/short…continuous ON blinkRoom sensor open or shortContinuous ON lamp blinkRoom sensor open or short circuit; unit continues working with room temperature fixed at…E1Room sensor open or short circuit detected (ON lamp blinks continuously for 8 seconds…E2Indoor coil sensor or outdoor coil sensor open or short circuit (ON lamp does not…E3Compressor or electrical parts of compressor errorE4Gas leak detectedLED 1 time blinkGas leak detected; unit continuously working.LED 3 times blinkCompressor or electrical parts of compressor error; unit continuously works to fix room…LED 8s blinkRoom sensor open or short circuit, indoor coil sensor open or short, or outdoor coil…ON LAMP 1 blink (8s interval)Indoor coil sensor open or short, or outdoor coil sensor open or short; unit does not…ON LAMP 2 blinks (0.5s interval)Compressor or electrical parts of compressor error, or gas leak; unit continues working.ON LAMP Blink (0.5s, 2 times blink)Outdoor coil sensor open or short, compressor or electrical parts of compressor error, or…ON LAMP Blink (8s, 1 times blink)Outdoor coil sensor open or short circuit; unit continues working.ON LAMP Blink (continuous)Room sensor open or short circuit; unit continues working with room temperature fixed at…ON lamp continuous blinkRoom sensor open or short circuitRoom Sensor open/shortRoom temperature sensor is open or shorted; unit continues working with room temperature…
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Common questions
How do I find the error code on my Daewoo Air Conditioner?
Most Daewoo air conditioners show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Daewoo air conditioners. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.