Daewoo Air Conditioner Error 1

⚡ Quick Answer: The Daewoo air conditioner error code E1 indicates a communication failure between the indoor and outdoor units. This prevents proper exchange of cont... ✅ DIY Fixable

What Does Error 1 Mean?

The Daewoo air conditioner error code E1 indicates a communication failure between the indoor and outdoor units. This prevents proper exchange of control and sensor information, resulting in the AC stopping cooling or heating. Users may notice the E1 code displayed, and the outdoor unit may fail to start, necessitating troubleshooting or professional assistance.

Common Symptoms:

  • AC stops cooling or heating and displays E1 on panel
  • Indoor and outdoor units fail to coordinate operation
  • Outdoor unit may not start with E1 displayed

Possible Causes

  • Communication failure between indoor and outdoor units (medium)
  • Control board communication circuit fault (low)

How to Fix Error 1

DIY Fix Basic user troubleshooting for E1

  1. Turn off the air conditioner and disconnect power for at least 5–10 minutes to reset system.
  2. Check that the outdoor unit and indoor unit display panels are free of obstruction and that the unit has power.
  3. Visually inspect the outdoor and indoor unit connecting cable (communication line) for visible damage or kinks.
  4. Ensure connectors are fully plugged in at both indoor and outdoor units if easily accessible without disassembly.

Technician Only Technician diagnosis and repair of E1 communication fault

  1. Use diagnostic tools to check continuity and signal on the communication cable between indoor and outdoor units.
  2. Inspect and replace damaged communication wiring or connectors as needed.
  3. Test indoor and outdoor control boards for proper communication signal handling.
  4. Confirm stable power supply voltage and check for interference or grounding issues that could affect communication.

Parts needed: communication cable, wire connectors, indoor/outdoor control boards

🛑 When to Call a Pro:
  • If communication wiring shows physical damage that cannot be safely accessed
  • If resetting and basic inspection do not clear the error and unit remains non‑functional
  • If there are signs of electrical damage (burn marks, melted connectors)

Next step

Choose the next step for 1

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

Typical part-only price
$20 - $120
DIY difficulty
Medium
Estimated time
30-90 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Model number required

Model-compatible Air Conditioner parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Air Conditioner Fin Cleaner

For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.

View maintenance supply
Maintenance supply

Model-Compatible Washable AC Filter

A reusable filter option only where the appliance supports one. Match the full model, dimensions, and filter specification.

Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.

Find one that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Technical Specifications

wattage 1500W
component Control Board
resistance 5-15 ohms
part_number DAEWOO-AC-CB-001
voltage_rating 220V AC

Common Questions

What does 1 error mean on daewoo air conditioner?

The E1 error indicates a communication failure between the indoor and outdoor units.

Can I fix daewoo air conditioner 1 error myself?

Yes, you can reset the system and check for visible cable damage as a first step.

How much does it cost to fix 1 error?

Repair costs can range from $50 to $300+, depending on parts and labor.

When should I call a technician for 1?

Call a technician if you find physical damage to wiring or if the error persists after basic troubleshooting.

Data last verified: 2026-07-25

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