Daikin Air Conditioner Error E1-00

⚡ Quick Answer: The Daikin Air Conditioner E1-00 error indicates a communication failure between the indoor and outdoor units, causing the unit to stop operating. Thi... ✅ DIY Fixable

What Does Error E1-00 Mean?

The Daikin Air Conditioner E1-00 error indicates a communication failure between the indoor and outdoor units, causing the unit to stop operating. This may result from issues such as a malfunctioning outdoor unit PCB or power-related problems. A blinking display is often visible, and the outdoor unit may not start.

Common Symptoms:

  • Unit stops operating with E1 displayed
  • Communication fault indicated between indoor and outdoor units
  • Outdoor unit does not start

Possible Causes

  • Communication failure between indoor and outdoor units (medium)
  • Outdoor unit PCB (printed circuit board) malfunction (medium)
  • Power-related issues (voltage fluctuations / transient interruptions) (medium)

How to Fix Error E1-00

DIY Fix Basic Inspection and Reset

  1. Turn off the air conditioner and disconnect power at the breaker or plug.
  2. Wait at least 1 minute then restore power to see if the error clears.
  3. Visually inspect accessible wiring connections between indoor and outdoor units for obvious damage or disconnection.

Technician Only Professional Diagnosis and Repair

  1. Check and measure continuity and integrity of communication wiring between indoor and outdoor units.
  2. Inspect and test outdoor unit printed circuit board and replace if defective.
  3. Verify supply voltage stability and address any electrical supply issues.

Parts needed: Outdoor unit PCB / control board, Communication wiring harness

🛑 When to Call a Pro:
  • If the error persists after a basic reset and visual check
  • If there are signs of electrical smell, smoke, or overheating
  • If you are not comfortable handling electric wiring inspections

Technical Specifications

wattage N/A
component Control Board
resistance N/A
part_number DAIKIN 4B200A
voltage_rating 230V AC

Common Questions

What does E1-00 error mean on Daikin Air Conditioner?

The E1-00 error means there's a communication failure between the indoor and outdoor units.

Can I fix Daikin Air Conditioner E1-00 error myself?

Yes, you can perform a basic reset and visually inspect wiring connections.

How much does it cost to fix E1-00 error?

Repair costs range from ¥15,000 to ¥60,000+, depending on parts and region.

When should I call a technician for E1-00?

Call a technician if the error persists after a reset or if you notice electrical issues.

Sources & References

Data last verified: 2026-07-07

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