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
- Turn off the air conditioner and disconnect power at the breaker or plug.
- Wait at least 1 minute then restore power to see if the error clears.
- Visually inspect accessible wiring connections between indoor and outdoor units for obvious damage or disconnection.
Technician Only Professional Diagnosis and Repair
- Check and measure continuity and integrity of communication wiring between indoor and outdoor units.
- Inspect and test outdoor unit printed circuit board and replace if defective.
- Verify supply voltage stability and address any electrical supply issues.
Parts needed: Outdoor unit PCB / control board, Communication wiring harness
- 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
Next step
Choose the next step for E1-00
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
HVAC Control Board
Controls fan, compressor, sensor, and communication functions in the HVAC unit.
- Typical part-only price
- $90 - $320
- DIY difficulty
- Hard
- Estimated time
- 45-120 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.
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.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
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.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
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.
Air Conditioner Fin Cleaner
For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.
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.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
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
- E1 | Skycon Air Pty Ltd Daikin Error Codes (community)
Data last verified: 2026-07-31
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