Daikin Air Conditioner Error E6-00
⚡ Quick Answer: The Daikin Air Conditioner E6-00 error indicates a communication failure between the indoor and outdoor units, often linked to a compressor start-up f... ✅ DIY Fixable
What Does Error E6-00 Mean?
The Daikin Air Conditioner E6-00 error indicates a communication failure between the indoor and outdoor units, often linked to a compressor start-up fault. This issue may cause the air conditioner to fail to start or operate normally, resulting in a flashing display and halted cooling. The system may shut down to protect the compressor from electrical overload or component malfunctions in the outdoor unit.
Common Symptoms:
- Air conditioner fails to start or operate normally when the error appears.
- Outdoor unit stops during operation due to detected electrical or load issue.
- System may shut down to protect compressor.
Possible Causes
- Compressor start‑up fault (medium)
- Compressor or outdoor unit electrical overload/overcurrent (medium)
- Outdoor unit component malfunction (e.g., fan motor, PCB, expansion valve) (medium)
How to Fix Error E6-00
DIY Fix Basic checks and safe power cycling
- Turn off the air conditioner using the remote.
- Switch off the breaker or unplug the unit.
- Wait at least 1–2 minutes.
- Restore power and attempt to restart.
Technician Only Professional diagnostic and repair
- Measure compressor start current and compare with specification.
- Inspect outdoor unit electrical connections, contactors, and PCB.
- Test fan motor, expansion valve operation, and sensors relevant to compressor loading.
- Replace faulty components per diagnostic findings.
Parts needed: Compressor, Outdoor PCB/control board, Fan motor, Expansion valve
- If basic power cycling does not clear the error.
- If the error reappears repeatedly after restart.
- If there are signs of burning smell, smoke, or loud abnormal noises from the outdoor unit.
Next step
Choose the next step for E6-00
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
Compressor
Compresses refrigerant within the sealed cooling system and requires specialized service equipment.
- Typical part-only price
- $180 - $600
- DIY difficulty
- Hard
- Estimated time
- 120-240 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.
HVAC Control Board
Controls fan, compressor, sensor, and communication functions in the HVAC unit.
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
| wattage | N/A |
|---|---|
| component | Control Board |
| resistance | N/A |
| part_number | DAIKIN 4D002A |
| voltage_rating | 220V AC |
Common Questions
What does E6-00 error mean on Daikin Air Conditioner?
E6-00 indicates a communication failure between the indoor and outdoor units, often linked to a compressor issue.
Can I fix Daikin Air Conditioner E6-00 error myself?
Yes, perform basic checks like power cycling the unit and ensuring proper connections.
How much does it cost to fix E6-00 error?
Repair costs are high, involving professional service and potential major part replacements.
When should I call a technician for E6-00?
Call a technician if power cycling doesn't resolve the issue or if the error reappears.
Sources & References
- Daikin split AC error code list (India region) (community)
- Daikin E6 outdoor unit error detailed explanation (community)
Data last verified: 2026-07-22
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