Daikin Air Conditioner Error F6-00
⚡ Quick Answer: The Daikin Air Conditioner F6-00 error signifies a communication failure between the indoor and outdoor units, commonly caused by high temperature or ... ⚠️ Difficulty Varies
What Does Error F6-00 Mean?
The Daikin Air Conditioner F6-00 error signifies a communication failure between the indoor and outdoor units, commonly caused by high temperature or pressure conditions. This error typically manifests as a blinking display and results in the unit's inability to cool or heat effectively. Potential issues include refrigerant overcharge or faults with outdoor unit thermistors/sensors, impacting performance and safety.
Common Symptoms:
- Display of F6 on remote or unit panel
- Unit stops cooling/heating during operation or at start
- Abnormal high temperature or high pressure detected in outdoor unit
Possible Causes
- Refrigerant overcharge / high pressure condition detected (medium)
- Outdoor unit thermistor/sensor fault or disconnection (medium)
How to Fix Error F6-00
DIY Fix Basic checks and reset
- Turn the air conditioner off via the remote or unit switch.
- Switch off power at breaker or unplug the unit if accessible.
- Wait about 1 minute.
- Restore power and restart the unit to see if the code reappears.
Technician Only Professional inspection and repair
- Measure refrigerant pressure and verify correct charge level.
- Check outdoor unit thermistors and sensor connections for continuity and correct placement.
- Test outdoor unit high‑pressure and temperature controls for proper operation.
- Replace failed sensors or correct refrigerant charge and retest system.
Parts needed: Refrigerant charge (if incorrect), Outdoor unit thermistors/sensors, Pressure/temperature controls
- If F6 persists after power reset
- If there are signs of leakage, abnormal noises, or heat build‑up at outdoor unit
- If you are not trained to work with refrigerant or electrical components
Next step
Choose the next step for F6-00
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
Thermistor
Measures precise temperature changes and sends resistance feedback to the control board.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 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.
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 F6-00 error mean on Daikin Air Conditioner?
F6-00 indicates a communication failure due to high temperature/pressure issues, affecting cooling/heating.
Can I fix Daikin Air Conditioner F6-00 error myself?
Yes, you can try basic checks like resetting the unit and ensuring proper power supply.
How much does it cost to fix F6-00 error?
Repair costs for F6-00 range from ¥10,000 to ¥50,000+ depending on parts and labor.
When should I call a technician for F6-00?
Call a technician if F6 persists after a reset, or if there are signs of leaks, abnormal noises, or overheating.
Data last verified: 2026-07-31
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