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

  1. Turn the air conditioner off via the remote or unit switch.
  2. Switch off power at breaker or unplug the unit if accessible.
  3. Wait about 1 minute.
  4. Restore power and restart the unit to see if the code reappears.

Technician Only Professional inspection and repair

  1. Measure refrigerant pressure and verify correct charge level.
  2. Check outdoor unit thermistors and sensor connections for continuity and correct placement.
  3. Test outdoor unit high‑pressure and temperature controls for proper operation.
  4. Replace failed sensors or correct refrigerant charge and retest system.

Parts needed: Refrigerant charge (if incorrect), Outdoor unit thermistors/sensors, Pressure/temperature controls

🛑 When to Call a Pro:
  • 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

Technical Specifications

wattage N/A
component Communication Control Board
resistance N/A
part_number DAIKIN 4B1234567
voltage_rating 24V AC

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: 2026-07-07

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