Daikin Air Conditioner Error J6-00

⚡ Quick Answer: The Daikin Air Conditioner error code J6-00 signals a communication failure between the indoor and outdoor units, often caused by a malfunctioning hea... ✅ DIY Fixable

What Does Error J6-00 Mean?

The Daikin Air Conditioner error code J6-00 signals a communication failure between the indoor and outdoor units, often caused by a malfunctioning heat exchanger thermistor or issues with its wiring. This can prevent the unit from entering cooling or heating modes and may lead to erratic temperature readings. If the issue persists after a power reset, further inspection is necessary.

Common Symptoms:

  • Air conditioner stops operation and displays the J6 code.
  • Unit may not enter cooling/heating properly.
  • Potential abnormal temperature reading behavior sensed by control system.

Possible Causes

  • Heat exchanger thermistor failure (sensor malfunction). (high)
  • Thermistor connector or wiring connection fault. (medium)
  • Control board (PCB) circuit issue related to thermistor signal handling. (medium)

How to Fix Error J6-00

DIY Fix Power Reset and Basic Check

  1. Turn off the air conditioner and disconnect power (unplug or turn off dedicated breaker).
  2. Wait approximately 5–10 minutes to allow internal systems to reset.
  3. Restore power and attempt to restart the unit.

Technician Only Inspect and Replace Faulty Sensor or Components

  1. Perform diagnostic with proper HVAC tools (multimeter, service app, etc.) on the heat exchanger thermistor.
  2. Check thermistor wiring harness and connector for continuity and secure connection.
  3. Replace defective thermistor sensor if readings are out of specification.
  4. Inspect control board circuits related to thermistor signal for faults and repair/replace if needed.

Parts needed: Heat exchanger thermistor sensor, Thermistor wiring harness/connectors, Control board (if necessary)

🛑 When to Call a Pro:
  • If the reset procedure does not clear the code.
  • If the error reoccurs after restart.
  • If internal inspections show wiring damage or suspect sensor issues.

Technical Specifications

wattage N/A
component Communication cable
resistance N/A
part_number DAIKIN 937000A
voltage_rating 230V AC

Common Questions

What does J6-00 error mean on Daikin Air Conditioner?

J6-00 indicates a communication failure due to thermistor malfunction, preventing proper operation.

Can I fix Daikin Air Conditioner J6-00 error myself?

Yes, you can try a power reset by disconnecting and reconnecting the power.

How much does it cost to fix J6-00 error?

Repair costs range from ¥10,000–¥50,000 for sensor replacement to ¥30,000–¥100,000 for control board repairs.

When should I call a technician for J6-00?

Call a technician if the error persists after a reset or if there are signs of wiring damage.

Sources & References

Data last verified: 2026-07-01

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