Daikin Air Conditioner Error H0-00

⚡ Quick Answer: The Daikin Air Conditioner error code H0-00 signifies a communication failure between the indoor and outdoor units, often resulting in the unit not co... ✅ DIY Fixable

What Does Error H0-00 Mean?

The Daikin Air Conditioner error code H0-00 signifies a communication failure between the indoor and outdoor units, often resulting in the unit not cooling. This may stem from a malfunction in the sensor system that controls the compressor or related circuit issues. Symptoms typically include the display of error H0-00, with fans potentially running while the compressor remains inactive. A reset may help temporarily, but persistent issues should be addressed by a professional.

Common Symptoms:

  • Unit stops operating or compressor does not start
  • Fans may run while compressor remains inactive
  • Error H0‑00 displayed on remote or indoor unit display

Possible Causes

  • Sensor circuit malfunction affecting compressor control (medium)

How to Fix Error H0-00

DIY Fix Basic Checks and Restart

  1. Turn off the air conditioner using the remote controller.
  2. Switch off power at the breaker for at least 5–10 minutes to allow the system to reset.
  3. Restore power and attempt to restart the unit.
  4. Observe if the error reappears.

Technician Only Inspect Sensor Circuits and Connections

  1. Use diagnostic tools to check continuity and resistance values of compressor‑related sensors (e.g., temperature sensors for suction, discharge pipe, heat exchanger).
  2. Inspect sensor harnesses and connectors for damage, corrosion, or loose contacts.
  3. Verify outdoor unit sensor board and compressor control signals.
  4. Replace any defective sensors or repair harness/connectors as needed.

Parts needed: Temperature sensors (suction, discharge pipe, heat exchanger), Sensor harness/connectors, Outdoor unit sensor/PCB interfaces

🛑 When to Call a Pro:
  • If the error reappears after a proper restart attempt
  • If you are not comfortable handling electrical diagnostics
  • If sensors or wiring show signs of damage or intermittent connection

Technical Specifications

wattage N/A
component Control Board
resistance N/A
part_number DAIKIN 4B227A
voltage_rating 220V AC

Common Questions

What does H0-00 error mean on Daikin Air Conditioner?

H0-00 indicates a communication failure between indoor and outdoor units, often due to sensor malfunction.

Can I fix Daikin Air Conditioner H0-00 error myself?

Yes, you can try restarting the unit and checking for basic issues before calling a technician.

How much does it cost to fix H0-00 error?

Repair costs for H0-00 can range from ¥5,000 to ¥30,000+, depending on parts and region.

When should I call a technician for H0-00?

Call a technician if the error persists after a restart, or if you're uncomfortable with electrical diagnostics.

Sources & References

Data last verified: 2026-07-01

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