Daikin Air Conditioner Error HJ

⚡ Quick Answer: The Daikin air conditioner HJ error code indicates a communication failure between the indoor and outdoor units, often accompanied by beeping sounds a... ⚠️ Difficulty Varies

What Does Error HJ Mean?

The Daikin air conditioner HJ error code indicates a communication failure between the indoor and outdoor units, often accompanied by beeping sounds and a flashing display. This issue may arise from incorrect appliance identification or connection problems. Ensure that your appliance is a Daikin air conditioner, as this error may be confused with the HJ code found in Daikin ˆ systems. If issues persist, further assistance may be required.

Possible Causes

  • Faulty communication cable
  • Defective PCB (Printed Circuit Board)
  • Improper installation

How to Fix Error HJ

DIY Fix Verify appliance type

  1. Confirm that the appliance is indeed a Daikin air conditioner by checking the model number/label
  2. If HJ appears on an AC remote or unit display, note the exact display context (remote display, blinking lights, calendar display)

Technician Only Check with official Daikin error lookup

  1. Use Daikin’s official error code search tool for the specific model to enter HJ and confirm whether it is valid for that unit
  2. If no result appears, consult Daikin technical support or service manual for that exact model
🛑 When to Call a Pro:
  • If the air conditioner is not operating normally and an unknown error code persists after power‑cycling, contact Daikin support or a qualified HVAC technician

Technical Specifications

wattage N/A
component Communication Cable
resistance N/A
part_number DAIKIN 4A200036
voltage_rating 230V AC

Common Questions

What does HJ error mean on daikin air conditioner?

HJ error signifies a communication failure between indoor and outdoor units.

Can I fix daikin air conditioner HJ error myself?

Yes, confirm the appliance type and check the display context for clues.

How much does it cost to fix HJ error?

Repair costs vary by model and region; consult a technician for a quote.

When should I call a technician for HJ?

Contact a technician if the error persists after power-cycling the unit.

Sources & References

Data last verified: 2026-07-01

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