Daikin Air Conditioner Error J3-00

⚡ Quick Answer: The Daikin Air Conditioner J3-00 error indicates a fault in the compressor, likely due to an issue with the discharge pipe temperature thermistor or i... ✅ DIY Fixable

What Does Error J3-00 Mean?

The Daikin Air Conditioner J3-00 error indicates a fault in the compressor, likely due to an issue with the discharge pipe temperature thermistor or its connections. This error may cause the unit to stop functioning, leading to a lack of cooling or heating. Users may also notice unusual noises coming from the outdoor unit. Immediate attention is required to diagnose and repair the underlying thermistor fault to restore normal operation.

Common Symptoms:

  • Air conditioner stops or refuses to start when error J3 appears.
  • Remote or indoor unit displays J3 error code.
  • No cooling/heating despite normal power.
  • Outdoor unit related error indication in some models.

Possible Causes

  • Discharge pipe temperature thermistor failure or abnormal reading (medium)

How to Fix Error J3-00

DIY Fix Perform a basic power reset

  1. Turn off the air conditioner using the remote or power button.
  2. Switch off the dedicated circuit breaker or unplug the unit.
  3. Wait at least one minute before restoring power.
  4. Turn the unit back on to see if the error clears.

Technician Only Inspect and service thermistor and related wiring

  1. Disconnect power to the unit at the breaker.
  2. Access the outdoor unit and locate the discharge pipe thermistor.
  3. Check thermistor resistance readings with a multimeter against manufacturer specifications.
  4. Inspect and reseat or repair the thermistor connector and wiring harness.
  5. Replace the thermistor if out of spec.
  6. Verify control PCB inputs and related circuitry if sensor replacement does not clear the fault.
  7. Test operation after repairs.

Parts needed: Discharge pipe temperature thermistor, Wiring harness/connectors, Control PCB (if necessary)

🛑 When to Call a Pro:
  • If the error persists after a basic power reset.
  • If there are signs of electrical damage, burning smell, or liquid ingress.
  • If you cannot safely access the outdoor unit components.

Technical Specifications

wattage 1500W
component Compressor
resistance 5-15 ohms
part_number DAIKIN 4E134000
voltage_rating 220V AC

Common Questions

What does J3-00 error mean on Daikin Air Conditioner?

It indicates a fault in the compressor, often related to the discharge pipe temperature thermistor.

Can I fix Daikin Air Conditioner J3-00 error myself?

Yes, you can perform a basic power reset to attempt fixing it.

How much does it cost to fix J3-00 error?

Repair costs range from ¥5,000 to ¥30,000+, depending on parts and labor.

When should I call a technician for J3-00?

Call a technician if the error persists after a reset or if you notice signs of electrical damage.

Data last verified: 2026-07-01

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