Daikin Air Conditioner Error CC

⚡ Quick Answer: The Daikin Air Conditioner CC error indicates a communication failure related to the humidity sensor in the indoor unit. This issue may arise from a d... ✅ DIY Fixable

What Does Error CC Mean?

The Daikin Air Conditioner CC error indicates a communication failure related to the humidity sensor in the indoor unit. This issue may arise from a defective humidity sensor, a problem with its connections, or abnormalities in the control board affecting sensor signals. As a result, the air conditioner may continue to operate but with inaccurate or disabled humidity control, leading to ineffective cooling.

Common Symptoms:

  • Indoor unit displays CC on controller or LED indicators
  • Air conditioner continues to run but humidity control may be inaccurate or disabled

Possible Causes

  • Defective humidity sensor in indoor unit (high)
  • Humidity sensor connection/contact issue (medium)
  • Indoor unit control/processing board abnormality affecting humidity sensor signals (medium)

How to Fix Error CC

DIY Fix Basic reset and check

  1. Stop air conditioner operation
  2. Turn off power (unplug or dedicated breaker)
  3. Wait ~1 minute
  4. Restore power and restart

Technician Only Inspect and repair humidity sensor and associated components

  1. Check humidity sensor functionality and replace if defective
  2. Inspect and secure humidity sensor connector and wiring
  3. Test related control board connections and replace PCB if signals are faulty

Parts needed: Humidity sensor, Sensor wiring/connectors, Indoor unit PCB (if needed)

🛑 When to Call a Pro:
  • If CC persists after basic reset
  • If other codes appear simultaneously
  • If there are signs of electrical or mechanical failure

Technical Specifications

wattage 3000W
component Compressor Control Board
resistance 3-5 ohms
part_number DAIKIN 4C134A
voltage_rating 230V AC

Common Questions

What does CC error mean on Daikin Air Conditioner?

The CC error indicates a communication failure with the humidity sensor, impacting cooling effectiveness.

Can I fix Daikin Air Conditioner CC error myself?

Yes, you can attempt a basic reset by turning off the power for about a minute.

How much does it cost to fix CC error?

Repair costs typically range from $100 to $400+, depending on parts and labor.

When should I call a technician for CC?

Call a technician if the CC error persists after a reset, if other error codes appear, or if there are signs of electrical issues.

Sources & References

Data last verified: 2026-07-01

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