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CJ-02

CJ-02 — Room temperature sensor problem

Daikin · ASHP Error Codes

What does CJ-02 mean?

This error code indicates a problem with the sensor measuring the room temperature.

Common Causes

  • Faulty room temperature sensor
  • Sensor disconnected
  • Obstruction blocking sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if the room temperature sensor is clean and unobstructed.

  2. 2

    Ensure the sensor's wiring is securely connected.

  3. 3

    Restart the unit by cycling the power.

  4. 4

    If the issue persists, the sensor may need replacement by a technician.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

7H-017H-01 — Water flow problem7H-047H-04 — Water flow problem during domestic hot water production7H-057H-05 — Water flow problem during heating/sampling
Source: Daikin ASHP Error Codes
Open Manual (Page 2)Search more codes in this manual