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J6-07

J6-07 — OU: Malfunction of heat exchanger thermistor

Daikin · ASHP Error Codes

What does J6-07 mean?

This code indicates a malfunction of the heat exchanger thermistor within the outdoor unit (OU).

Common Causes

  • Faulty thermistor
  • Loose connections
  • Temperature sensor failure

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the thermistor's wiring in the outdoor unit.

  2. 2

    Ensure the thermistor is clean and undamaged.

  3. 3

    Reset the unit by turning off the power.

  4. 4

    Contact a service professional for diagnosis.

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 3)Search more codes in this manual