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Indoor/outdoor unit combination fault

Indoor and outdoor unit combination fault

Daikin · FTXF-D

What does Indoor/outdoor unit combination fault mean?

The indoor and outdoor units are not compatible or have a configuration error.

Common Causes

  • Incorrect unit pairing
  • System configuration error

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that the indoor and outdoor units are a compatible combination for this model.

  2. 2

    Contact your installer to confirm the system configuration.

  3. 3

    Refer to the installer for reprogramming if necessary.

Browse all codes in this manual (32)
Verified technical data. Last updated: April 2026

Related Faults

4-way valve abnormality4-way valve abnormalityBeepSingle beep - Setting changesBeep-beepTwo beeps - Operation starts
Source: Daikin FTXF-D
Open Manual (Page 12)Search more codes in this manual