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Indoor heat exchanger thermistor abnormality

Indoor heat exchanger thermistor abnormality

Daikin · FTXF-D

What does Indoor heat exchanger thermistor abnormality mean?

The sensor measuring the temperature of the indoor heat exchanger has a fault.

Common Causes

  • Faulty thermistor
  • Wiring issue to the thermistor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the power supply to the unit at the circuit breaker.

  2. 2

    Wait 30 seconds and restore power.

  3. 3

    If the error persists, contact your installer for sensor replacement.

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

Related Faults

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Source: Daikin FTXF-D
Open Manual (Page 12)Search more codes in this manual