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Outdoor heat exchanger thermistor abnormality

Outdoor heat exchanger thermistor abnormality

Daikin · FTXF-D

What does Outdoor heat exchanger thermistor abnormality mean?

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

Common Causes

  • Faulty thermistor
  • Wiring issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the outdoor unit's heat exchanger is clean and not obstructed.

  2. 2

    Turn off the power supply to the unit at the circuit breaker, wait 30 seconds, and turn it back on.

  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

4-way valve abnormality4-way valve abnormalityBeepSingle beep - Setting changesBeep-beepTwo beeps - Operation starts
Source: Daikin FTXF-D
Open Manual (Page 13)Search more codes in this manual