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F1

F1 - Malfunction of discharge pipe temperature (Outdoor Unit)

Daikin · Simple Self Diagnosis by Malfunction Code | Daikin

What does F1 mean?

There is an issue detected with the temperature sensor measuring the discharge pipe in the outdoor unit.

Common Causes

  • Faulty discharge pipe thermistor
  • Loose or damaged sensor wiring
  • Incorrect sensor placement

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the power to the outdoor unit.

  2. 2

    Inspect the wiring connected to the discharge pipe temperature sensor.

  3. 3

    Restore power and see if the error code is resolved.

  4. 4

    If the error persists, contact a qualified technician.

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

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Source: Simple Self Diagnosis by Malfunction Code | Daikin
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