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Room temperature thermistor error

Room temperature thermistor error — Room sensor fault

Daikin · room air conditioner

What does Room temperature thermistor error mean?

This error indicates a problem with the sensor that measures the room's temperature. Accurate temperature readings are crucial for the air conditioner's performance.

Common Causes

  • Faulty room temperature sensor
  • Wiring issue connected to the sensor
  • Sensor is blocked or dirty

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Make sure the indoor unit's location is not affected by direct sunlight, drafts, or heat sources that could skew temperature readings.

  2. 2

    Power cycle the air conditioner by turning it off at the breaker for 30 seconds, then back on.

  3. 3

    Ensure nothing is blocking the sensor on the indoor unit.

  4. 4

    If the error continues, contact your installer or dealer for service.

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

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Source: Daikin room air conditioner
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