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th-10

th-10 — Outside temperature sensor fault

Carrier · Pro-Dialog Control

What does th-10 mean?

The sensor measuring the outside temperature is faulty. The unit will shut down until the sensor is repaired or replaced.

Common Causes

  • Thermistor sensor is defective.
  • Wiring to the sensor is damaged.
  • Sensor connection is loose.
  • Sensor is blocked or covered.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the outside temperature sensor is clean and unobstructed.

  2. 2

    Check the sensor's wiring and connection.

  3. 3

    Verify the sensor's readings or resistance.

  4. 4

    Replace the sensor if it is defective.

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

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A1-01A1-01 — Maintenance alert: service number nnCT-01CT-01 — Contactor stuck, circuit ACT-02CT-02 — Contactor stuck, circuit B
Source: Carrier Pro-Dialog Control
Open Manual (Page 34)Search more codes in this manual