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A061

A061 — Return Air Thermistor Failure Alarm

Carrier · 38AP Air Handler

What does A061 mean?

The return air thermistor has failed. The unit will shut down automatically. This alarm can be reset automatically when the thermistor is functioning correctly.

Common Causes

  • Return air thermistor failure
  • Wiring issues to the thermistor
  • Faulty control board

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    The unit should attempt automatic reset when the thermistor is functional.

  2. 2

    Inspect wiring and connections to the return air thermistor.

  3. 3

    If the failure persists, the thermistor or control board may need replacement.

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

Related Faults

A051A051 — Circuit A, Compressor 1 Stuck On Failure AlarmA052A052 — Circuit A, Compressor 2 Stuck On Failure AlarmA053A053 — Circuit A, Compressor 3 Stuck On Failure Alarm
Source: Carrier 38AP Air Handler
Open Manual (Page 163)Search more codes in this manual