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Defective compressor.

Compressor Cycles (Other Than Normally Satisfying Thermostat) - Faulty compressor.

Bryant · Comfort Alert Diagnostic Module

What does Defective compressor. mean?

The compressor itself is failing or has internal issues, causing it to cycle improperly instead of running normally to meet the thermostat's demand.

Common Causes

  • Wear and tear over time.
  • Previous operational stresses.
  • Electrical faults within the compressor.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the unit is receiving adequate and stable voltage.

  2. 2

    Check that airflow to the outdoor coil is not restricted.

  3. 3

    Contact a qualified technician to diagnose the compressor and determine if replacement is needed.

Browse all codes in this manual (55)
Verified technical data. Last updated: April 2026

Related Faults

ALERT LED * flashes Yellow (misreported)Yellow ALERT LED * flashes (misreported) — Welded Contactor checkALERT LED 2 flashes YellowYellow ALERT LED 2 flashes — System pressure trip or compressor overloadALERT LED 3 flashes YellowYellow ALERT LED 3 flashes — Compressor short cycling
Source: Bryant Comfort Alert Diagnostic Module
Open Manual (Page 33)Search more codes in this manual