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P055

P055 - Compressor 1 Failure (Circuit B)

Carrier · Air Conditioning

What does P055 mean?

This indicates a failure with Compressor 1 in Circuit B. The system will attempt to restart the compressor up to 3 times automatically.

Common Causes

  • High pressure in the system
  • Excessive current draw by the compressor
  • Wiring error

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the air filter is clean and not restricting airflow.

  2. 2

    Check for obstructions around the outdoor unit's condenser coils.

  3. 3

    Verify all wiring connections to the compressor are secure.

  4. 4

    If the problem continues, a technician should check system pressures and wiring.

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

Related Faults

A051A051 - Compressor 1 Stuck On FailureA052A052 - Compressor 2 Stuck On FailureA055A055 - Compressor 1 Stuck On Failure (Circuit B)
Source: Carrier Air Conditioning
Open Manual (Page 100)Search more codes in this manual