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Restriction in liquid tube.

Head Pressure Too Low - Blocked liquid line.

Bryant · Comfort Alert Diagnostic Module

What does Restriction in liquid tube. mean?

There is a blockage in the liquid refrigerant line, preventing proper flow. This can cause pressure drops and affect overall system performance.

Common Causes

  • Debris in the line.
  • Kinked tubing.
  • Clogged filter drier.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the indoor air filter is clean.

  2. 2

    Check that the outdoor unit has adequate airflow.

  3. 3

    Contact a qualified technician to diagnose and remove the restriction in the liquid line.

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