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T144

T144 — Circuit B Failure To Pressurize

Carrier · Energy Recovery Ventilators

What does T144 mean?

Circuit B is experiencing a failure to pressurize, often due to wiring issues affecting compressor rotation or a faulty compressor.

Common Causes

  • Wiring causing reverse rotation
  • Faulty compressor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that the wiring is correct and ensures proper rotation.

  2. 2

    Inspect the compressor for any defects.

  3. 3

    Seek assistance from a qualified service technician.

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

Related Faults

1 Fault CodeFault Code 1 — OVERCURRENT10 Fault CodeFault Code 10 — PANEL LOSS11 Fault Code11 Fault Code — ID RUN FAIL
Source: Carrier Energy Recovery Ventilators
Open Manual (Page 47)Search more codes in this manual