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Pr-04

Pr-04 — Suction pressure transducer fault, circuit A

Carrier · Pro-Dialog Control

What does Pr-04 mean?

The suction pressure transducer for circuit A is faulty or has an installation issue. The circuit will be shut down.

Common Causes

  • Transducer is defective.
  • Installation fault (e.g., incorrect connection).
  • Wiring issue.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the transducer's installation and connections.

  2. 2

    Inspect the wiring to the transducer for damage.

  3. 3

    Verify the pressure reading is plausible or test the transducer.

  4. 4

    If the fault persists, the transducer may need replacement.

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

Related Faults

A1-01A1-01 — Maintenance alert: service number nnCT-01CT-01 — Contactor stuck, circuit ACT-02CT-02 — Contactor stuck, circuit B
Source: Carrier Pro-Dialog Control
Open Manual (Page 34)Search more codes in this manual