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12003

12003 — Discharge transducer fault, circuit C

Carrier · 30XA/XAS/XB/XBP/XW Chillers

What does 12003 mean?

The pressure transducer measuring discharge gas pressure on circuit C has a fault. Circuit C will shut down.

Common Causes

  • Defective discharge transducer
  • Installation fault
  • Wiring problems

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the wiring for the discharge transducer on circuit C.

  2. 2

    Inspect the transducer for any visible damage.

  3. 3

    Contact Carrier Service if circuit C does not restart.

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

Related Faults

1007810078 — High discharge gas temperature, circuit A1007910079 — High discharge gas temperature, circuit B1008010080 — High discharge gas temperature, circuit C
Source: Carrier 30XA/XAS/XB/XBP/XW Chillers
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