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73

Code 73 — Contactor shorted

Bryant · Air Conditioning

What does 73 mean?

The contactor, an electrical switch, is shorted. This means it is stuck in a closed position when it should be open, potentially causing continuous operation or damage.

Common Causes

  • Faulty contactor
  • Wiring short to the contactor coil
  • Over-voltage condition

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Visually inspect the contactor for signs of burning or damage.

  2. 2

    Check wiring connected to the contactor for shorts.

  3. 3

    Test the contactor coil resistance.

  4. 4

    Contact an HVAC technician for contactor replacement.

Browse all codes in this manual (47)
Verified technical data. Last updated: April 2026

Related Faults

13Code 13 — Limit Circuit Lockout14Code 14 — Ignition Lockout15Code 15 — Blower Motor Lockout
Source: Bryant Air Conditioning
Open Manual (Page 17)Search more codes in this manual