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63

Code 63 (18VS,19VS/V-HP/AC) — Fan Inverter Over Current

Carrier · Residential HVAC Systems

What does 63 mean?

This fault for 18VS,19VS/V-HP/AC units indicates that the outdoor fan inverter has detected an excessive current draw by the fan motor. This is a safety shutdown.

Common Causes

  • Obstruction of the outdoor fan blade
  • Faulty outdoor fan motor or bearings
  • Short circuit in the fan motor wiring
  • Inverter malfunction

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the power to the outdoor unit at the circuit breaker for at least 30 seconds.

  2. 2

    Visually inspect the outdoor fan for any debris or obstructions preventing its free movement.

  3. 3

    Restore power and observe if the fan attempts to start.

  4. 4

    If the over current fault recurs, contact a qualified HVAC technician to inspect the fan motor and inverter.

Browse all codes in this manual (51)
Verified technical data. Last updated: April 2026

Related Faults

109Code 109 — Low Indoor Temperature Alert: Zone 7 Allowing Aux Heat110Code 110 — Low Indoor Temperature Alert: Zone 8 Allowing Aux Heat12Code 12 — Furnace Blower on after Power-up
Source: Carrier Residential HVAC Systems
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