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Samsung Mini Split C464 Error Code

Updated 2026-08-29 · review status: draft Draft - unverified

Quick answer

C464 returns or the outdoor unit will not start. Tell them the Samsung meaning is: Compressor starting error. Technician boundary Stop here: compressor and electrical or inverter work is technician-only. Do not open panels, test capacitors, touch wiring, connect gauges, add refrigerant, or keep resetting the system.

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What C464 means

C464 returns or the outdoor unit will not start. Tell them the Samsung meaning is: Compressor starting error. Technician boundary Stop here: compressor and electrical or inverter work is technician-only. Do not open panels, test capacitors, touch wiring, connect gauges, add refrigerant, or keep resetting the system.

Causes, ranked

  1. Causes not yet documented — verify against the service manual.

Commonly searched as: "samsung c464" · "samsung error code c464" · "samsung air conditioner c464"

Sources

  • SplitAtlas manual-sourced reference — verified 2026-08-29