Samsung Mini Split C464 Error Code

Updated 2026-08-30 · review status: manual-verified · reviewed by MiniSplitDecoder Editorial Team Last verified: 2026-08-30

Check your model first

  • SplitAtlas (current R-32 residential mapping per SplitAtlas)
  • CONFLICT NOTE

Match the model on your equipment label to the linked manufacturer documentation. The same code can mean different things across model families.

Quick answer

Samsung C464 maps to IPM over-current error in official Samsung service documentation (Avant/WindFree 3.0 series); SplitAtlas reads it as a compressor starting error. Generation-dependent - verify against your model's manual. Inverter and compressor work is technician-only.

Severity: high · DIY difficulty: easy

Safety

Stop at the breaker power-cycle and any plug-accessible checks (filters, remote settings, visible wiring). The outdoor unit's capacitor holds a lethal charge and the refrigerant circuit is both pressurized and (on R-32 units) flammable — opening panels or servicing the sealed system is licensed-technician work (EPA 608).

What C464 means

C464 is generation-dependent on Samsung RAC mini splits. Official Samsung service documentation maps C464 to IPM over current (O.C) error with the IPM shunt resistance as the manual's first checklist item; SplitAtlas, presenting the current R-32 residential mapping, reads C464 as a Compressor starting error (compressor fails to start/rotate). Both readings point to the compressor drive path and are technician work.

Code meaning varies by series

  • SplitAtlas (current R-32 residential mapping per SplitAtlas): Compressor starting error (SplitAtlas)
  • CONFLICT NOTE: SplitAtlas presents C464 as a Compressor starting error; official Samsung documents (Avant RAC service manual and WindFree 3.0 installer quick guide) map C464 to IPM over current (O.C) error and map compressor starting error to C461. Samsung code assignments differ between product generations.

First checks before service

This page currently documents the safe reset triage. If the code returns, use the linked source manual or a qualified technician for code-specific diagnosis.

  1. 1. One-time fault event (power disturbance or transient sensor reading) common DIY

    Check: Power-cycle at the breaker/disconnect (or unplug for CPAP), restore, and run the system while watching for the code.

    Fix: If the code does not return after a full run cycle, the fault was transient — monitor, no repair needed.

  2. 2. Fault persists after a clean reset occasional pro only

    Check: If the code returns immediately or every session, note the conditions (startup, heating, after rain).

    Fix: A persisting code points at the component the manual assigns to this code — that repair is technician territory.

Related codes

Cross-references for the same fault family, by brand:

Samsung C461 · Samsung C463 · Samsung C465

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

Sources

Related Mini Split guides

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