Samsung Mini Split C484 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 C484 maps to PFC over load error in official Samsung service documentation; SplitAtlas reads it as over-voltage protection error. Generation-dependent - verify against your model's manual. PFC and bus circuitry are lethal - 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 C484 means

C484 is generation-dependent on Samsung RAC mini splits. Official Samsung service documentation maps C484 to PFC (power factor correction) over load error - the PFC stage exceeded its current limit; SplitAtlas, presenting the current R-32 residential mapping, reads C484 as an Over-voltage protection error. Both are outdoor-drive electrical protection faults on lethal-voltage circuitry.

Code meaning varies by series

  • SplitAtlas (current R-32 residential mapping per SplitAtlas): Over-voltage protection error (SplitAtlas)
  • CONFLICT NOTE: SplitAtlas presents C484 as Over-voltage protection error; official Samsung documents (Avant RAC service manual and WindFree 3.0 installer quick guide LED table) map C484 to PFC over load error and map over-voltage protection to C483. 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 C483 · Samsung C466 · Samsung C488

Commonly searched as: "samsung c484" · "samsung error code c484" · "samsung air conditioner c484"

Sources

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