Samsung Mini Split C468 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 C468 maps to Current sensor error in official Samsung service documentation; SplitAtlas reads it as heatsink sensor error. Generation-dependent - verify against your model's manual. Sensor and inverter-board work is technician-only.

Severity: medium · 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 C468 means

C468 is generation-dependent on Samsung RAC mini splits. Official Samsung service documentation maps C468 to Current sensor error - the outdoor current-sense input is out of range or open/short; SplitAtlas, presenting the current R-32 residential mapping, reads C468 as a Heatsink sensor error (open/short on the inverter-heatsink NTC). Both are outdoor-board sensor faults confirmed by technician testing.

Code meaning varies by series

  • SplitAtlas (current R-32 residential mapping per SplitAtlas): Heatsink sensor error (SplitAtlas)
  • CONFLICT NOTE: SplitAtlas presents C468 as Heatsink sensor error; official Samsung documents (Avant RAC service manual and WindFree 3.0 installer quick guide) map C468 to Current sensor error and map heatsink sensor error to C474. 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 C467 · Samsung C474 · Samsung C469

Commonly searched as: "samsung c468" · "samsung error code c468" · "samsung air conditioner c468"

Sources

Related Mini Split guides

Mini-Split Communication Error: DIY Checks · Mini-Split Flashing Light Decoder: Blink Patterns · Mini-Split Maintenance Checklist: Seasonal DIY Tasks · Mini-Split Not Cooling: Ranked Causes and DIY Checks