Samsung Mini Split C142 Error Code

Updated 2026-08-29 · review status: manual-verified · reviewed by MiniSplitDecoder Editorial Team Last verified: 2026-08-29

Check your model first

  • WindFree 3.0 / AR+C (official quick guide)
  • Other Samsung series (SplitAtlas manual-aligned)

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

Quick answer

On WindFree 3.0 / AR+C manuals, C142 is a humidity sensor error. Some Samsung series use the same display for a mixed-operation (heat + cool requested at once) error. Power cycle once; sensor and configuration work is technician-only.

Severity: medium · DIY difficulty: easy

Safety

Stop at the single power-cycle check. The humidity sensor sits inside the indoor chassis and mixed-operation resolution requires configuration - both are technician-only.

What C142 means

C142 means, per the Samsung WindFree 3.0 / AR+C Installer Quick Guide (DB68-12003A-01), a HUMIDITY SENSOR ERROR - the humidity sensor reading is invalid. Other Samsung series' diagnostics instead tie the C142 display to a mixed operation error (zones asking for heat + cool at once; those manuals list mixed operation at C161). Samsung C-code assignments are generation-dependent; verify against your model's manual.

Code meaning varies by series

  • WindFree 3.0 / AR+C (official quick guide): Humidity sensor error
  • Other Samsung series (SplitAtlas manual-aligned): Mixed operation error (heat + cool requested simultaneously)

Causes, ranked

  1. 1. Humidity sensor reading out of range (official WindFree 3.0 meaning) common pro only

    Check: Requires resistance measurement against the Samsung sensor table.

    Fix: Technician: test and replace the humidity sensor.

  2. 2. Mixed heat/cool demand across zones (mixed-operation variant meaning) occasional DIY

    Check: Check whether the system's zones/controllers are set to opposing heat and cool modes and align them.

    Fix: Align all zones to one mode and power cycle once; if C142 returns, schedule service.

  3. 3. Transient control fault that clears after one reset common DIY

    Check: Power cycle once at the breaker and run a full cycle.

    Fix: If C142 returns, stop resetting and schedule service.

  4. 4. Indoor PCB fault after sensor and settings verify good rare pro only

    Check: Board-level diagnosis only.

    Fix: Technician: diagnose the indoor PCB.

Related codes

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

Samsung C140 · Samsung C143 · Samsung C161 · Samsung C108

Commonly searched as: "samsung c142" · "samsung error code c142" · "samsung air conditioner c142"

Sources

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