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Gree Mini Split H1 Error Code

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

Quick answer

H1 means the heat pump is in defrost or oil-return operation during heating. The outdoor unit may steam, the indoor fan may pause, and heating should resume after the cycle finishes. Not an error.

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What H1 means

H1 means the heat pump is in defrost or oil-return operation during heating. The outdoor unit may steam, the indoor fan may pause, and heating should resume after the cycle finishes. Not an error.

Causes, ranked

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

Commonly searched as: "gree h1" · "gree error code h1" · "gree air conditioner h1"

Sources

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