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Lg Mini Split H237 Error Code

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

Quick answer

H 237 points to an indoor/outdoor connection problem and can also occur when the outdoor unit has no power. Advisory Technician.

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What H237 means

H 237 points to an indoor/outdoor connection problem and can also occur when the outdoor unit has no power. Advisory Technician.

Causes, ranked

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

Commonly searched as: "lg h237" · "lg error code h237" · "lg air conditioner h237"

Sources

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