Appliance Code Check

LG · Ductless air conditioner

CH38

Safe checks availableService if the code returns

alert

LG CH38 warns that a covered air conditioner may be low on refrigerant.

Display form
CH38
Lookup normalization
CH38
Alternate forms
None retained in the official record

Check the display exactly as shown. The decoder ignores case and spaces, but it never substitutes O/0, I/1, or S/5.

Official meaning, scoped to this source

LG CH38 warns that a covered air conditioner may be low on refrigerant.

Manufacturer
LG
Document
[LG Air Conditioner] Guide to Error Codes · Official error-code index
Product family
split-system air conditioners
Market and locale
US · en-US

This is an official-source interpretation for the stated scope, not a confirmed diagnosis. Meaning can change across brands, models, product families, and markets.

Market, product family, and model applicability

US · en-US · LG split-system air conditioners covered by the cited US guide

Exact model applicability has not been verified.

This release retains family or source-index scope only. Do not infer that an arbitrary model uses this code; confirm it in the exact manufacturer manual.

Open the official model/manual lookup (opens in a new tab)

Safe external checks

Contact the installer after installation or relocation; during normal use, use the documented reset and contact LG if CH38 returns.

  1. For a display during normal use, disconnect power for five minutes and restore it.

Safe checks and when to request service

Use the installer for installation-related CH38 and LG service for a returning normal-use display.

  • Contact the installation technician when CH38 follows installation or relocation.
  • Contact LG support if CH38 returns after the reset.

Separate hazard signs such as smoke, flooding, sparks, or a burning smell require the manufacturer's safety instructions.

Do not do

Do not handle refrigerant, inspect sealed-system components, or alter piping.

Refrigerant and piping inspection are professional-only.

Check warranty before authorizing service

Warranty coverage depends on the country, model, purchase date, and manufacturer terms. Have the model and serial number available, open the manufacturer's official support or warranty page, and ask whether the service route is authorized before paying for work.

This public record does not make a coverage determination. Use the official model lookup and warranty information linked below.

Open official model lookup (opens in a new tab)↗View source and warranty links

If the message returns

Contact the installer or LG service according to when CH38 appeared.

Source and scope

Official source verified at release
Market and locale
US · en-US
Product family
split-system air conditioners
Content and safety verified on
July 26, 2026
Source updated by manufacturer
Not supplied in the official record

LG

[LG Air Conditioner] Guide to Error Codes · Official error-code index

Open official source (opens in a new tab)

Verification and review status

  • Content meaning and safety verifiedJuly 26, 2026
  • Source reachability statusOfficial source verified at release
  • Automated evidence review completedPassed · July 26, 2026
  • Automated safety rules checkPassed for this published safety boundary
  • Human technical reviewPending — no human completion is claimed
  • Publication gateAutomated publication checks passed · July 26, 2026
  • Official-source conflictNo unresolved conflict admitted to this public release

Automated checks and release approval are not a substitute for a qualified service professional or the exact manufacturer manual.

Evidence used for this guidance

  • CH38 / F4 section

    Source-backed summary

    CH38 indicates low refrigerant; after installation contact the installer, otherwise power cycle and contact LG if it returns.

Does the model or source look wrong?

Send a privacy-minimal correction signal. It cannot change public content automatically.

Report a model or source mismatch

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