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How to Troubleshoot Error Codes CH05, 53, E0, CH32, 33, 36, 38, F4

If the error code appears shortly after installation, contact your installer directly. This often indicates a loose connection or a refrigerant leak that occurred during the installation process.

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TroubleshootingAir Conditioners

What to Check First

  1. Do not disassemble the air conditioner or replace internal parts yourself. Doing so may cause fire, electric shock, serious injury, or death.
  2. If the error code persists, stop using the air conditioner and contact LG Support.
  3. If the error code appears shortly after installation, contact your installer directly. This often indicates a loose connection or a refrigerant leak that occurred during the installation process.
  4. Unplug your air conditioner from the power outlet. Turn off the power at the circuit breaker if you cannot access the power plug. Wait for about five minutes to allow the system to fully reset. Plug the unit back in or restore power at the circuit breaker. Check if the error code has cleared.
  5. Move left or right to check the contents.
  6. This guide was created for all models, so the images or content may be different from your product.

Why This Can Happen

Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.

Safety and Model-Specific Guidance

Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.

Frequently Asked Questions

What should I check first for How to Troubleshoot Error Codes CH05, 53, E0, CH32, 33, 36, 38, F4, CH66, 90, 91, 92, and 93 on Your LG Air Conditioner?

Do not disassemble the air conditioner or replace internal parts yourself. Doing so may cause fire, electric shock, serious injury, or death.

When should I stop troubleshooting and contact LG?

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Does this guidance apply to every LG model?

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

Buying Guides for This Product Type

Fit & installationAir Conditioner Fit, Installation & Delivery PlanningEfficiency & running costAir Conditioner Efficiency, Energy & Running-Cost GuideHousehold use caseAir Conditioner Family & High-Use Household GuideFeatures & valueAir Conditioner Features Worth Paying For — Value Guide

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Read the Official LG Guide