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[LG Air Conditioner] How to Resolve Error Code CH 61: Causes, Checks

Error code CH61 may be displayed to protect your air conditioner when the outdoor unit’s heat exchanger overheats.

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TroubleshootingAir Conditioners

What to Check First

  1. The outdoor unit is installed on an enclosed balcony and the windows are closed.
  2. Objects surrounding the outdoor unit is blocking proper ventilation.
  3. CH61 error keeps appearing on the display.
  4. It is hot around the outdoor unit.
  5. The indoor unit filter is clogged with dust.
  6. Error code CH61 may be displayed to protect your air conditioner when the outdoor unit’s heat exchanger overheats.
  7. The CH 61 error may occur if the outdoor unit becomes very hot during air conditioning operation. Poor ventilation and high surrounding temperatures can cause the outdoor unit’s temperature to rise. The purpose of the CH61 error is to prevent fire hazards and product malfunction.
  8. On heating and air conditioning units, the CH61 error is displayed when the internal temperature of the indoor unit becomes too high during heating operation. This occurs when the air intake of the unit becomes blocked – most often due to a clogged filter.
  9. ※ Depending on the product model, the error code may be shown as P4, P6 or P8.
  10. ➔ Open ventilation windows or screens.

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 [LG Air Conditioner] How to Resolve Error Code CH 61?

The outdoor unit is installed on an enclosed balcony and the windows are closed.

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

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

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Read the Official LG Guide