What to Check First
- When the indoor temperature is high, the inverter type air conditioner operates the compressor at higher speed, thus quickly cooling the indoor environment with strong coldness, but the high pitch noises will be louder. When the indoor temperature is adequate, the compressor runs slowly to maintain the temperature with low coldness and thus the noises will be less loud and power saving effects will be improved.
- ※ While cooling operation takes place, the noises from the outdoor unit become loud and quiet repeatedly, and this is normal, so rest assured when you use it.
- 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
Frequently Asked Questions
What should I check first for [LG Air Conditioner Sound] Outdoor unit generates louder noises?
When the indoor temperature is high, the inverter type air conditioner operates the compressor at higher speed, thus quickly cooling the indoor environment with strong coldness, but the high pitch noises will be louder. When the indoor temperature is adequate, the compressor runs slowly to maintain the temperature with low coldness and thus the noises will be less loud and power saving effects will be improved.
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.
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