Failure to cool in summer is one of the most common AC issues. Before requesting service, try these self-checks: \n\n1. Check remote settings: Ensure mode is set to "Cool" and temperature is below room temperature. \n\n2. Clean filters: Remove indoor unit filters, rinse with water, let dry, then reinstall. Clogged filters severely reduce cooling performance. \n\n3. Inspect outdoor unit: Verify it's running normally and that no obstructions are blocking airflow. \n\n4. Assess cooling performance: If everything above is normal but cooling remains poor, low refrigerant or compressor failure may be the cause. Contact a professional for inspection.\n\nXiao Yi Jiang reminder: We recommend a professional cleaning and maintenance before each annual use to extend lifespan and ensure optimal cooling.
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