Why is my Heinner CORONA ECO HAC-12CWF-WH Air Conditioner not cooling properly?
- CChristine MorseAug 2, 2025
If your Heinner Air Conditioner isn't cooling or heating well, check the following: * Ensure the air filters are clean. * Make sure there's nothing blocking airflow to the indoor and outdoor units. * Verify that the temperature and mode are correctly set. * Close any open windows or doors. * Set the fan speed to high and adjust the louvers for maximum airflow. * Reduce direct sunlight in the room during cooling. * Minimize heat-generating appliances or computers, and reduce the number of people in the room when cooling. * Deactivate the SILENCE function, as it prioritizes noise reduction over performance.