Suggest to repair at workshop. The usual keypoints and procedure of repair are:
1. Check if the water hose from radiator is broken or leakage, replace if it is broken.
2. Use professional cleaning chemical to clean the interior and exterior of the radiator, replace if it is faulty.
3. Dismantle the condenser and clean with professional cleaning chemical.
4. Start the car to check if the problem is resolved after repairing done.