What Causes High Temperature in Car Air Conditioning Radiator?
2 Answers
Car air conditioning radiator temperature is high due to malfunctioning electric fans or blockage by foreign objects causing poor heat dissipation. Below are the causes and solutions for this issue: Malfunctioning electric fan: The car's electric fan is controlled by a thermostat. When the water temperature rises to the upper limit, the thermostat activates the power supply, and the fan starts working. If the electric fan is not functioning properly, the radiator will not cool down in time. It is necessary to check the performance of the electric fan and its control system. Radiator surface covered by foreign objects: If the radiator surface is covered by foreign objects or clogged with dirt, heat cannot dissipate into the air. Cleaning the surface coverings promptly will solve the issue.
Last time I went on a long-distance trip, I encountered a situation where the air conditioner radiator was scalding hot. The mechanic later explained that it was caused by poor heat dissipation. The most common issue is the condenser being completely blocked by willow catkins or insect remains, which especially happens in summer. Another possibility is the cooling fan getting stuck and not spinning, which can be checked by manually shaking the fan blades. Additionally, too much or too little refrigerant, leading to abnormal pressure, can also cause overheating. I recommend first checking if the radiator fins are blocked by dirt and gently rinsing them with a water gun. If that doesn’t work, then it’s necessary to check the fan circuit and refrigerant pressure. During regular maintenance, pay special attention to cleaning the gap between the radiator and the condenser, as this area is particularly prone to accumulating dirt.
