Is it useful to install a temperature control for car air conditioning icing?

[DeKaylee]

Yes, it is useful. The temperature control is installed in the car's evaporator box, with the temperature probe inserted into the aluminum strip. The control lines of the air conditioning compressor and the electric fan are then connected in series to the temperature control switch. Related introduction: 1. Function: The temperature control switch can transmit the temperature to the temperature controller through the temperature protector. The temperature controller then issues switch commands to control the operation of the equipment, achieving the desired temperature and energy-saving effect. 2. Role: The temperature control switch operates based on temperature changes in the working environment. Physical deformation occurs inside the switch, producing specific effects that result in a series of automatic control actions, such as turning on or off.

[DeRhett]

I've been driving for almost twenty years and have encountered the issue of air conditioning freezing several times. Adding a temperature controller really helps. Last time, the evaporator in my old car froze solid, and no air came out of the vents. If the original car's temperature control is slow or broken, the compressor keeps running non-stop, and the evaporator temperature can drop below freezing. Adding an external temperature controller allows you to set a shutdown temperature. I installed mine near the evaporator and set it to cut off power at 3 degrees. However, I must remind you that if the refrigerant is overcharged or the expansion valve is stuck, adding a temperature controller alone won't help. It's best to have a mechanic check the system pressure with a gauge first, so you don't waste time and money on unnecessary fixes.

[EvelynLee]

Last time my car's air conditioning suddenly stopped cooling, and upon inspection, the evaporator was found to be completely covered in thick ice. The mechanic said the AC temperature control probe might have failed, causing the compressor to run continuously. He suggested installing a mechanical temperature control switch, which only costs around a hundred yuan. After installation, a temperature probe is clamped onto the pipeline, and with the shutdown value set, the compressor won't run endlessly. But remember to check if the air filter is clogged—if the airflow is too low, the cold air can't be expelled, leading to icing. This modification is especially practical for older cars, but during installation, make sure the wiring isn't messed up—it's best to have a professional handle it.

[CatherineLynn]

Air conditioner icing is mostly caused by the loss of control over the evaporator temperature. When the factory thermostat fails, installing an independent temperature control module can effectively solve the problem. The principle is simple: an additional temperature sensor monitors the surface temperature of the evaporator, and when it reaches the set value (e.g., 4°C), it cuts off the compressor power. I have seen many successful cases of car owners modifying their systems, especially in older cars over ten years. However, it's important to distinguish the root cause. If the refrigerant is excessive or the expansion valve is faulty, adding a temperature control can only alleviate but not cure the issue. It's best to conduct a comprehensive inspection of the air conditioning system before modification to avoid unnecessary expenses.