Where is the Wuling Hongguang air conditioning pressure switch located?
2 Answers
It is generally installed on the high-pressure pipeline of the refrigeration system or the liquid storage dryer. Below is the relevant introduction of the air conditioning pressure sensor: 1. Function of the pressure sensor: The air conditioning pressure sensor is a sensor component of the automatic air conditioning control system. Its function is to prevent the refrigeration system from operating under extreme refrigerant pipeline pressure and to assist in controlling the speed of the cooling fan. The pressure sensor is installed on the high-pressure pipeline of the air conditioning system. This sensor outputs pressure signals to the air conditioning control unit. When the air conditioning refrigerant pipeline pressure is detected to be too low or too high, the control system stops supplying power to the air conditioning compressor clutch, and the compressor stops running to avoid damage to the air conditioning system. When the refrigerant pressure reaches a medium pressure value, the radiator fan operates at high speed to reduce the air conditioning refrigerant pressure. 2. Working principle of the air conditioning pressure sensor: The pressure sensor is a device that can convert the detected pressure signal into an electronic signal, which is then processed by the computer board chip to finely control the components of the air conditioning unit based on the pressure detection results. There are two types of pressure sensors in appearance. Nowadays, most pressure sensors are capacitive pressure sensors, which consist of two closely spaced parallel diaphragms and a sturdy, compact housing.
I usually pay attention to the positions of car components when driving. For the Wuling Hongguang's air conditioning pressure switch, it is typically installed in the engine compartment, right next to the compressor, especially on the high-pressure refrigerant line. The purpose of this switch is to monitor the refrigerant pressure, preventing system overpressure or underpressure from damaging the compressor. If the air conditioning suddenly stops cooling or makes unusual noises, it might be a sign of switch failure. I recommend first checking the schematic in the user manual or searching online for diagrams specific to your car model. However, avoid disassembling it yourself, as refrigerant is toxic and prone to leakage, and improper handling can pollute the environment or cause harm. It’s safer to leave it to professional mechanics, who can accurately test it with a pressure gauge. During regular air conditioning maintenance, periodically cleaning the condenser and checking refrigerant levels can reduce the likelihood of switch malfunctions and extend the air conditioning system's lifespan.
