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What does the AC button in a car air conditioner mean?

2 Answers
Espírito Santo
09/07/25 4:26am
The AC button in a car air conditioner is the switch for the cooling function. When this button is pressed, the compressor of the air conditioner starts working, and the air blown out by the blower becomes cold. The following are the functions of the air conditioning system: Temperature regulation: The air conditioner can control the temperature inside the car cabin, heating or cooling the air to maintain a comfortable level; Dehumidification function: The air conditioner can remove moisture from the air. Dry air absorbs human sweat, creating a more comfortable environment; Ventilation function: The air conditioner can intake fresh air, providing ventilation; Air purification function: The air conditioner can filter the air, removing dust and pollen.
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Lucille
09/19/25 3:48am
Last time I drove a friend's car, I realized many people don't know what the AC button means. It actually controls the refrigeration compressor. Pressing this button activates the compressor to circulate refrigerant in the AC system - you can't drive comfortably in summer without it. My usual habit is to start with external air circulation for ventilation when getting in the car, then switch to internal circulation after the temperature drops. If you encounter foggy windows on rainy days, turning on AC can quickly dehumidify, working much better than just using the heater. Also, I recommend not keeping AC on continuously during highway driving - turn it off for a few minutes every hour or two to let the compressor rest, which saves fuel and prevents evaporator mold. Remember to regularly check the cabin air filter - when clogged, the cooling efficiency drops significantly.
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What are the reasons for the small air volume of Wuling Hongguang's air conditioner?

Reasons for the small air volume of the Wuling Hongguang S heater: The air filter is too dirty, resulting in only partial air being delivered; the air blower is overloaded, which may burn out the air conditioner motor; the regulating electrical device of the air blower malfunctions, causing the air volume to decrease. If the air filter is too dirty, replace the air filter. When turning on the car air conditioner, first check if there is hot air, listen for any abnormal noise from the blower operation, and inspect whether the air ducts are clear. The functions of the car air conditioning system are as follows: 1. Provide comfort: Improve the comfort of the in-car environment, maintaining the air temperature, humidity, flow rate, cleanliness, noise, and residual pressure within comfortable standard ranges. 2. Purify air: Cool, heat, ventilate, and purify the air inside the compartment. 3. Remove moisture: Expel moisture from the air. Dry air absorbs human sweat, creating a more comfortable environment. 4. Ventilation: Inhale fresh air, providing ventilation. 5. Filter air: Filter the air to remove dust and pollen.
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What brands does GAC have?

GAC Group owns dozens of enterprises and R&D institutions including GAC Honda, GAC Toyota, GAC Motor, GAC New Energy, GAC Research Institute, GAC Fiat Chrysler, and GAC Mitsubishi. Its core vehicle business has formed a steady development pattern in three directions: independent brands, Japanese joint ventures, and European-American joint ventures. Guangzhou Automobile Group Co., Ltd. (referred to as GAC Group) was established on June 28, 2005, with its predecessor being Guangzhou Automobile Group Co., Ltd. established in June 1997. Its headquarters is located in Zhujiang New Town, Tianhe District, Guangzhou. Guangzhou Honda Automobile Co., Ltd. was established on July 1, 1998, as a joint venture invested and operated by Guangzhou Automobile Group Co., Honda Motor Co., Ltd., and Honda Motor (China) Investment Co., Ltd. with share ratios of 50:40:10, and a joint venture term of 30 years. In April 2009, Guangzhou Honda Automobile Co., Ltd. was renamed GAC Honda Automobile Co., Ltd. (referred to as "GAC Honda").
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Where is the Wuling Hongguang air conditioning pressure switch located?

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.
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What type of fuel should the Wuling Hongguang use, 92 or 95?

92 octane. The Wuling Hongguang can be fueled with 92-octane gasoline to meet its operational requirements. The minimum octane rating suitable for the vehicle is usually marked near the fuel tank. Simply follow the indicated rating or the specifications in the maintenance manual to add the corresponding fuel type. For vehicles that require 95-octane gasoline, such as those with turbocharged engines, using 92-octane fuel may cause knocking. Below is some relevant information about the Wuling Hongguang Mini: 1. Exterior: The Hongguang Mini is a micro, 3-door, 4-seat hatchback equipped with a single-speed transmission for electric vehicles. It measures 2920mm in length, 1493mm in width, and 1621mm in height, with a wheelbase of 1940mm and a top speed of 100 km/h. 2. Powertrain: The Hongguang Mini has a total motor power of 20 kW and a total motor torque of 85 Nm, featuring a rear-engine, rear-wheel-drive layout with tire specifications of 145/70R12.
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What are the new regulations for the annual inspection of the Wuling Hongguang 7-seater?

The new regulations for the annual inspection of the Wuling Hongguang 7-seater apply to non-operational small and micro passenger vehicles with 7-9 seats. Although the Wuling Hongguang has a more streamlined exterior and a more flexible and diverse interior space structure compared to other minivans, it ultimately cannot change its classification as a micro minivan. Therefore, the annual inspection of the Wuling Hongguang will still follow the original regulations. According to the "Implementation Regulations of the Road Traffic Safety Law," the specific details are as follows: 1. Operational vehicles: inspected once a year within the first 5 years, and once every 6 months after 5 years. 2. Non-operational vehicles: inspected once every two years for the first 6 years, once a year after 6 years, and once every 6 months after 15 years. The new regulations include 7-9 seat non-operational small and micro passenger vehicles in the exemption range. Additionally, the inspection cycle has been adjusted: for non-operational private vehicles aged 6-10 years, the inspection cycle has been changed from once a year to once every two years.
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Can China 5 vehicles be registered after the implementation of China 6 standards?

After the implementation of China 6, China 5 vehicles cannot be registered. The implementation of China 6 standards will prohibit the sale and registration of China 5 models. China 5 vehicles can only be registered in regions where China 6 has not yet been implemented. Compared to China 5, China 6 standards impose stricter requirements on nitrogen oxides, particulate matter, and particle number limits in terms of emission standards. Below is the relevant content: Implementation timeline of China 6: The implementation of China 6 emission standards will be divided into two phases. Starting from July 1, 2020, all light-duty vehicles sold and registered must comply with the China 6a limit requirements. The second phase will begin on July 1, 2023, when all light-duty vehicles sold and registered must meet the China 6b limit requirements. Methods to distinguish between China 5 and China 6 vehicles: Check the relevant content on the vehicle conformity certificate; review the environmental information vehicle list; log in to the Motor Vehicle Environmental Protection website for inquiries; verify the national standard number referenced in the vehicle consistency certificate, as the standard number and corresponding year can indicate whether it is China 5 or China 6.
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