Car air conditioning control panel key failure is what reason?
The reasons for the failure of the keys on the control panel of the automobile air conditioner may include broken fuses, faulty circuit boards, broken compressors, short circuits in the power supply circuit, damaged control panels, and moisture in the refrigeration system.
damaged fuse : The air conditioner fuses (including the cooling fan and blower fuses) may be damaged due to abnormal current, vehicle modification, or line leakage, causing the air conditioner keys on the control panel to fail to work properly. At this time, check whether the fuse is blown or in poor contact, and replace a new fuse to restore the key function .
circuit board failure : air conditioning circuit board problems, especially intelligent vehicle air conditioners, may cause keys to be unresponsive. In this case, it may be necessary to replace the board .
compressor damage : If the air conditioner compressor is damaged, for example, refrigerant leaks, the air conditioner key on the control panel will fail. It is recommended to send the vehicle to the 4S shop or professional auto repair shop for repair .
Short circuit of the power supply : Short circuit of the power supply may cause key failure. Check whether the power circuit connector, air conditioner control panel connector, and air conditioner CM connector are in poor contact, and reconnect them to .
Control panel damage : If none of the above checks find a problem, the air conditioning control panel itself may be damaged. After replacing the control panel, the air conditioner functions properly .
moisture in refrigeration system : Excessive moisture in the refrigeration system may reduce the effectiveness of the drying bottle and cause ice slag to block the pipe. The air conditioning pipes need to be cleaned and the refrigerant needs to be replaced .
In short, in the case of the failure of the keys on the car air conditioning control panel, it is recommended to check and repair in time to ensure the normal use of the vehicle. When dealing with these problems, if you do not have the relevant technology and equipment, you should seek the help of professional maintenance personnel .
Automobile air conditioning control panel function
The basic functions of automobile air conditioning control panel
The automobile air conditioning control panel is a panel in which the user indirectly controls the air conditioning operating mechanism to realize various functions of the air conditioning. It usually includes the following basic functions:
temperature adjustment : Set the temperature in the car by button or knob.
Wind speed regulation : Controls the air supply speed of the air conditioner.
mode selection : such as automatic, manual, inner cycle, outer cycle and so on.
zoned control : Some premium models offer independent temperature control in the front and passenger seat areas.
Functions of the buttons on the air conditioner control panel
AC switch : turns on or off the air conditioning system. After the air conditioning system starts, the compressor starts cooling.
temperature adjustment button : usually in blue (low) and red (high), used to set the temperature in the car.
wind speed button : used to adjust the air supply speed of the air conditioner, usually have low, medium and high levels.
mode button : such as fan mode provides stronger wind, leaf mode provides natural soft wind.
Air circulation button : changes the circulation mode of air inside and outside the car.
Rear air conditioning control : Some luxury cars provide buttons in the rear to independently adjust the temperature and wind speed.
Inside/Outside circulation button : Switches between inside and outside air circulation.
Air purification button : remove harmful substances from the air in the car.
Front/rear window defogger button : used for defogging and keeping a clear view.
AUTO : Automatically adjusts the wind speed and temperature to keep the car at a constant temperature.
DUAL key : indicates the partition control key for the air conditioner, allowing the pilot and passenger seats to adjust temperature independently.
Classification and adjustment of air conditioning control panel
Air conditioning control panels can be classified according to drive mode and performance:
Driving mode : independent and non-independent. Independent type driven by special engine, cooling capacity is large but cost is high; The non-independent type is driven by a car engine and has poor stability but low cost.
Performance categories : single function type and cold and warm integrated. Single functional refrigeration, heating and ventilation systems are installed respectively, and integrated heating and cooling air blower and air duct are shared.
adjustment method : manual, electronic pneumatic adjustment and automatic adjustment. Manual adjustment by flipping the function keys on the panel, electronic pneumatic adjustment with the help of the vacuum mechanism automatic adjustment, automatic adjustment with the help of sensors and microcomputers to achieve all-round optimization adjustment.
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