During use, if the fan encounters a fault or problem, what are some common troubleshooting methods?

When using a 12V wireless electric DC fan, if you encounter a fault or problem, here are some common troubleshooting methods:
Check the power connection: First, make sure that the power plug is fully inserted into the power outlet, and the contact between the plug and the outlet is good, without looseness or shaking. If the plug is not plugged in tightly, it may cause unstable power supply, which will affect the normal operation of the fan. Second, check whether the power outlet is powered. You can test whether the outlet has power by plugging in other electrical devices. If the outlet has no power, it may be caused by a circuit failure or power outage. You need to check the circuit or wait for power to be restored. Finally, check whether the power cord is damaged or broken. The power cord is an important part connecting the power outlet and the fan. If the power cord is damaged or broken, the current cannot be transmitted normally, which will affect the operation of the fan. When checking the power cord, carefully observe whether there are cracks, wear or exposed wires on the surface of the line.
Check the battery status: If the fan is powered by a battery, the battery status is also an important factor affecting the operation of the fan. Check whether the battery is exhausted. You can test whether the fan is working properly by observing the power indicator on the battery or trying to use a different battery. If the battery is exhausted, replace it with a new one in time. Check whether the battery is placed correctly. When replacing the battery, make sure that the positive and negative poles are correctly matched, otherwise it may cause a short circuit in the battery or damage the fan. At the same time, pay attention to whether the model and specifications of the battery match the fan to avoid incompatibility. Finally, if the fan is not used for a long time, it is recommended to remove the battery to prevent battery leakage or damage to the internal circuit of the fan. When storing the battery, place it in a dry, cool place away from direct sunlight or high temperature environment.
Check the remote control: First, make sure the battery of the remote control is working properly. If the remote control uses replaceable batteries, try to remove the battery and check whether the battery has signs of corrosion, leakage or exhaustion. If the battery is low or damaged, replace it with a new one in time. Secondly, try to aim the remote control at the fan's receiver and make sure that there are no obstacles (such as furniture, walls or other electronic devices) blocking the transmission of the signal. The straight-line distance between the remote control and the fan should be as short as possible and there should be no obstacles blocking it to ensure stable transmission of the signal. Finally, check whether the buttons on the remote control are working properly. Gently press each button to observe whether any button is stuck or damaged. If a button is not sensitive or cannot be pressed, there may be a fault inside the button. You need to contact the manufacturer or professional maintenance personnel for inspection.
Check the fan blades and interior: If the fan makes abnormal sounds or vibrations when running, it may be caused by damaged fan blades or foreign objects inside. After unplugging the power plug and making sure the fan has completely stopped running, you can carefully disassemble the fan (if possible) and check the blades and internal mechanical parts. First, observe whether the blades are cracked, deformed or broken. If the blades are damaged, they need to be replaced with new ones in time to avoid further damage to the fan or safety hazards. Secondly, check whether there is any foreign matter (such as dust, hair, paper scraps, etc.) accumulated inside the fan. If there is any foreign matter, it can be gently removed with a vacuum cleaner or soft cloth. Please note that water or chemical cleaners should be avoided during the cleaning process to avoid damaging the internal circuit or components of the fan.