1. The refrigerator is noisy

The problem of semiconductor refrigerator noise is generally in the fan. The fan directly affects the refrigeration effect of semiconductor refrigerator. If the fan speed positioning, detail processing and other aspects are not in place, the problem of noise will appear. The noise of compressor refrigerator must be relatively loud, but there are also compressor refrigerators that do well in noise reduction technology of compressor. The first characteristic of compressor refrigerator is low noise. If you find any noise, first check the fan. The fan is aging and the noise is naturally loud. Second, check the compressor (if there is a compressor). If the compressor sounds abnormal, you have to find the manufacturer to repair it. Choosing a low-noise car refrigerator can not only improve the quality of life of car travelers, but also embellish the taste of home bedrooms, because in addition to car use, car refrigerators can also be used as a supplement to home refrigerators, which can be used in bedrooms and living rooms.

2. No refrigeration

For semiconductor refrigerator, first check whether the fan is running; second, check the product current. If it is close to 5 amperes, it is safe to say that there is no problem with the Peltier component, PCB or fuse switch; if there is no current, check the voltage at the connection of Peltier component on PCB. Then, if the display voltage is 12V or higher, the PCB and temperature fuse are in good condition. It is recommended to replace the Peltier component. If there is no voltage, check the fuse to determine whether the PCB or the fuse is broken. If there is no problem in these aspects, we have to find the manufacturer to repair them. Of course, to check these items, you must have tools. If you don't have tools, you have to be anxious. It is not recommended to conduct in-depth inspection of compressor refrigerator, because the technology of compressor is relatively complex.

3. The machine keeps cooling

This situation mainly occurs in online shopping customers, because when online shopping is mailed, the express company is not responsible for it and falls things badly, leading to the box rupture. That is to say, the air-conditioning has been leaking out, and the refrigerator has been unable to reach the predetermined temperature, so it can only be cooled all the time. If the crack is not big, you can use glue and other things to seal. If the crack is too large, it will not be scrapped and it will have to be repaired by the manufacturer. So remind online shopping friends, when receiving goods, we must carefully check, don't feel that checking in front of the delivery person is not trust him, in fact, it is completely to protect their own rights and interests.

4. High power consumption

Unless it's a cheap or imitation product, the design and production of regular brand products focus on the power consumption, which is generally not much higher. Another reason is that the refrigerator does not have a low-voltage protection device. After the car stalls, it forgets to turn off the power supply of the refrigerator. The refrigerator works all the time and consumes the electricity from the car battery, which directly leads to the ignition failure when the car starts again. It is recommended to buy a car refrigerator with low voltage protection device, or buy a voltage protection device, or remember to power off the refrigerator directly after parking.

5. The actual temperature does not match the display temperature

For the users who use the car refrigerator to transport pharmaceutical preparations, because of the high temperature requirements, it is better to measure the temperature in the box before the official use of the car refrigerator. However, it should be noted that the temperature displayed on the display screen of the refrigerator is not necessarily the same as the temperature measured when the thermometer is hung, because the position of the measuring point is different. Just like a household refrigerator, the temperature on the side of the door is different from that on the inside of the refrigerator.