Show the reasons and solutions for the non-refrigeration of the freezer

Display refrigerators are now widely used in supermarkets and stores. The important function of display refrigerators is to protect the temperature of the products, so that the products can maintain their freshness and not easily deteriorate. However, the display refrigerator is prone to failure after a period of use, and non-refrigeration is one of our common failures. So, what is going on when the refrigerator is not cooling? What is the solution to show that the refrigerator is not cooling?

Why is the display case not refrigerated?

 1. The temperature controller of the refrigerated display cabinet is installed in the freezer, and the temperature of the freezer does not reach the temperature required by the temperature controller, so it will not stop. If the compressor is not shut down day and night, the freezer compartment may cause the extreme cooling temperature of the refrigerant. Most of this phenomenon occurs in air-cooled freezer refrigerated display cabinets.

The reason is that the frosting device of the freezer evaporator is broken, causing an ice block. It cannot be ruled out that the air-cooled fan is broken, and the air outlet is blocked by too many items in the refrigerated display cabinet, resulting in poor cooling effect.

2. The temperature of the freezer compartment of the direct-cooled refrigerated display cabinet is automatically adjusted with the temperature of the freezer compartment. You can lower the temperature of the freezer compartment. Generally, the temperature of the freezer compartment is 4-10℃. Note that the larger the number of the temperature controller, the lower the temperature, the larger the number in summer, and the smaller the number in winter. In addition, the doors of refrigerated display cabinets are frequently opened, and there are many items in the refrigerated display cabinets, which causes the refrigerated display cabinets to be uncooled or have an unsatisfactory cooling effect.

3. The reason why the refrigerated display case is not refrigerated may also be a problem with the compressor of the refrigerated display case. The compressor can be started. When you remove the air return pipe and block the outlet with your fingers, check the pressure. If it is too low, the compressor will have a problem and the compressor cannot start. Check whether the power supply of the refrigerated display cabinet is properly plugged in.

4. Open the door of the freezer compartment and check whether the lighting in the cabinet is on to determine whether the power supply of the refrigerated display cabinet is on. If the light is not on, use an electric pen or a multimeter to check whether the power socket has electricity and whether the power plug of the electric refrigerated display cabinet is well connected.

5. Use a multimeter to check whether the power supply voltage is lower than 187 volts, because the normal use voltage of refrigerated display cabinets is 187V—242V according to national standards (unless otherwise specified by the manufacturer), and compressors below 187 volts refrigerated display cabinets cannot be effective The normal startup.

6. When the ambient temperature is lower than the normal starting temperature of the temperature controller, check whether the low temperature switch of the refrigerated display cabinet is turned on. Only when the low temperature switch is turned on can the temperature controller be forcibly turned on.

What is the solution to show that the refrigerator is not cooling?

1. Don't worry first, let's open the door of the refrigerator compartment and see if the lighting in the box is on to determine if the power supply of the refrigerator is on. If the light is not on, the light may be broken. We can use an electric pen or a multimeter to check whether the power socket has electricity and whether the power plug of the freezer is well connected. If you don’t have an electric pen or a multimeter, you can use other methods to see if the power is on. For example, take our mobile phone charger to see if it works. If you feel lucky, the charger is connected.

2. When the ambient temperature is lower than the normal starting temperature of the temperature controller, check whether the low temperature switch of the freezer is turned on. Only when the low temperature switch is turned on can the temperature controller be forcibly turned on.

3. Those who need a little understanding can do this, cut the boot shell, replace the buffer tube, or tighten the screws. First find out the leaking part of the system, perform welding repair, pressure test, and evacuation, and then add refrigerant to a certain amount, usually according to the evaporator is full of frost or the refrigerator reaches the rated temperature.

4. The capillary tube or the dryer is blocked, and the outlet is hot. For this reason, remove it and remove it! In addition, household refrigerators generally have two types: direct cooling and indirect cooling. Direct cooling means that the evaporator (cooling pipe) directly exchanges heat with the freezing and cold storage rooms to achieve the purpose of cooling; the indirect cooling means the evaporator ( The cooling pipe) is separated from the freezing and refrigerating rooms, and a fan blows cold air into the freezing and refrigerating rooms to achieve the purpose of cooling.

5. The reason why the freezer does not refrigerate may also be a problem with the refrigerator compressor. Compression performance starts. When you remove the air return pipe and block the outlet with your fingers, check the pressure. If it is too low, the compressor will have a problem and the compressor cannot start. Check whether the refrigerator power supply is properly plugged in.

Well, the above content is to show the reasons and solutions for the non refrigeration of the refrigerator. That's it for today.

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