We use the lighting of the refrigerator to conveniently take food in the refrigerator. Once the light is off, it will affect the daily use. If it is long-term, it will waste 11 kWh when the 15 watt bulb is continuously powered in the box for one month. Therefore, whether it is bright or not, it is not convenient for our normal daily use and waste of electricity. Therefore, when the internal lighting of the refrigerator does not appear, etc., the cause of the connection should be connected as early as possible to eliminate the malfunction. So what is the reason why the refrigerator lighting is not lit? How should I repair it? When I go to convenience stores, supermarkets to buy things or drinks, I often see that the supermarket freezer lights don't seem to be bright. Ask the master, but I don't know. Let's analyze the specific reasons, repair methods and replacement. The way.
Analysis of the causes of the failure of the refrigerator lighting
The refrigerating cabinet lighting is to use the opening and separating of the switch shrapnel of the cabinet door liner and the illumination lamp to achieve the opening of the door light and the closing of the door light. If the lighting fails, the following two types of faults can be repaired by yourself.
Checking whether the supermarket freezer light bulb is lit in the cabinet is very simple. When the cabinet closes the door, you can gently press the magnetic door strip with your finger to see the inside of the cabinet from the gap. If the cabinet light is on, it indicates that there is a problem check. The way to keep the light bulb in the box is very simple. When the box closes the door, you can gently press the magnetic door with your finger to peek into the box from the gap. If the light inside the box is lit, it indicates that there is a problem. One possibility: the supermarket fresh-keeping cabinet door is open and the light is not bright: causing such a phenomenon, in addition to power failure, poor contact of the power plug, there are reasons such as broken bulb, poor contact of the bulb and the lamp holder. Another possibility: it is also possible that the thermostat action stops the compressor and the lamp is damaged or has poor contact. Check whether the filament is blown, whether the lamp head is in good contact and whether the lamp switch is faulty, and take corresponding measures. It may also be that the power plug is loose or is knocked down by other objects, causing a sudden power failure, as long as the plug is fixed. It may also be due to a sudden power outage in the room, as long as the other lights in the room are checked for electricity.
It may be that the fuse is blown and a new fuse can be replaced. If there are no other faults, the compressor should be able to start immediately. When the door is opened, the lights in the freezer will also be on. If the new fuse is blown after the power is plugged in, it indicates that the circuit system is faulty. Check whether there is a short circuit in the line, and check the start relay, thermal protection relay, thermostat, motor and compressor one by one to eliminate malfunction.
How to repair the refrigerator lighting
Refrigerator lighting is not bright
The refrigerator lighting lamp is used to contact and separate the switch shrapnel of the box door liner and the illumination lamp, so that the door opening lamp is bright and the door closing lamp is extinguished. The reason why the refrigerator is turned on and the light is not lit:
1. The bulb burned. Only need to replace the same type of bulb, the general specification is 220 volts and 15 watts.
2. When the light bulb is on, it does not light up. This is probably due to poor contact between the light bulb and the lamp holder. If the screw, the bulb and the lamp pad are not in good contact, use a small screwdriver to push the copper contacts in the lamp holder up and make them touch each other. Tighten the bulb and check the adjustment spring pressure.
3. The lighting circuit is broken, and the place where the wire breakage is detected can be repaired.
The above three are cases where the illumination light does not illuminate when the compressor is operating normally. There are also cases where the compressor does not work and the lights are not lit:
1. The fuse of the refrigerator is blown. To find out the cause of the fuse, replace the new fuse of the same specification.
2. The power plug is disconnected or has poor contact, and the broken part is repaired or the fixed contact position is detected.
Refrigerator lighting is bright for a long time
The method of checking whether the bulb is lit in the box is very simple. When the box is closed, the magnetic door can be gently pressed with a finger to peek into the box from the gap. If the light inside the box is lit, it indicates that there is a problem. This problem is generally difficult to find, but as long as the user carefully checks it, you can easily know. If it is not detected in time, it will produce a series of symptoms such as frequent compressor starting, increased noise, and increased power consumption. Reasons why refrigerator lighting is on for a long time:
1. The door light of the refrigerator fails at the beginning, and the switch can be replaced directly.
2. The switch position is incorrect. When the door is closed, the button cannot be pressed to cut off the lighting circuit. Adjust the position of the door light (including the position of the thermostat), use a screwdriver to loosen the fixing screw of the thermostat, and move the thermostat slightly forward so that the switch shrapnel of the light happens to be in contact with the door frame when closing the door. Position and then tighten the thermostat fixing screws to make the beginning work properly.
When repairing, open the freezer door of the refrigerated supermarket, use a screwdriver to loosen the fixing screws of the supermarket freezer thermostat, and move the thermostat slightly forward so that the switch shrapnel of the lighting happens to be in the position where the door is closed when the door is closed. Then tighten the thermostat fixing screw; or take a piece of cardboard about 2 square centimeters, tape it to the switch shrapnel at the corner of the supermarket cabinet door frame to achieve the function of cutting off the power when closing the door.
1. The supermarket freezer closes the door and the light does not go out: this is often caused by the negligence of the supermarket refrigerator when it leaves the factory or the vibration during handling. If it is not detected in time, it will produce a series of symptoms such as frequent compressor starting, increased noise, and increased power consumption. A single 15 watt light bulb will waste 11 kWh in a month when it is continuously powered in the cabinet.
2, the supermarket freezer door is open and the light is not bright: caused by such a phenomenon, in addition to power failure, poor contact of the power plug, there are reasons such as broken bulbs, poor contact between the bulb and the lamp holder.
When repairing, first cut off the power, open the door, remove the bulb from the supermarket refrigerator thermostat box, if the broken wire, then change the bulb, the general specification is 220 volts and 15 watts. If the screw, the bulb and the lamp pad are not in good contact, use a small screwdriver to push the copper contact pieces in the lamp holder upward to make them contact each other. The fault can be eliminated.
If the lamp is broken, you can fix it yourself if you can repair it. If you can't fix it yourself or need to install a special lamp, you are advised to contact the original manufacturer.
How to replace the refrigerator lighting
The lights in the supermarket freezer can make us more convenient when choosing food, but because the wet environment inside the cabinet is also relatively simple, the lighting is questionable. When the lighting is damaged, what should we do? Replace it? In fact, many consumers will think that replacing the lighting is a difficult one. At that time, it is relatively simple in the practice. In general, the lighting is installed in the temperature control box of the refrigerator, so the lighting The switch of the lamp is directly controlled by the door. In the process of replacing the lighting in the supermarket freezer, it is necessary to power off the power. Loosen the fixing screw of the thermostat with a screwdriver and move the thermostat forward slightly so that the switch shrapnel of the lighting happens to be closed. The position of the door frame touches, and then tighten the thermostat fixing screw.
Or we can take a piece of cardboard, and then use tape to attach the switch spring to the corner of the door frame, so that the power can be reached. In the case of replacing the traditional mechanical temperature-controlled supermarket freezer lighting, in the case of power failure, we can first remove the dial of the thermostat downward, and then move the refrigerated cartridge holder to the right to disengage it from the fixing fixture. Pull out again, you can see the bulb, unscrew the damaged old bulb, and slowly screw the new bulb into the screw seat of the thermostat box, pay attention not to screw it too fast, too tightly, to avoid damage to the screw seat. The compression springs make the bulbs in poor contact, which is good for no other doubts during the replacement process. However, it is worth noting that if the display cabinet is an electronic temperature control system, because this type of lighting is mostly in-line, it is more complicated in the process of replacement, so the best is to ask the professional master. Replace it to avoid damage to other parts during the process of disassembly.
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