Refrigerator Defrosting Tips

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Refrigerator frost problem is a common problem in our daily life, have you ever had this problem? Below I will reveal the scientific principles and professional skills of refrigerator defrosting to help you easily solve these 1 life problems.

(1) Why is regular defrosting necessary?

1. The inevitability of frosting

When the refrigerator is running, the water vapor in the air will condense into frost when it is cold.

Direct cooling refrigerator due to the evaporator directly attached to the inner wall, frost is more obvious.

Although the air-cooled refrigerator circulates cold air through the fan, the blockage of the drain hole will still cause local frost.

2. The harm of frost

When the thickness of the frost layer exceeds 5mm, the heat exchange efficiency of the evaporator will be reduced by more than 30%, resulting in frequent startup of the compressor and an increase of 15%-25% in power consumption. Long-term frosting will also corrode the aluminum tube of the evaporator and cause refrigeration.

(2) Safety Preparations Before Defrosting

1. Power Off and Protection

When defrosting, be sure to unplug the power plug to avoid the risk of electric shock. It is recommended to prepare insulating gloves, plastic frost scraping plate (metal sharps are prohibited), absorbent towel and basin. Food from the refrigerator can be transferred to a cooler, while food from the freezer should be wrapped in dry towels to prevent thawing.

2. Environmental control

Place a waterproof mat at the bottom of the refrigerator to prevent condensation from soaking the floor. If the evaporator is located at the top of the refrigerator (as in older models), you should prepare a step stool in advance to ensure safe operation.

(3)、efficient defrosting 4 step

1. Natural melting method

Turn off the power of the refrigerator, open the door of the refrigerator, cover the surface of the evaporator with a towel soaked in hot water (water temperature 60-70 ℃), and use steam to accelerate the softening of the frost layer. After the frost layer is loose, gently scrape along the evaporator lines with a plastic scraper to avoid damaging the aluminum tube. This method takes 2-4 hours and is suitable for light frosting.

2. Forced wind heat method

Use the hair dryer at low temperature (≤ 40 ℃) to blow the frost layer over a long distance (above 30cm), and cooperate with the plastic scraper to clean it synchronously.

Note: It is forbidden to direct the hair dryer to the plastic parts such as thermostat and lighting lamp to prevent high temperature deformation. This method takes 1-2 hours and is more efficient.

3. Hot water circulation method

Inject warm water (40-50 ℃) into the drain hole, and repeatedly pull and dredge with a hose. After the drain hole is unblocked, the frost water will flow into the water receiving tray through the drain pipe and evaporate naturally. If there is too much water in the water receiving tray, it can be extracted by syringe or cleaned regularly (it is recommended to clean once every 3 months).

(4)、Tips for Frost Prevention and Maintenance

1. Thermostat Settings

It is recommended to set the refrigerator compartment at 4-5°C (to avoid frost caused by setting it too low), and the freezer at -18°C.

2. Door Seal Maintenance

Every month, use a cotton swab dipped in food-grade silicone grease to apply to the magnetic surface of the door seal to enhance sealing. If the door seal is found to be aged or cracked, it should be replaced promptly (cost about $20-50).

3. Humidity Control

Place silica gel desiccants in the refrigerator compartment (replace once a month), or use breathable storage boxes to store vegetables to reduce water vapor entry.

(5)、Handling Special Situations

1. Severe Frost Treatment

If the frost layer exceeds 1 cm and recurs frequently, there may be a refrigerant leak, thermostat malfunction, or door seal damage. In this case, you should contact an authorized service center, use a leak detector, and avoid adding refrigerant yourself.

2. Safety Warnings

Do not use metal tools such as knives or screwdrivers to defrost, to prevent scratching the evaporator and causing refrigerant leaks. If oil stains are found on the evaporator (signs of refrigerant oil leakage), immediately stop the unit and contact a professional.

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