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Earlier, we discussed common faults when repairing refrigerators, focusing on the method "Look, Ask, Cut." Now, let's dive into the most important part: "Cut."
"Cut" refers to using your hands to feel the temperature of various parts of the refrigerator. When the refrigerator is operating normally, each component in the refrigeration system has different temperatures. The compressor is the hottest, followed by the condenser, while the evaporator is the coldest.
1. **Check the temperature of the running compressor**
If the ambient temperature is below +30°C and the compressor feels excessively hot, it indicates an overheating problem. This could be due to a malfunction or insufficient cooling, and the unit should be stopped for inspection.
2. **Feel the surface of the dryer filter**
Normally, the surface temperature of the filter should be close to the ambient temperature, slightly warm. If it feels significantly colder or even frosted, it suggests that the filter is clogged, causing poor refrigerant flow and throttling.
3. **Touch the exhaust pipe**
The exhaust pipe should be very hot during normal operation. In summer, it will be extremely hot, and in winter, still hot. If it doesn't feel hot, there may be an issue with the refrigerant circulation.
4. **Check the evaporator surface**
Under normal conditions, if you place a finger with water on the evaporator surface, it should feel cold and sticky. If no coldness is felt, this is abnormal.
5. **Feel the condenser temperature**
A normal refrigerator’s condenser should be around +55°C. The top is the hottest, the middle slightly warm, and the bottom close to room temperature. The condenser temperature varies with the environment—lower in winter and higher in summer.
6. **Touch the suction pipe 200mm from the compressor**
The suction pipe should feel similar to the ambient temperature, slightly cooler or warmer. If it's more than 5°C hotter or feels too cold, with dew or ice forming, it's abnormal. However, high humidity in summer can cause slight condensation, which is normal.
After performing "Look, Smell, Ask, Cut," you can further analyze the fault location and severity. Since the refrigeration system is interconnected, it's essential to identify two or more symptoms and cross-analyze them to locate the exact issue. Experience through observation, listening, and touching in different seasons and environments helps in quickly diagnosing refrigerator problems.
Dongguan Yinyin Hardware Products Co., Ltd. was established in 2005 and specializes in manufacturing a wide range of electrical components, including silver contacts, electrical contacts, double composite silver nails, riveted and soldered silver contacts, precision stampings, conductive copper posts, screws, DC/AC pins, copper sleeves, hollow needles, semi-hollow needles, four-guide components, rivets, silver dots, binding posts, AV copper sleeves, 3F07, 3F05, 215 copper sleeves, and more. We also produce various products made from silver, copper, iron, aluminum, and non-ferrous metals. Contact Mr. Chen at 13728192869 for more information.
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