Fault phenomenon: The compressor runs for a long time without stopping, the freezer does not frost, and the refrigerator temperature cannot reach the set value. Analysis and maintenance: First, check that there are no obvious leakage signs at each interface of the refrigeration system pipeline. Insert an ammeter to measure the working current which starts at 1.2A, normal, then rises to around 1.5A. Cut open the seal of the compressor process pipe, and a large amount of gas sprays out, indicating that there is no leakage in the system and no blockage in the pipeline. After careful inspection, it was found that the compressor operating sound is louder than normal, and the temperature rise of the compressor is too fast when touched by hand. Check the high-pressure exhaust again, try to block the high-pressure exhaust pipe by hand, and feel that the pressure is relatively low, indicating that the compressor exhaust valve plate is faulty. Open the compressor housing for inspection, and it was found that the exhaust valve plate has accumulated carbon deposits, and the edge of the exhaust port has also accumulated carbon deposits, causing a significant decrease in the power of the compressor.
Handling method: Remove the carbon deposits, find a new steel sheet to grind a new valve plate, install it, and test the machine, the fault is eliminated. The freezer compartment of the Ronshen refrigerator does not frost, and the cooling effect is poor.
Article source: Beijing Ronshen Refrigerator Repair http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3465372.