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How to judge display cases faults from hearing
listen to display cases to diagnose faults
①When the compressor is running, there is a very loud noise of and metal collision, which is the unhooking of the internal spring of the compressor.
②Compressor running sound and 10 collision sounds, 60% of which is that the water receiving box is not fixed.
③The compressor is running with ten grunts, and the refrigeration system is not clean when evacuated.
④ Compressor buzzes , or there is no running sound or clicks , overload protector operates, 60% of display cases protector or starter problems.
⑤ When the compressor starts, it makes a buzzing sound, the compressor does not run, and the compressor is mostly stuck.
⑥ When the compressor is running, open the freezer door and listen carefully, but no hissing sound can be heard. The reason is that the refrigerant is not flowing because there is no refrigerant, the refrigeration camp is blocked or the compressor is not exhausted.
⑦When the compressor is running, there is a sound of gas discharge somewhere in the system, which is a leak point.
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