Water purifiers use electricity and do not use electricity. If electricity is used, the pressure pump inside the water purifier is running. It is a normal phenomenon. If the product does not use electricity, the sound of the water purification product may indicate a problem with the internal parts of the machine.
Solution: Immediately stop the water purification, disassemble the water purifier, and see if the internal parts are damaged. Then wipe the dust inside the machine, replace the damaged parts, and then assemble it for use.
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