Some refrigerators make a squeaking sound as soon as they are turned on, while others produce noise a few minutes after starting. Below are several simple methods to eliminate or reduce refrigerator noise for readers' reference.
1. Directly eliminate the noise between refrigerator components and the cabinet.
(1) Noise caused by the cooling pipe, low-pressure pipe touching or vibrating against the cabinet or condenser, or the capillary tube vibrating against the cabinet or condenser, can be resolved by gently separating these pipes with your hand so they do not touch the cabinet or condenser. The distance to separate them should be determined based on the actual situation; if you cannot reach in, you can use a smooth bamboo strip to complete the task.
(2) A squeaking sound produced by compressor vibration can be checked by touching its outer shell with your hand. Try pushing it inward/outward, left/right, and up/down. If the noise disappears when pushed in a certain direction, it indicates that one of the four screws fixing the compressor is loose. At this point, hold the compressor shell with your left hand until the squeaking stops, then tighten the screw with your right hand. Release your left hand and check if the noise has decreased. Repeating this process a few times will basically eliminate the sound.
(3) If the condenser vibrates intensely, press different parts of the condenser's cooling pipe with your hand. If the squeaking sound disappears at a certain spot, it suggests that the connection between the cooling pipe and the flat plate heat sink is loose. Secure it firmly with adhesive to resolve the issue.
2. Reduce the impact of noise on the environment
(1) Properly elevate the four feet of the refrigerator by 3-6cm to increase the air convection space under the cabinet. This way, the compressor noise and other noises from the bottom of the refrigerator will be emitted from the bottom of the cabinet, reducing the noise. Additionally, increasing the air convection space helps dissipate heat from the compressor and the auxiliary condenser under the baseplate, saving energy.
(2) Place the refrigerator so that its back is not parallel to the wall but forms a 1-3 degree angle, creating a trumpet-like shape, which can reduce the impact of noise on the environment.
(3) Attach sound-absorbing materials such as fiberglass to cardboard or plywood, then nail it to the wall behind the compressor. This reduces the reflection of compressor noise and other sounds, thereby minimizing the environmental impact of the noise.
Haier Refrigerator Maintenance Reference: Simple Methods to Reduce Refrigerator Noise
Provided by Beijing Haier Refrigerator After-sales Service Center.