Failure to Install Rubber Gaskets or Using Old, Worn-Out Gaskets
This is one of the most common reasons why the outdoor unit of an air conditioner produces loud noises and strong vibrations. As it is usually placed outdoors, the components of the outdoor unit are exposed to various weather conditions such as sunlight, rain, and wind. Over time, the rubber gaskets (pads under the base of the outdoor unit) can become hardened, brittle, or even completely damaged due to environmental factors, creating gaps.
Additionally, the screws fixing the base in place may loosen, causing the outdoor unit’s fan to vibrate strongly and make annoying noises. This issue can be resolved by simply replacing the rubber gaskets or tightening the screws. However, if the installer forgot to install the rubber gaskets in the first place, it is a serious oversight and should be addressed immediately. Having to fix such mistakes can be frustrating for many people.
Outdoor Unit Not Cleaned for an Extended Period
If the outdoor unit is not cleaned for a long time, it can accumulate dirt and debris from being exposed to the outdoor environment, hindering its operation and producing unwanted noise.
Foreign Objects Falling into the Outdoor Unit
Another issue that can cause loud noises from the outdoor unit is the presence of foreign objects inside. Similar to the previous reason, but instead of dirt and debris buildup over time, a foreign object such as a mouse or a lizard may suddenly fall into the unit and get stuck, creating loud noises and unpleasant odors. If you suspect this situation, promptly inspect and address the issue.
Malfunction of the Outdoor Unit’s Fan
During the rainy season, the fan of the outdoor unit operates continuously and is exposed to rainwater, which can cause the lubricating oil in the equipment to dry up, resulting in unpleasant noises.
Additionally, if the fan blades are broken, they will spin out of alignment, causing vibrations and noise. Occasionally, the internal wires in the outdoor unit may also come into contact with the fan, producing unwanted sounds.
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