Common issues affecting the lifespan of outdoor units of air conditioners

Besides the indoor unit, the outdoor unit is equally vital and directly impacts the efficiency of the air conditioning system. Being exposed to outdoor elements, the outdoor unit may encounter some issues that require quick resolution. Let's review common issues with outdoor units so you can detect them promptly and address them effectively!

Exploring common issues with outdoor units

The outdoor unit in an air conditioning system plays a crucial role in absorbing heat from the indoors and dissipating it into the outdoor space for cooling. As a result, the indoor space becomes cooler and more comfortable. Typically, the outdoor unit comprises various internal components such as the compressor, heat exchanger, circuit board, fan motor, etc. All these components are enclosed in a sturdy outer shell with high durability.

The outdoor unit is responsible for heat exchange with the external environment.

Usually, when an air conditioner fails to operate efficiently, people immediately think of issues with the indoor unit. However, they often overlook the fact that problems with the outdoor unit can also disrupt the normal functioning of the air conditioning system.

In reality, the outdoor unit is the primary component of the air conditioner. When this equipment malfunctions, repairs become more challenging due to the complexity of its internal parts. Consequently, the cost of repairing and replacing the outdoor unit is generally higher. Therefore, it's essential to understand common issues with the outdoor unit to implement effective preventive measures.

According to experts in the field of refrigeration and air conditioning repair, when outdoor units encounter issues, they often involve three components: the circuit board, compressor, and heat exchanger. Below are common issues related to these three components that you can refer to.

The circuit board (PCB) is responsible for controlling all the operations of the equipment. During usage, this component may fail due to various reasons, causing the entire system to malfunction. Some common causes of circuit board failure include: excessive voltage exceeding the specified limit, use of low-quality boards, insect infestation, and physical damage.

To mitigate circuit board burning issues, air conditioner manufacturers continuously enhance both design and internal technologies. For example, Daikin has adopted a new super circuit board, equipped with the most advanced chip, to handle multiple processes at incredibly high speeds.

Each circuit board has its voltage limit. Living in areas with unstable voltage can easily lead to circuit board burning. Therefore, Daikin's new circuit board has extended the voltage range from 150V to 260V. In cases where the voltage exceeds 440V or drops below 150V, the machine will prevent current flow to avoid circuit board burning.

Daikin air conditioner circuit boards have a wider voltage limit

Regarding insect intrusion issues, Daikin has made design changes to the outdoor unit. Additional padding has been added to seal off gaps on the unit, while the water drainage holes have been redesigned from circular to narrow slots to minimize insect intrusion and biting.

If the circuit board is the brain, then the compressor is equally vital in the outdoor unit. The compressor is responsible for transporting refrigerant to ensure the cooling process of the system.

There are various reasons why compressors malfunction and operate inefficiently. For instance, improper installation of the outdoor unit, insufficient gas charging, unstable power supply, or overloading are common causes of compressor issues. When this component fails, both the cooling capacity and lifespan of the air conditioner are significantly reduced.

To mitigate malfunctions, air conditioner manufacturers also focus on improving compressors. Daikin's Swing is an example of design and technical enhancements to reduce refrigerant leakage and operate more smoothly. Specifically, the Swing compressor moves in a circular motion to minimize friction and strong vibrations, significantly extending the compressor's lifespan.

The Swing compressor boasts an optimized design for more efficient and smoother operation

The heat exchanger (heat exchange coil) is responsible for exchanging hot air from indoors to the outside environment. If the heat exchanger operates inefficiently, the temperature of the entire outdoor unit will rise over time, leading to quicker equipment deterioration and reduced durability.

Primarily installed outdoors, the outdoor unit faces various environmental impacts. Therefore, to operate efficiently over the long term, manufacturers often choose materials for the heat exchanger with high corrosion resistance. For example, Daikin's Microchannel heat exchanger uses aluminum alloy (including aluminum and zinc) to achieve higher durability compared to conventional aluminum heat exchangers.

Aluminum alloy heat exchangers boast high corrosion resistance capabilities

Moreover, some manufacturers also apply a premium anti-corrosion coating to the heat exchanger to enhance its resistance.

Additionally, usage patterns also affect the durability of the outdoor unit. It's advisable to install the outdoor unit in well-ventilated areas to facilitate efficient heat dissipation. Regular maintenance of the outdoor unit is also necessary to ensure prolonged equipment effectiveness.

Above are common issues with outdoor units. We hope this information will help you avoid mistakes that could rapidly reduce the lifespan of the outdoor unit during usage. Furthermore, you should opt for air conditioners from renowned, reputable brands in the market for higher durability and long-term peace of mind.

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