Symptoms and causes of air conditioner compressor failure

Air conditioner compressor failure can occur for various reasons and is often characterized by specific symptoms. Here are some common symptoms and causes of air conditioner compressor failure:

Symptoms of air conditioner compressor failure

Symptoms of air conditioner compressor failure:

Insufficient cooling

One of the primary signs of a compressor problem is a lack of cool air or reduced cooling capacity from the air conditioning system. If you watch that your AC is blowing warm or mildly cool air instead of cold air, it could indicate compressor failure.

Loud or unusual noises

A failing compressor may produce unusual noises like grinding, screeching, or clanking sounds. These noises can indicate internal damage or mechanical problems within the compressor.

Frequent tripping of circuit breaker

A malfunctioning compressor may draw excessive electrical current, causing the circuit breaker to trip frequently. If you find yourself resetting the circuit breaker repeatedly, it could be due to compressor issues.

Leaking refrigerant

Compressor failure can lead to refrigerant leaks. If you notice refrigerant pooling around the outdoor unit or detect a sweet or chemical smell near the system, it could be a sign of a leak caused by compressor failure.

Compressor not turning on

If the compressor fails completely, it may not engage or turn on when the AC system is running. This will result in no cooling at all.

Causes of air conditioner compressor failure:

Lack of maintenance

Insufficient maintenance, including the neglect of air filter cleaning or replacement, may accumulate dirt and debris, leading to increased strain on the compressor and potential failure.

Electrical issues

Power surges, voltage fluctuations, or faulty wiring can damage the compressor motor or other electrical components, leading to compressor failure.

Refrigerant problems

Insufficient or excessive refrigerant levels can stress the compressor more. Low refrigerant levels reason the compressor to overheat, while high levels can lead to liquid flooding, damaging the compressor.

Improper installation

Incorrect air conditioning system installation, such as incorrect sizing, improper refrigerant charge, or improper line connections, can put excessive strain on the compressor, leading to premature failure.

Age and wear

Compressors have a limited lifespan, and the risk of failure increases as they age. Regular wear and tear over time can eventually lead to compressor failure.

Contaminants in the system

Moisture, dirt, debris, or other contaminants entering the refrigerant system can cause damage to the compressor, leading to failure.

If you suspect compressor failure in your air conditioning system, contacting a qualified HVAC technician is recommended to diagnose and address the issue properly.