What should be done if the compressor is running but there is no cooling?

When a compressor is running but there is no cooling, the most effective and logical first step is to check for refrigerant levels and inspect for blockages in the system. This approach allows for the identification of common issues that could be causing the cooling failure.

If refrigerant levels are low, the system will not be able to absorb heat effectively, leading to inadequate cooling. Additionally, blockages in the system, such as clogged filters or a blocked condenser coil, can prevent proper refrigerant flow and heat exchange. By checking these aspects, a technician can pinpoint the issue that is impairing system performance.

Taking immediate action to replace the compressor, as suggested in the first choice, is not advisable without first diagnosing the system. If other issues are causing the lack of cooling, replacing the compressor may not resolve the problem and could result in unnecessary expenses.

Turning off the unit and waiting, or adjusting the thermostat settings, would not address the root cause of why the system is not cooling. Instead, these actions could lead to further delays in diagnosing and fixing the problem. Thus, the best practice is to investigate the refrigerant levels and potential blockages as initial steps in troubleshooting the issue.