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Troubleshooting Compressor Failures: A Complete Guide

Learn how to troubleshoot and prevent repeated compressor failures in your building's HVAC system. This comprehensive guide covers common issues, maintenance tips, and essential repair techniques.

Common Issues and Maintenance Tips

⚙️The compressor was changed seven months ago but has already failed.

⚡️The inverter board, power board, and fan board have all gone bad.

⚠️Possible issues in the building may be causing the repeated failures.

🧹The units in the building have not been cleaned for 12 years, leading to problems.

🔑The speaker emphasizes the importance of accepting responsibility.

Essential Repair Techniques

🔍The system should be running and checked from the low side for any color changes, which could indicate a problem.

⚒️If there is a color change, a special treatment is needed to remove the acid from the system.

🔧The process involves removing wires and a heater to access the thermistor.

🌡️The compressor is running hot, indicated by the discharge.

⚗️The oil is poured into a container and mixed with a chemical solution.

FAQ

How often should the units in the building be cleaned?

The units should be cleaned regularly, ideally at least once a year to prevent issues. Proper maintenance can extend the lifespan of the HVAC system.

What should be done if there is a color change in the system during checks?

If there is a color change, a special treatment is needed to remove the acid from the system. It's important to address this issue promptly to prevent further damage.

What are the signs of a running hot compressor?

A running hot compressor can be indicated by the discharge. It's crucial to address this issue as soon as possible to avoid further damage to the system.

How can the oil be tested for impurities?

The oil can be tested by pouring it into a container and mixing it with a chemical solution. After shaking the container and allowing the solution to separate, any impurities will be visible.

What is the importance of accepting responsibility in HVAC maintenance?

Accepting responsibility is crucial in HVAC maintenance as it encourages proactive problem-solving and prevents repeated failures. It's essential for all stakeholders to take ownership of the system's upkeep.

Summary with Timestamps

😢 0:35The HVAC system has a bad compressor and multiple boards that have gone bad.
🏢 3:42The speaker discusses the need for cleaning the entire building and the consequences of not doing so.
6:59The video demonstrates how to use a recovery setup for a refrigerant system and check for color changes as an indicator of its condition.
🔧 11:05The video shows the process of replacing a damaged thermistor and identifying a discharge issue in a compressor.

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