For decades, Bill Johnson was a visible presence in the HVACR industry as a business owner, college teacher, author, and technical specialist. In his e-book, Btu Buddy’s Guide to HVAC Troubleshooting, he shares his tried-and-true tips for a broad range of issues. For example, to help a technician figure out why a small office’s 4-ton unit that used a capillary tube metering device was not cooling properly, “Btu Buddy” asks several troubleshooting questions:
• What was the coil boiling temperature of the evaporator when you checked the pressure?
• What should the boiling temperature be for an air conditioning coil?
• Where did the large puddle of water under the condensing unit come from?
Btu Buddy points out the importance of looking at and touching the system components to help find answers. In addition, he clarifies how liquid refrigerant can dilute the oil lubricating the compressor, and eventually decrease performance.
Learn more about Btu Buddy’s knowledge and advice, click here.