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• Troubleshooting an A/C system correctly will result in the proper repair for the unit in a timely fashion. But before performing system troubleshooting you must review the manufacturer troubleshooting chart.
• Before performing troubleshooting you must understand the system and how should be operating.
• Always use safety precaution before you start working on a system.
http://www.hvacrweb.com/article-categories/hvacr-education/
 
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