NATE HVAC Exam Prep 46, Heat Pump Service and Defrost Diagnosis

Podcast: Trades Exam Prep · Ran Chen, EA, CFP®

Opublikowano: 2026-10-03

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to diagnose reversing valve internal leakage using temperature differential checks across valve bodies. - The operational differences between time-temperature and demand defrost initiation and termination rules. - How to distinguish normal frost patterns from abnormal icing caused by low refrigerant charge or airflow restrictions. - Key definitions and exam applications f...