NATE HVAC Exam Prep 47, Gas Furnace Service and Combustion Diagnosis

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

Opublikowano: 2026-10-04

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: - Understanding the exact step-by-step sequence of operation for gas furnaces on the NATE exam - Identifying why pressure switches must start open before inducer activation to pass safety checks - Measuring flame sensor rectification correctly in microamps DC to diagnose ignition lockouts - Differentiating between automatic reset high limits and manual r...