top of page

Gas Furnace Troubleshooting- Testing the Hot Surface Ignitor!

In this HVAC Gas Furnace Video, I go over how to test if you have a bad hot surface ignitor. HSI Troubleshooting. I go over what the resistance value should be, what type of HSI lasts longer, what voltage you should read, and what step of the sequence of operation the hsi should glow in a heater. How to troubleshoot and fix a broken heater!

Most Recent Videos

Advice for Residential Techs Moving To VRF Commercial Systems!
01:01
HVAC Thermistor Sizes and Testing!
08:07
The Importance of Removing Moisture From an Empty HVAC System!
01:05
Copeland Mobile App And New Features!
02:44
Discussing the Single Stage Condensers & Multi-Position Air Handlers From Cooper & Hunter!
00:41
Wireless Digital Manometer From UEI!
01:47
Mini VRF vs Multi Zone Mini Split Systems!
02:39
GRIT Youth Trade Camp!
01:10

AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors!

NAVAC LOGO Black_edited.png
Accutrak Logo
TruTech-Tools-Logo-Main (3)[528].png
HavenRGB-FC w_grey horz.png

AC SERVICE TECH, LLC

Updates List

Thanks for submitting!

Thanks for all your continued support! I appreciate all the comments, questions, and responses that I receive from each of you. I look forward to responding to many more! If you have an HVACR related question, drop it in the comment section of one of the YouTube videos at the AC Service Tech YouTube Channel and I will do my best to respond.

 

For business related inquires email us at info@acservicetech.com

Check back regularly as we are always updating and improving this website!

© 2026 AC Service Tech, LLC.

bottom of page