In this HVAC Training Video, I Show How to Test if a HSI is Bad without having to take it out for a Visual Inspection and Accidentally Breaking it. I cover Silicon Nitride and Silicon Carbide HSI's. I explain and show types, installation location, testing, and the sequence of operation for a gas furnace in heating mode. I show Silicon Nitride and Silicon Carbide HSI's. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety. UEI DL479 Multimeter With Temp Sensor: Alligator Jumpers- ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Related Playlists Troubleshooting Gas Furnaces Playlist: Gas Furnace Parts Playlist: ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Our HVACR Educational Books, E-Books, Workbooks, Cards, Posters, and PowerPoints: All Our Educational Products on Our Site: All Our Educational Products on Amazon: Mini Split Book and E-Book on Our Site- Mini Split Paperback on Amazon- Mini Split Paperback on TruTech Tools- Refrigerant Charging Book and E-Book: Refrigerant Charging Paperback on Amazon: ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Our HVACR Online Resources! Our HVAC Calculators: Our Newest Articles: Try our HVAC/R Quizzes! Our Other Resources: ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Tools Used in Our Videos! Tool Links on Our Site: Our Tool List on Amazon: Support the Channel by purchasing tools through TruTech Tools! Use this link Save 8% at checkout using code "acservicetech" ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Follow Us On Our Social Media & Podcasting Channels! Patreon: Facebook: Instagram: X: LinkedIn: Tiktok: @acservicetech Spotify: Apple Podcasts: ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ⚠️ Disclaimer: Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ #hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #visual #accidental #testing #sequence #operation #HSI #silicion #nitride #carbide ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal.