Airflow, venting, or exhaust fault
Use this when a furnace, water heater, refrigerator, or rooftop HVAC code points to airflow, pressure, venting, exhaust, or freeze protection.
Owner-safe checklist
- Shut the appliance off.
- Look only for obvious external blockage.
- Do not operate gas appliances with blocked exhaust or soot.
Official sources
- Dometic DF Series Furnace Installation Manual
- Dometic DFSA/DFSD/DFMD/DFLD/DFLA Furnaces Operating Manual
- Suburban Gas Furnace Operation Guide
- Frequently Asked Questions about Suburban RV Products
- Suburban SF-VH Furnace Ducting Guide
- Coleman-Mach Frequently Asked Questions
- Coleman-Mach Rooftop Air Conditioner Operation and Maintenance Instructions
- Coleman-Mach Air Conditioner Ceiling Plenum and Control Kit Installation Instructions
- Suburban Tank Water Heaters Operation & Maintenance Guide
- Furrion 2.4GPM Tank-less Gas Water Heater Troubleshooting and Service Manual
- Furrion F2GWH Tankless Water Heater User Manual CCD-0005833
- Furrion RV Furnaces Troubleshooting and Service Manual