Troubleshooting guide
RV furnace locks out or will not ignite
Use this when a furnace fails ignition attempts, flashes lockout, or stops after blower operation.
Use this atlas to identify likely meaning and prepare for service. Shut off power, LP gas, fuel, or water when a listed appliance condition involves flame, gas smell, exhaust, generator shutdown, high temperature, moving jacks/slides, refrigerant, 120 VAC, control boards, repeated ignition failure, or a persistent lockout. Call the appliance maker, RV dealer, or a qualified RV technician for repair.
Owner-safe checklist
- Turn the thermostat off.
- Check only for obvious blocked intake/exhaust openings.
- Stop repeated start attempts and call service if ignition fails again.
Code tables for these appliances
Related fault codes
Official sources
Suburban/AtwoodSuburban Gas Furnace Operation GuideSuburban/AtwoodFrequently Asked Questions about Suburban RV ProductsDometicDometic DF Series Furnace Installation ManualDometicDometic DFSA/DFSD/DFMD/DFLD/DFLA Furnaces Operating ManualFurrionFurrion RV Furnaces Troubleshooting and Service ManualDometicDometic Hydro Flame AFM Series Furnaces Technical Installation Manual 32471FurrionLippert QR-224 Furnace Lockout ResetFurrionLippert Furrion Furnace Blower Turns On with No Ignition