Results for "flame sensor"
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Propane Medium 45 minutes 11

RV Furnace Blowing Cold Air? Fix Ignition Issues Fast

When your RV furnace blows cold air but won't ignite, the problem is usually a dirty flame sensor, blocked air intake, faulty ignition board, or gas supply issue. Most ignition problems can be diagnosed and fixed with basic cleaning and component checks.

Propane Hard 1-3 hours 10

Suburban SF-42Q Furnace Shuts Off After 5-10 Minutes: Troubleshooting

Furnace running 5-10 minutes then quitting usually indicates overheating from restricted airflow, weak flame, or failing control board. Check combustion air intake, propane pressure, and burner flame quality. Control board becomes suspect if other tests pass.

Propane Medium 2-3 hours 8

How to Fix Suburban SF-42 Furnace Rumble and Backfire Issues

Furnace rumble and backfire indicates air-fuel mixture problems. Check gas pressure at manifold, deep clean burner by soaking, and inspect heat exchanger. Delayed ignition from weak spark or dirty igniter also causes this. May need replacement on 20+ year unit.

Propane Medium 1-2 hours 8

Dometic RV Furnace Flame Lights Then Dies: Complete Fix Guide 2024

Intermittent flame failure varying from seconds to minutes indicates marginal flame sensor signal or airflow issues. Clean flame sensor with steel wool until shiny. Check combustion air intake and exhaust routing. Gas pressure fluctuation also possible.

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