🔥 521099 – Suburban RV Furnace Ignition Control Board

(Furnaces made after 2014)

The Suburban 521099 is a factory-authorized DSI ignition control board designed for safe startup and flame monitoring in select Suburban RV furnaces and water heaters. This direct-spark ignition (DSI) module ensures reliable burner operation by managing the ignition cycle and verifying flame presence before engaging heating.

🔧 Key Specifications:

• Part Number: 521099

• Ignition Type: Direct Spark Ignition (DSI)

• Voltage: 12V DC control circuit

• Compatibility: Suburban RV furnaces & water heaters

• Housing Color: Typically gray or silver

• Weight: 1.0009 lbs

• Category: HVAC Controls > RV Heating Components

• Stock Location: Quinn Supply

• SKU: 521099

💡 Features:

• Manages spark ignition and flame sensing

• Integrated diagnostics for easy troubleshooting

• Ensures safe burner engagement and shutdown

• Direct OEM replacement—no rewiring needed