30268 36043 RV Burner Head & 35100 91788 Furnaces Ignitor Electrode Kit for Domestic Atwood Hydro Flame 79 85 AFS & AFM Series LPG Heaters Fireplaces Atwood RV Furnace

30268 & 35100 RV Furnace Burner Head and Ignitor Electrode Kit

Key Features

• Precision Flame Distribution: The 30268 burner head is engineered with accurately spaced combustion slots to provide an even, circular flame pattern, ensuring consistent heat transfer and preventing "hot spots" in the furnace chamber.
• High-Temperature Alloy Construction: Manufactured from a heavy-duty, heat-stabilized alloy designed to withstand the rapid thermal cycling of RV heating systems without warping, cracking, or corroding over time.
• Advanced Ceramic Insulation: The 35100 ignitor features a high-grade ceramic insulator that prevents electrical "leakage" or arcing to the furnace frame, ensuring the full spark energy is delivered to the gas stream.
• Dual-Probe Sensing Technology: Designed to provide both a high-voltage spark for ignition and a flame-sensing signal back to the control board, preventing the gas valve from staying open if the burner fails to light.
• Optimized LPG Combustion: Specifically calibrated for Liquid Propane (LPG) environments, the burner head’s venturi interface facilitates the correct air-to-fuel ratio for a clean, blue, soot-free flame.

Replaces / Cross-Reference Part Numbers

• Burner Head: 30268, 36043.
• Ignitor Electrode: 35100, 91788.

Compatibility & Fitment

This kit is the primary ignition and combustion set for Atwood and Dometic (Hydro Flame) RV furnaces. Key compatible series include:

• Atwood Hydro Flame 79 Series: Fits 7912, 7916, and 7920 models (including II and HF versions).
• Atwood Hydro Flame 85 Series: Compatible with 8516, 8520, 8525, 8531, and 8535 (including III and IV iterations).
• AFS & AFM Series: Direct fit for the newer Atwood Foundation Series (AFS) and Mid-Size (AFM) RV furnaces.
• Dometic Furnaces: Compatible with modern Dometic-branded units that utilize legacy Atwood internal components.
• Note: While this kit fits both 79 and 85 series, please verify the physical shape of your burner (some older 89 series units may use a larger rectangular burner).

When to Replace

• Furnace Won't Ignite: You hear the "click-click-click" of the igniter, but the burner fails to light, often due to a cracked ceramic insulator on the electrode or a clogged burner head.
• "Limit Switch" or "Ignition Lockout" Errors: The furnace tries to light three times and then shuts down; this is often caused by a dirty electrode that can no longer sense the flame.
• Sooting or Yellow Flame: Indicates the burner head slots are rusted or clogged with spider webs/debris, causing incomplete combustion and dangerous carbon monoxide buildup.
• Rumbling or Booming Sound: Delayed ignition caused by a weak spark or a rusted burner flange can lead to a small "explosion" when the gas finally ignites.
• Visible Corrosion: The burner head shows heavy rust or flakes of metal, or the electrode probe is burnt down/shortened from years of heat exposure.

Installation Tips

• Safety First (CRITICAL): Shut off the main LP gas supply and disconnect the 12V DC power to the furnace before disassembly. Gas leaks and electrical sparks are a high-risk combination.
• Check the Gap (PRO TIP): Before installing the new 35100 electrode, ensure the spark gap (the distance between the probes) is set to 1/8 inch (3.2mm). If the gap is too wide or too narrow, the furnace will not light.
• Clean the Burner Tube: While the burner head is removed, use a flexible brush or compressed air to clear the burner tube of spider webs. Spiders are attracted to the smell of propane and are the #1 cause of RV furnace failure.
• Check the Ceramic: Inspect the new electrode for any hairline cracks in the white ceramic during shipping. A cracked insulator will cause the spark to jump to the frame instead of the burner.
• The Leak Test: After reassembling the gas manifold, use a non-corrosive gas leak detection bubbles/solution on all fittings. Never use a flame to check for propane leaks.