M.C. Enterprises 36999MC Igniter Electrode – Dual Sense Replacement for Atwood RV Furnaces

Restore reliable ignition in your RV furnace with the M.C. Enterprises 36999MC Igniter Electrode. This dual-sense igniter electrode is designed as a replacement for many popular Atwood Hydro Flame RV furnaces, providing both spark ignition and flame sensing to ensure safe and consistent furnace operation.

When the furnace calls for heat, the igniter electrode generates the spark needed to ignite the propane burner while also sensing the burner flame. If the igniter becomes cracked, worn, or coated with carbon buildup, the furnace may fail to ignite or may shut down shortly after startup.

Replacing a worn igniter with the 36999MC electrode is one of the most common repairs for RV furnaces that won’t ignite or repeatedly shut down during startup.

Key Features

• M.C. Enterprises replacement igniter electrode
• Dual-sense design provides ignition spark and flame detection
• Replacement for many Atwood Hydro Flame RV furnaces
• Helps restore reliable furnace ignition
• Durable design for high-temperature furnace environments
• Direct replacement for worn or damaged furnace igniters

Compatible Furnace Models

The M.C. Enterprises 36999MC Igniter Electrode is compatible with the following furnace models:

8516 Series

• 8516-I
• 8516-II
• 8516-III

8520 Series

• 8520-I
• 8520-II
• 8520-III

8525 Series

• 8525-I
• 8525-II
• 8525-III

8531 Series

• 8531-I
• 8531-II
• 8531-III

8535 Series

• 8535-I
• 8535-II
• 8535-III

Always verify your furnace model before ordering to ensure compatibility.

What This Part Does

The 36999MC igniter electrode performs two important functions in your RV furnace ignition system.

Ignition: Generates the spark that ignites the propane burner.

Flame sensing: Detects the burner flame and signals the control board that ignition has occurred.

If the electrode cannot properly detect the flame, the furnace will shut down as a safety precaution.

Signs Your Furnace Igniter May Need Replacement

You may need to replace the igniter electrode if your furnace shows the following symptoms:

• Furnace blower runs but burner will not ignite
• Furnace attempts ignition but shuts down quickly
• Repeated clicking during startup
• Furnace locks out after several ignition attempts
• Visible cracks or heavy carbon buildup on the electrode

Replacing the igniter electrode often restores normal furnace ignition.

Frequently Asked Questions

What does a dual-sense igniter electrode do?
A dual-sense electrode both creates the ignition spark and detects the burner flame, allowing the furnace control board to confirm successful ignition.

What furnaces use the 36999MC igniter electrode?
It is used as a replacement for igniters in Atwood Hydro Flame furnaces including the 8516, 8520, 8525, 8531, and 8535 series.

Can a dirty igniter cause furnace problems?
Yes. Carbon buildup or corrosion can prevent proper spark generation or flame sensing.

Why Buy From RVFurnaceGuys.com?

At RVFurnaceGuys.com, we specialize in RV furnace parts and heating system repairs. Our goal is to help RV owners and technicians quickly diagnose furnace issues and find the correct replacement parts to get heating systems running again.