Robertshaw 41-409 Hot Surface Ignitor

The Robertshaw 41-409 Hot Surface Ignitor is a high-performance silicon carbide ignitor engineered for demanding HVACR applications. Constructed from high-purity recrystallized silicon carbide (Crystar), this 120V AC furnace ignitor maintains exceptional thermal strength and stable electrical resistance over extensive 15, 17, and 45-second ignition cycles. This 271M series component is designed for precise compatibility with residential and commercial heating systems, including Carrier LH33ZS001 through LH33ZS004 models. It features 18-gauge nickel chrome lead wires with high-temperature fiberglass insulation and a Type D terminal connector for a secure, moisture-resistant electrical path. To ensure efficient combustion initiation, this direct replacement ignitor achieves a consistent 17-second heat-up time. As a primary OEM replacement part, it provides a reliable solution for technicians troubleshooting erratic burner ignition in furnaces, boilers, and rooftop units.

• Precise Compatibility: Serves as a direct cross-reference for major brands including Carrier, Rheem (90434300), Trane (IGN00026), and White-Rodgers (767A-370).
• Superior Conductivity: Features 18-gauge nickel chrome lead wires that are metallized in place for maximum mechanical holding strength and low-resistance electrical contact.
• Thermal Durability: The high-purity silicon carbide design resists cracking and oxidative degradation, performing reliably under high-temperature cycling.
• Simplified Installation: Comes with a Type D Molex connector and 5.25-inch lead wires, allowing for immediate integration into established wiring harnesses.

• How do I test the Robertshaw 41-409 for failure? Use a multimeter to check the cold resistance across the lead wires; an open circuit or infinite resistance indicates a fractured element requiring immediate replacement.
• Can this ignitor be used in 208/240V systems? While some control modules operate on 208/240V, they must step the voltage down to 120V AC to match this ignitor's operating specifications.
• Is minor handling of the carbide element safe? Avoid touching the gray silicon carbide element directly, as skin oils can create hot spots that lead to premature failure during the ignition cycle.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.