Rheem-Ruud SP12049D Ignition Sensor

The Rheem-Ruud SP12049D Ignition Sensor is an essential OEM component engineered for high-recovery natural gas water heaters, specifically 75-gallon Rheem and Ruud commercial and residential models. This NG Pilot Ignition Sensor features a 24-inch lead, housing a precision-calibrated rod that utilizes flame rectification to signal the gas valve for sustained burner operation. When your system experiences intermittent lockout or fails to bridge the gap from pilot to main burner, this direct replacement sensor provides the millivolt signal integrity required for modern PlusOne Ignition Systems. As a critical safety device, the SP12049D prevents unburned gas accumulation by confirming flame presence with rapid response times. Maintaining a clean, high-performance pilot/24 inch ignition sensor ensures your unit avoids common nuisance trips and inefficient ignition cycles. Built to withstand high-temperature combustion environments, this sensor is the professional standard for restoring reliable heating performance in large-capacity natural gas water heating equipment.

• Precise Compatibility: Direct-fit OEM replacement for 75-gallon Rheem and Ruud natural gas units, eliminating the need for field modifications.
• Enhanced Signal Reliability: Features a high-grade 24-inch lead to ensure a consistent, low-impedance connection to the ignition control module.
• Improved System Safety: Employs accurate flame sensing technology to prevent furnace or water heater cycles from stalling during the ignition phase.
• Durable Construction: The Rheem SP12049D is built with professional-grade materials to resist carbon buildup and thermal stress.

What are the signs of a faulty Rheem SP12049D sensor?
If your pilot lights but the main burner fails to kick in, or if the system initiates a lockout after just few seconds of operation, the ignition sensor is likely coated in carbon or structurally degraded, necessitating a replacement.

Is the SP12049D compatible with propane systems?
No, this specific Rheem-Ruud ignition sensor is engineered for natural gas applications only. Using it with LP fuel may result in improper flame detection and safety hazards.

Can I clean this sensor instead of replacing it?
While a technician can often use fine emery cloth for temporary cleaning, a permanent SP12049D replacement is recommended for 75-gallon units to ensure long-term reliability and proper millivolt signal strength across the 24-inch lead.

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.