York S1-025-30788-700 Flame Sensor

The York S1-025-30788-700 Flame Sensor is a critical OEM replacement component designed for precise flame rectification within residential and commercial furnace assemblies. As a direct replacement for the legacy 025-30788-000, this sensor operates by utilizing the ionized particles in the gas flame to conduct a microamp signal back to the integrated furnace control board. When the York furnace flame sensor detects a stable flame, it allows the gas valve to remain energized; conversely, a lack of signal triggers an immediate safety shutdown to prevent the accumulation of unburned gas. This HVAC ignition safety part is essential for resolving common furnace short cycling issues and ignition lockout codes. Built to withstand high-temperature combustion environments, this rod ensures reliable furnace flame detection and is a standard inventory item for contractors troubleshooting intermittency in York, Luxaire, and Coleman equipment.

• Direct OEM replacement for 025-30788-000 ensuring exact fit and alignment in the burner transition.
• High-grade ceramic insulator prevents voltage leakage to ground for accurate microamp signal readings.
• Critical HVAC ignition safety component that prevents hazardous unburned gas flow.
• Corrosion-resistant metal alloy rod designed for prolonged exposure to intense heat.
• Resolves furnace flame sensor cleaning failures when the probe is oxidized beyond field restoration.

• How many microamps should a York flame sensor produce? Most York furnace controls require a minimum signal of 0.5 to 1.0 microamps, though a healthy sensor typically produces 2.0 to 5.0 microamps DC.
• What are the symptoms of a failing S1-025-30788-700? The most common sign is the furnace lighting for 2–5 seconds and then immediately shutting down, often followed by a specific "low flame signal" LED flash code.
• Can I use a generic sensor instead of the S1-025-30788-700? Using the York S1-025-30788-700 Flame Sensor ensures the correct rod length and offset, which is vital for proper positioning within the flame envelope.

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.