York S1-025-35354-000 Flame Sensor

The York S1-025-35354-000 is a flame sensor crucial for safe and efficient operation in York HVAC equipment. It detects the presence of a flame during combustion by measuring electrical resistance. When a flame is present, the resistance falls within a specific range (typically 5-50 kΩ). If no flame is detected, the resistance deviates from this range, signaling the control board to shut down the system. This safety feature prevents gas leaks in case of flame loss. Made with high-temperature resistant materials (withstanding -20°C to 100°C), this lightweight (0.03lbs) sensor ensures reliable operation and is easy to install or maintain.