A healthy Lennox 19W61 ignitor should read between 25 and 47 Ohms

though technicians should always verify total external static pressure during installation

Always verify the specific gravity on your flow charts for accurate capacity sizing

Efficient Performance: 1/3 HP 1075 RPM motor optimized for 230V systems

automatically interrupting the burner circuit or gas valve power when it detects temperatures exceeding safe operating parameters

Carrier HH79NZ057 Thermistor 340155-7024 A healthy Lennox 19W61 ignitorThe Carrier HH79NZ057 Thermistor is a critical sensing component engineered specifically for low ambient control systems in Carrier, Bryant, and Payne condensing units. This thermistor monitors liquid line temperatures to provide precise feedback to the head pressure controller, ensuring stable refrigerant flow when operating in cooling mode during low outdoor temperatures. As a genuine OEM HVAC replacement part, the HH79NZ057 ensures accurate