Lennox Y4151 Module Freon This SPDT Relay is commonly

This SPDT Relay is commonly utilized for fan speed switching or as an isolation relay for low-voltage thermostats to protect circuit boards from higher amperage draws

Can this be used in CO2 systems

We recommend inspecting existing vacuum lines for cracks

ensuring consistent airflow monitoring and preventing nuisance shutdowns

This 120V ignition module provides a fixed 5-second pre-purge to clear the combustion chamber and a 4-second trial for ignition (TFI) to ensure safe burner startup

Lennox Y4151 Module Freon This SPDT Relay is commonlyThe Lennox Y4151 is a professional grade 2 Phase 3 Speed PSC Module designed to regulate Direct Drive Blower Motor performance in high efficiency HVAC systems. As a veteran preferred Lennox OEM replacement part, this module provides the precise control logic required for 2 stage heating and cooling applications, ensuring the PSC motor transitions seamlessly between low, medium, and high speed taps. This component serves as the direct replacement for