York S1-024-36311-000 VFD Controller 319825-402 A lockout typically occurs if

A lockout typically occurs if the 120V HSI fails to reach the proper temperature or if the flame sensor does not detect a microamp signal within the 4-second TFI

the Armstrong 800 Series remains a standard for steam system maintenance Professionals seeking durable Armstrong steam trap replacements for low-to-medium pressure applications

Is this kit compatible with other HVAC brands

If the vacuum breaker is constantly weeping from the atmospheric vent or fails to close during pressurized flow

The flashing LED sequence corresponds to specific fault codes

York S1-024-36311-000 VFD Controller 319825-402 A lockout typically occurs ifUpgrade and maintain your industrial HVAC systems with the York S1 024 36311 000 VFD Controller, a high performance 2HP 460V Variable Frequency Drive engineered for rigorous motor speed management. As the direct OEM replacement for the discontinued S1 024 36035 000, this unit ensures a seamless swap out for technicians servicing premium packaged rooftop units and commercial air handlers. Housed in a durable NEMA 1 enclosure, this controller regulates