Always match the pick-up and drop-out voltage specifications of your existing relay

maintaining the original engineering specifications for Trane TUD/AUD series furnaces

This is typically an automatic reset switch that re-engages once suction pressure returns to normal levels

It utilizes a 25-micron filtration rating to eliminate solid contaminants and debris that threaten compressor reliability

Always verify the full model and serial number

Fenwal 35-655800-003 Control 322057-301 Always match the pick-up andThe Fenwal 35 655800 003 is a microprocessor based 24V hot surface ignition (HSI) control designed for precise burner sequencing in gas fired heating applications. Engineered for reliability in furnaces, boilers, and commercial water heaters, this ignition control module manages the 1 trial ignition sequence with high level diagnostic support. Operating on a 24VAC power supply, the unit provides a stable 7 second trial for ignition (TFI) period,