York 025-35139-000 Crankcase Heater 318172-701 Check for vent obstructions or

Check for vent obstructions or a failing power exhauster motor

ensuring reliable microamp signal transmission to the integrated ignition control board

MA40-UF120

Can this valve be serviced in-line

This valve is pilot-operated and requires a minimum pressure differential of 5 PSI to fully lift the diaphragm and allow flow

York 025-35139-000 Crankcase Heater 318172-701 Check for vent obstructions orThe York 025 35139 000 Crankcase Heater is a critical OEM component designed to maintain optimal compressor sump temperatures in York HVAC systems. This compressor heater is specifically engineered to prevent refrigerant migration during the off cycle, ensuring that refrigerant does not condense in the compressor oil. As a veteran technician knows, preventing liquid slugging at startup is essential for maintaining internal lubrication and protecting