Williams P625471 Control Board Refrigerant the Johnson Controls P70AA-400 is

the Johnson Controls P70AA-400 is an industrial-grade high pressure control engineered specifically for condenser fan cycling and high-side pressure management

Industrial Build: Features ball bearings and a 1/2 horsepower rating for reliable performance in demanding climate conditions

Rated for a maximum boiler pressure of 50 PSI and temperatures up to 250°F

The York 029-21710-000 Filter Drier is a critical liquid line component designed for high-capacity moisture removal and acid neutralization in residential and light commercial HVAC systems

Williams P625471 Control Board Refrigerant the Johnson Controls P70AA-400 isThe Williams P625471 Control Board is a critical genuine OEM replacement part designed for precision furnace orchestration in high efficiency Williams heating systems. As a direct fit gas valve control module, this board manages the ignition sequence, flame sensing, and blower timing to ensure safe and consistent heat cycles. For technicians troubleshooting intermittent failures or lockout codes, installing this HVAC circuit board eliminates the