This is a BRAND NEW White Rodgers Integrated Fan Control Circuit Board. This board has been updated several times but is a direct replacement for the old White Rodgers #s listed below. The White Rodgers # is 50A55843. Thanks for looking and Good luck.
The control board is the "brain" of your unit, coordinating and executing the operation of other various components by sending voltage when and where needed. A control board is constantly monitoring sensors and safety switches in the unit.
50A55-474 50A55-571 50A55-843