Abstract: An electronic control device for opening and closing valves in a valve assembly that actuates a variable pitch fan system capable of operating in a plurality of fan blade pitch positions including a temperature switch actuated in response to a temperature condition of the engine, a pressure switch in series with the temperature switch and actuated in response to a pressure condition of the variable pitch fan system, and a time delay relay control in parallel with the temperature switch and the pressure switch for transmitting a timed signal therefrom. The device also includes a first solenoid in series with the pressure switch, a second solenoid in series with the time delay relay control and connected to the first solenoid, and wherein transmission of at least one of the timed signal, the temperature condition signal, and the pressure condition signal opens or closes the valves of the valve assembly of the variable pitch fan system.