For 12V DC furnace only.

The Fan 50 Plus Pins has been designed to work with the industry standard 6-pin "edge connector" or the newer 6-pin "header" style connector to address changes in the industry while maintaining backwards compatability. It comes with a removable mode select jumper on the board and a separate set of red and orange wires to convert older furnaces, giving them fan control features. The fan control feature must be used.

FAN 50 Plus Pins is designed to replace the new Suburban® and Atwood® / HydroFlame® Fan Control boards as well as maintain backward compatibility with the Fan 50 Plus, and UIB Fan Control boards which have been available since 1994. This board can also be used to upgrade older furnaces to add the Fan Control feature. The basic purpose of a Fan Control Ignitor Board is to shut the fan motor off if the board fails to sense a flame after the third ignition try. Thus, battery drain is reduced and the needless blowing of cold air is eliminated. The FAN 50 Plus Pins, after shutting the fan motor off, will wait for 1 hour and repeat the whole sequence again before permanent shut down. For 12 VDC Furnaces only