Need to know fuse location for Trane Model # TWV025B140A1

Im not for sure but I think on the older model trane unit the wire from the transformer Black and Red went to a inline fuse and left on a red wire for control voltage. The fuse is not located on the control board.

TY for responding :) I bought this house in 2003, and was told the unit was only a couple of years old, come to find it it was manufactured in 1994! It was nine years old. :P It has no fuse sadly and the transformer was blown, thank goodness it was only the transformer, a $60 fix, and not something worse! Have a Blessed Day!
Carol