I am trying to hook up a Honeywell RTH7000 to a whalen unit Model # W602E. The wiring diagram has faded to the degree of partial readability.
The unit has 6 wires red, blk, brn, yellow, blue, orange
I have: red to R
Blk to C
Brn to G (fan)
Yell to Y1
Or to Y2
Bl to O/B
From what I can tell this is correct, but it is not working, can someone with Whalen knowledge give me some help with this set up? Thanks in advance

Look to the beginning of this board for the sticky notes. There is a wiring crossover ;located there. If that fails you will have to trace the wires to see what they control and wire accordingly.