I have a American standard thermostat (ASYSTAT655A)& I have been wanting to update to a digital thermostat. I bought a Honeywell RTH3100C thermostat and have most of the thermostat wires hocked up with the help of a friend.My only problem is My Air conditioner will come on and just stay on even on auto. My heat works fine.In my wall I have the wires going to
Red to R
Orange to O
Green to G
Yellow to Y
Blue to C because I have aux heat
White to aux
Tan is capped
And there is a jumper wire from aux to E

I appreciate any help at all::confused:

I think you need to swap the blue and white wires. All the others look fine.