climate control issue..help?

my control for the air passage is not responding...it stays on the front all the time...even when i tried to move it to leg or windshield it doesn't move ...just keeps blowing air from point...anyone ever had this problem and ever solve it...hope that i don't have to buy a new climate control panel...all suggestion are welcome..thanks

What happens is that hairline cracks develop in the solder joints on the
circuit board inside the heater control unit. I fixed 3 of the damn things!
(my 89GTS, my 88 ST165 and g/f's 88GT sheesh!) When you remove the heater
control unit look very closely or use a maginifying glass, to find any
cracks, then reheat and/or re-solder them.

*I also recommend that you remove the piggyback board that sits on top of
the main board, as it hides a big portion of it. The cracks develop over
time, age, heat, vibration, cheap solder, etc and the result is no
continuity of electricity. The unit defaults to the cold setting, that's why
it may blow hot temporarily, then default to cold.

Rick gave me this advice in an email and it worked for me.

sorry for the late reply, i see what you mean, and thanks a lot for the reponse...i'll check the next time that problem comes back..apparently i decided to leave it at certain route selection and after a while it kicks back in...this is a problem that i will try and fix when i have the time and once again thanks for the reponse...

What about the button that switches from recirc and fresh air? Mine doesnt seem to work, the light sort of flickers when you press the button, but only seems to stay on the first setting...I'm thinking it may be a solder problem or something like that?