Vacuum 1991 190E fresh air vent

[just-n-time]

I changed out the pod for fresh air system, i had to remove three lines green/wht gr/yl and gr/bl I failed to take pics now I have trouble. first I was getting a/c and heat at the same time, re open the system found one vacuum line fell off, fixed that, but when i push the heater button i get a/c. I have slight heat if i do not push the button in, I also get very little movement from the vent flapper. I am not sure of the hose conection to the pods. not sure of the vacuum juntion block eather, that is as to its working condition. yet I tend to think it is ok because untill the pod rubber failed every thing worked fine. Any one who can shed some light please do, thanks.