Issues with HTTPS over Apache2 Proxy

My RC site has SSL setup properly, but when I run it using HTTPS, I get this error: [ This site can’t provide a secure connection ]

HTTPS - https://domain.com => Website Works !
HTTP - http://chat.domain.com:3000 => RC sub-domain Works !

HTTPS - https://chat.domain.com:3000 => Not Working !

Also, how do I redirect if someone type HTTP://chat.domain.com or chat.domain.com to HTTPS://chat.domain.com:3000 ?

I appreciate all the help !