When a t stat is wired correctly by most(not all) hvac pros, the color codes are;
RED= power to T stat. Note; R & C are sometimes 'jumped'
Note ;unless a "diyer" knows exactly what is causing a T stat to not perform properly ,it is best left to a hvac pro.
in the majority of cases it turns out it is not the Tstat afterall.
In very rare cases does a T stat fail, it usually is another component in the heat/cool unit that breaks down.
Last edited by Hube; 12-03-2006 at 08:03 AM.