Quote Originally Posted by beenthere View Post
The TH6220 does not have lock out ability. So either an outdoor stat must be added. Or you need to get a thermostat that has lock out ability.

Do you use its set back feature? If so, don't, your costing yourself money if you do.
There you go Beenthere found out that it was not able to do this so as he stated you have 2 options. New t-stat or outdoor sensor....

I would go for the new t-stat personally but that's me. The question now is why do you feel that the lockout is set to high. Since the t-stat does not have the ability then something else might be going on with the system? Please post back!!!