Hi,I have a goodman 4 ton combo unit and I just installed a manual t-stat from a dig-t-stat ,the unit heat good but when it get to the tem.reached,the unit and blower would not shut off,the t-stat woul click but the unit and blower run all night,what all can I do

Check the green wire since that causes the blower to run without a call for heat. Also make sure thermostat is set to auto NOT on for the fan setting.