Jameson Thermostat Manual Faulty Jameson Programable Thermostat?

Faulty Jameson programable thermostat? - jameson thermostat manual

Our central air conditioning not blowing cold. We've found 69, but remains around 78 in the house. Everything seems like forever. There is a "comfort" button, which says it is 78 Who knows how to change the level of comfort in one of these thermostats? I have no manual, which, with the thermostat in the house. I am not able to find online manuals for each model of Jameson. Ideas?

Addendum: I just yesterday the filter.