I live in an apartment, had a White-Rodgers model # 1F80-361 programmable thermostat installed 3 months ago. I prefer a non-programable, so the installer set it so I could adjust it manually. Recently, I changed the time, which I shouldn't have bothered to do. Now, it defaulted back to factory settings for program, which I don't want. I don't understand why that happened. I only changed the time, didn't push the progam button. How can I get it back to work like a non-programable thermostat?