Honeywell Chronotherm Iv Plus Filter My Air Conditioning Turned Off!?

My air conditioning turned off!? - honeywell chronotherm iv plus filter

Hello I have a Honeywell thermostat IV Plus. Theres two units, a first for my stick and facing down. The first floor is good, but the poor below the previous night after a crazy storm. The bottom plate is off and no monitor will not turn on, or I can not believe it?