Check These First:

Is it getting power?

Check your fuses or circuit breakers to make sure they don’t need to be reset. Remember, if your home’s power is out or disconnected, your system may not work.

Is the thermostat set correctly?

Check to make sure they you have your themostat set correctly. Make sure that it is not being influence by afternoon sun or a draft from a window. Both of these scenarios can trick your system to stay on too long or not long enough.