We recently purchased a Rudd ac/furnace in June, 2010. It stopped working in November and we have had trouble since. The furnace will not come on after it has been off for a few+ days. We have an older manufactured home with an older outside electrical box. We tripped the outside breaker once and it came on. The next time it didn't so we replaced the breaker. It didn't come on again two days ago; we tripped the breaker to no avail. I can hear the theromostat making a clicking noise as though it's coming on but it doesn't.
You are not tripping a breaker. You are either turning it on or off or resetting it. So what is it. Are you resetting a tripped breaker or are you just turning it on and off. Flipping it back and forth?
You need to make sure you have power at the breaker terminals (where the wires connect) when the furnace will not start up. Do nothing before you test for power.
It is possible the breaker is good and the breaker connection to the panelboard is bad. If the breaker is turned on and not trippped and you have no voltage it's right there in this breaker panel. If there is power it could be a loose connection somewhere on the AC/heat circuit.
If you do not understand what I just wrote, call an electrician or HVAC tech to check it for you.