I am willing to bet you were really asking why it might do that, rather than just complaining about it. you either have no coolant in the engine block and/or a stuck thermostat maybe a broken impeller on the water pump or missing water pump belt.
I would also bet you have an LPG powered machine and are freezing up the regulator, and that is what explains the shut down that may have prevented further damage to the engine.
But it might be the headgasket is blown.
check all fluid levels and check the radiator's flow.