We wouldn't recommend doing any boiler or heating system repairs yourself unless you have extensive maintenance experience. Modern boilers have a reset button that you can use in some circumstances, but never use it more than twice in a row if it doesn't fix the problem.
It's a better idea to call a professional, even if your boiler goes out at 2:00 am in February. Call us at Staten Island Plumbing for emergency service any time of the year.