My oil boiler will not fire. What do I check first?
The tank gauge — running dry is the number-one cause on the township lanes, and everything else is secondary until fuel is confirmed. Then the emergency switch, the breaker, and whether the burner is locked out (red reset button popped). If the tank has fuel and the burner just hums or locks out, that is a service call: nozzle, electrodes, or fuel pump.


