I have an oil-burning furnace (AirEase Advantage is the brand) It won't run. Last p.m. it would kick on & you could hear it trying to light but it never did & went back off. I would push the reset button & try again. Then it wouldn't allow me to re-set it anymore(light keeps blinking, even after pressing "re-set). It has run out of fuel several times recently & I wonder if the line has maybe stopped up? I have heard it said that if the oil runs out it can drag grit & trash from the bottom of the barrel into the line. HELP! What can I do to eliminate that possibility? Or should I? I am a single mom-3 kids-really can't afford to call someone----AND IT'S COLD! 10 degreees here last night. Thanks in advance