ok so i started my heater up the other night and the thing started up perfectly. heated my house up and shut off. when it tried to restart i heard it flame up and run for about 10 seconds and shut down. it did this about 4 or 5 times before it shut off completely and now nothing happens at all. i have no power to the unit at all and no led light flashing. im stumped. any help at all would be awesome. thanks. guys.