hello all! im curious about a problem i had today with trying to get my furnace to stay on. we lost power yesterday ( the wind storm), and i run my furnace off my generator when this happens. never had an issue until today. everytime i turned the furnace on, it would cycle normally until it got to the part of staying on. as soon as the flames came on, the furnace would cut off, then start all over again. i cleaned the flame sensor and installed a new igniter. neither helped. the furnace is older and has always worked for me this way. as soon as the power came back on, the furnace ran normally. someone mentioned maybe low gas pressure. im trying to get this figured out, i bought the generator to heat my house. any ideas? i dont understand why it didnt work, and what the difference is between generator and house electrical. i would really appreciate it.........