Quote Originally Posted by Cosmicmuffin View Post
RGRJ10EZAJS ser GE5D307F480514597 Got a lo-o-o-ong distance service call.,trying to be smart on what to bring. Unit fires up Ind. motor..,HSI lites burners..,runs for few seconds and shuts down. Flame sensor was cleaned. Then replaced with O.M.E. sensor.,same thing. Customer does mention "flame lite" on board does not come on. Sorry guys thats all Ive got. Thanks ahead!
2 suggestions, check ground from stepdown transformer compared to print, in other words, some transformers secondary sides one lead must be grounded to the case. Secondly, check make sure the furnace itself is grounded. I learned this lesson the hard way, with the same symptoms.