My oil furnace one day stopped working, doesn't start. Oil pressure ok. But I changed the oil filter and nozzle. Again oil pressure ok. Again oil furnace doesn't start. Check the spark it's ok. Again oil furnace won't start. Check the peephole to see if I’m getting spark, no spark. Replace the cad cell and transformer. But I get a spark when I took the nozzle/electrode out of the burner head. So I left the peephole open, guess what? The furnace started. This is completely the opposite of what the cad cell does. I double-check the cad cell, high resistance with no light, low resistance with light. Again cad cell is brand new. The oil furnace only starts with the peephole open, then I close the peephole and it runs great, very smooth. But won’t start up the next time the thermostats want heat on. What’s going on???
My oil furnace one day stopped working, doesn't start. Oil pressure ok. But I changed the oil filter and nozzle. Again oil pressure ok. Again oil furnace doesn't start. Check the spark it's ok. Again oil furnace won't start. Check the peephole to see if I’m getting spark, no spark. Replace the cad cell and transformer. But I get a spark when I took the nozzle/electrode out of the burner head. So I left the peephole open, guess what? The furnace started. This is completely the opposite of what the cad cell does. I double-check the cad cell, high resistance with no light, low resistance with light. Again cad cell is brand new. The oil furnace only starts with the peephole open, then I close the peephole and it runs great, very smooth. But won’t start up the next time the thermostats want heat on. What’s going on???
I have an older fuel oil furnace without all of these safety's on it. Is there a way to adapt these to an older unit ??
Ok boos