Hi, Thanks for the reply. It actually appears that the ignitor and flame sensor are built into the same unit. I was able to locate some diagnostic information for the unit. I believe it is an M1MB070ABW. It is HSI ignition with a spiral wound ignitor. No pilot light. What my issue is that the diagno...

Hi All, I have a problem with this unit. It is a three/four year old M1M with A/C. What happens is, I can hear the combustion fan run and the ignitor lights up, there is a blue flame, the yellow light blinks continuously and the flame goes out in about 30 seconds or less. The main blower runs after ...