Burnham V7 hard lockout


New member
Burnham V7 that experiences occasional "hard lockout" on the controller LCD display. This appears to be an ignition issue as I can reset the controller and it will fire up, first try. There will be an odor an sometimes a puff of smoke from the flame inspection port on light off, which indicates it had some un burned fuel in the chamber.

I have replaced the electrodes (think they are set correctly) and replaced the HV transformer as it was original and the spring contacts appeared corroded. I put in new electrodes and an nozzle (why not?) and it ran perfectly for a few weeks. Now it has happened again, twice in a few days.

What could I be missing?