Burnham LEDV Intermittent Lockouts

scraphound

I've worked phone support for hydronic heating in Alaska for more than 5 years and I can't figure out an intermittent problem with my own boiler! It's a Burnham LEDV (direct vent) with a Beckett burner. It will run fine for hours, if not days, then loses its flame and locks out. If try starting it up again without doing anything then the problem continues, but if I tap the front face of the burner a couple of times with a hammer then it starts working fine. Any ideas?
(I thought of one thing while writing this). The ignition transformer connection to the electrodes is funky on these machines. It could be a loose clip. I will check it out tonight and get back to the forum tomorrow. In the mean time any other suggestions would be helpful. Thanks

EBEBRATT-Ed

Indoor oil tank? Oil line under the floor or overhead. Numerous things it could be.

Locking out could be ignition electrodes, transformer, dirty oil filter or pump screen bad primary control. slipping pump coupling.

STEVEusaPA

Seems like you need a competent tech with proper tool to actual diagnose the problem.

rick in Alaska

With the cad cell kind of hiding in there, and the funky electrodes, I would check on a bad connection. My best guess would be the cad cell socket. I take the cad cell and use my wire strippers to "squeeze" the pins just a bit so when it goes back in it makes a better contact. I have had more that one cad cell where it was only tight in half the socket, and this seems to be a good fix.
Rick

scraphound

Rick in Alaska hit the nail on the head. This was caused by a loose cad cell socket. The way I figured this out was that, after weeks of tapping, the CAD cell popped completely out of its socket. Rick... apparently you've been at this for a while. Great call!