What's the fridge flame supposed to look like ?

This is a brand new burner assy. I've cleaned the old one but waiting for my meter to show up to make sure the regulator is behaving before calling the vendor back again. Hopefully by the end of the week

Get a wire brush and use one of the wires and clean the jet.
or replace the assembly.

If that doesn't help go down the line to the regulator.

SCVJeff wrote:
Gjac: it's so random it's hard to know what really fixes it. I can but my finger over the home and adjust the flame but obviously not for long. I'll look at the pressure this weekend hopefully and see where it sits.

Randy: the burner chamber is press-fitted into the jet so I can't get anything in there. About all you can do with these is turn them upside down and blow them out. One thing I haven't done is pay attention to when it happens: right at power on when everything is cold, or after it warms up ?

Any way to look inside, or check for burrs, or chads?

Gjac: it's so random it's hard to know what really fixes it. I can but my finger over the home and adjust the flame but obviously not for long. I'll look at the pressure this weekend hopefully and see where it sits.

Randy: the burner chamber is press-fitted into the jet so I can't get anything in there. About all you can do with these is turn them upside down and blow them out. One thing I haven't done is pay attention to when it happens: right at power on when everything is cold, or after it warms up ?

If it's backfiring, you are not getting clean laminar flow and mixing of the air and propane from the orfice, the air bleed mixing ports and then flowing out the openings where it is supposed to burn. Something is causing raw propane to flow backwards to the point of ignition near the igniter, creating the popping sounds when it all burns off, inside the tube.

I wonder if you got a bum part for the new one? Or an alignment issue?

Maybe a burr on the inside, can you run a flex ball hone inside to knock off any burrs near the gas vents where the gas starts burning? Poor or worn press dies not cleanly cutting the vents and leaving burrs?

SCVJeff wrote:
Gjac: I've had the same problem getting fine debris, in my case likely salt, just inside the burner and that will cause the flame to yellow up, AND pre-detonate the LP in the chamber. That causes it to backfire. The first time that happened I cleaned and scraped, blew it out, and never did get it where I wanted it to be. Its amazing the tolerances on these things. I might build a little mix slider, but at sea level shouldn't have to.

Chris: I'll look at that too, but to be clearer, the flame isn't going out above the burner, its igniting within it and I observe flame coming out the 4 air vents. When that happens there is no reignation spark because the flame never went out. Strange eh?

Jeff before you build a slider just try a flat head screw driver and cover the first slot to see if the flicker goes away. By moving the blade of the screwdriver over the slots you are essentially creating a slider. If it stops the flicker/backfire the problem is probably the burner assuming the orifice is good and pressure. Just to further clarify when I was having this problem when mine would backfire it would come out those holes, only when it backfired not all the time.

Gjac: I've had the same problem getting fine debris, in my case likely salt, just inside the burner and that will cause the flame to yellow up, AND pre-detonate the LP in the chamber. That causes it to backfire. The first time that happened I cleaned and scraped, blew it out, and never did get it where I wanted it to be. Its amazing the tolerances on these things. I might build a little mix slider, but at sea level shouldn't have to.

Chris: I'll look at that too, but to be clearer, the flame isn't going out above the burner, its igniting within it and I observe flame coming out the 4 air vents. When that happens there is no reignation spark because the flame never went out. Strange eh?

I would check electrode alignment. Should be centered on burner, 3/16" gap.

SCVJeff wrote:
I'm getting an occasional backfire out of it. I guess the next step is to blow it out again and maybe find a WC" meter to check pressures

Is this a new burner tube or did you clean it with a wire wheel and reinstall it? That occasional flicker or backfire as you describe sounds like a problem of the air to propane ratio being off. If it is still your old burner and it still flickers after you blow it out again and check the pressure and it is good reread my first post and Wizards post.

I think I'll look at regulator pressure too because there is still a little yellow left. It's possible the jet is wonky. I had a burner once that would backfire like this that had a little slag internally that would occasionally detonate in the chamber when it superheated.

And No, there is no adjustment on this burner