Another "NORCOLD" Question

[Bingo 57]

OK fellas here's a different one, working on a Norcold model #N512UL. Runs on elec just fine, go to fire it up on gas & it will fire up but never hold the flame. It does continue to "snap" or try to ignite while the burner is on and doesn't stop till the gas valve closes & unit goes into fauler. ( I know this by the F on the display on the fridge) OK now being kinda old school I start lookin for the thermocouple... nope. So what is controlling the gas valve after the unit "is" fired up. Or am looking in the wrong direction ? Is there a temp sensor in the stack that controls the gas valve?

As always thanks for the help!
Bingo

[chuckster57]

More often than not the sparker is also the "flame sensor" if its not in the flame or is faulty the gas valve will close.

[Bingo 57]

OK I can see that, Now I did CK the the location of the igniter in the flame looked good to me. Is there a way to "ohm" out the sincer?

Bingo

[chuckster57]

I don’t believe so. We have had some limited success taking it out, wiping it down with WD-40 and re installing.

[Bingo 57]

The igniter / sincier ? Remove it & wipe it down with WD-40... Not with some polishing cloth
Bingo

[Bingo 57]

OK so I pulled the ignitor / sensor & cleaned as you had said, assuring the gap is within the spec. Same results. Can I assume that the sensor / ignitor line is bad?

Bingo