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Old 08-17-2016, 10:43 PM   #1
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norcold code no fl

Since I can't find a way to search old threads, I'll bring up an old topic. My model 1200 is not working on gas but is working on ac. On gas, it lights off for 30 seconds but the shuts of the flame. Seems to me it is a thermocouple issue but I don't see one.

Any thoughts?

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Old 08-17-2016, 11:22 PM   #2
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It doesn't have one! See the attached pdf.

The service manual can be downloaded from here.


See page 31 for Burner Cleaning.
Attached Files
File Type: pdf Flame Rectification sensing.pdf (38.6 KB, 28 views)

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Old 08-17-2016, 11:36 PM   #3
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Spark electrode is used for flame proving

Info on flame ionization, spark gap and positioning
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Old 08-18-2016, 08:19 AM   #4
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Think I had the same problem last year. Took coach to Rv shop. They replaced
The 12v line in the outside fridge compartment and it works fine now.
2002 HR Endeavor
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Old 08-18-2016, 10:52 AM   #5
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What Biscuit says. The igniter electrode is also the flame sensor. The usual problem with it is a boit of corrosion on the wire connection at either end. The hihvoltage spark gets through just fine, but the tiny flame sense voltage gets stopped cold if the wire connection has any surface corrosion at all.
Gary Brinck
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Homebase in the Ocala Nat'l Forest near Ocala, FL
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Old 08-18-2016, 11:31 AM   #6
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You can take a small file and stick it into the flame viewing hole and clean up the spark wire and the burner tube. As the spark jumps from one to the other, they both have to be clean. Also make sure your spark wire is far enough away to generate a spark large enough to ignite - I had mine too close and it would not light.

Take off the access panel and twist the viewing cover on the cover of the burner tube. You can turn on the frig and then run back outside to see if your getting a spark. It will try a few times before it gives you the fail code.

And double check that your propane tank valve is open. Sometimes air will get in the line so I light the stove to clear the air out. Air will also cause a NO FL code as the frig gives up before the air is cleared out.

Good luck!

Tom and Katharine
'07 Winnebago Tour 40TD, 400hp Cummins
RVing for 19 years & 150,000+ miles
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