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Old 09-24-2017, 12:36 AM   #1
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Default refrigerator won't light on propane

I have an older RV, with a Dometic 2353, it's the kind where you hold down the propane button and push in the igniter button to start it on propane.

I had difficulty starting it before I left on vacation, almost gave up except I'm too stubborn to give up. I could hear it try to start only a couple of times after repeatedly pushing the igniter button. Once during my trip it lit fairly easily and after that I couldn't light it again, didn't even hear that foomph! noise it generally makes. I have propane and all other propane appliances are working without any problems.

I've returned from my trip and everything I've searched on the internet has turned up slightly different problems than the one I'm having. I took off the back door and vacuumed it out, hoping it would help. Which was gross but not where the the flame would be, that was relatively clean for a 12 year old semi neglected RV.

I'm including a picture the electrode/jet area. Any ideas?
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Old 09-24-2017, 03:50 AM   #2
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Nice clean burner. Have a helper inspect is there is a spark from the spark igniter when you try to fire up. If there is no spark to igniter the burner, it won't start.
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Old 09-25-2017, 02:42 AM   #3
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It sparked but only once. We switched places and again it sparked once but not at all after that.

This is my first RV and I'm finding there's a lot I don't know. I'm hoping it's something easy I can fix because repair rates are fairly high here. Every trip brings a new issue, but it's still fun.
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Old 09-25-2017, 03:15 AM   #4
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You probably need a new piezo igniter. Part # 2931796011 It sends the spark to the burner to ignite.

Test #2 .... just for grins see if you can have your helper ignite the pilot with a lighter (as you are inside doing the ignition sequence...)
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Old 09-25-2017, 03:19 AM   #5
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.

If you can hear the spark, but no flame,

then the problem is in the LP.

It is either you have no LP,
or the LP is not being delievered to the burner. eg. the valve is shut.

The valve is controlled by the electronic brain and the thermostat.
One of them might be bad.
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Old 09-25-2017, 03:27 AM   #6
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As I remember my old gas refrig with one of the piezo lighters also had a red button you had to hold to get the gas to flow without the flame. You had to hold the red button until the safety got hot.

The flame would blow out whenever a truck went by.
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Old 09-25-2017, 04:38 AM   #7
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I'm not hearing the spark, I saw it briefly spark just once when I think it should be sparking whenever the igniter button is pressed. My SO saw the same thing when we switched places.

I do have a button I hold down first which provides the propane, then begin pushing the igniter. I'll try to light it with a lighter or long skewer tomorrow.

The propane was on and I still have somewhere between 2/3 and full tank, all other propane appliances are working. I appreciate everyone's help.
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Old 09-25-2017, 04:56 PM   #8
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When I sold my 04' Rialta, the fridge would not work on propane. I cleaned the burner but still would not stay lit. The flame would lite but would go out after releasing. The problem is the thermocouple. While you hold down the button, this bypasses the safety shutoff of propane until the thermostat warms up to keep the valve open. Research your fridge for manuals and troubleshooting. You then can find out where you thermocouple is and part number to replace it. If your fridge lites with a lighter, then your piezo is bad.

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Old 09-26-2017, 04:02 AM   #9
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We were able to get the refrigerator lit using a lighter.

I'll buy the piezo igniter and see if that fixes it, hopefully it's an easy installation.

Thanks for your help
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Old 09-26-2017, 11:22 AM   #10
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You could also check to make sure the gap between the electrode and burner tube is within the specified 1/8" to 3/16" range.

electrode gap.JPG

electrode gap photo.JPG
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