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Old 10-19-2011, 08:25 PM   #1
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2005 Damon Astoria furnace won't light

My LP furnace was working fine last spring but when I tried to start it today it wouldn't light off. I check the exhaust vent and it was clear. I do see a little red light on the circuit panel flashing. Anyone have any tips?
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Old 10-19-2011, 08:34 PM   #2
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Maybe it's in a fault ? Cycle power to the furnace and try again?

Do you have the owners manual for the light diagnostic ?
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Old 10-20-2011, 02:56 AM   #3
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Hi shovell,
Welcome to iRV2. Can you provide the make and model of the furnace?
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Old 10-20-2011, 03:44 AM   #4
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If the control board led is flashing, it went into lockout. This means that if the burner did not ignite within the designated tries, it shuts down and must be turned off and back on to retry ignition sequence. Make sure gas is on, stove top burners ignite and burn to purge air from LP gas lines and retry furnace.
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Old 10-20-2011, 12:19 PM   #5
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Still won't light

I have the owners manual but do not know the manufacturer's name of the furnace. I tried the stove top burners, they light then go out. I topped off the LP tank and tried it again with the same results. So something is allowing the regulator to open and then close. ??
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Old 10-20-2011, 12:21 PM   #6
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Quote:
Originally Posted by Bug512 View Post
Maybe it's in a fault ? Cycle power to the furnace and try again?

Do you have the owners manual for the light diagnostic ?
Ya, I tried cycling it on and off. My stove top will light but then shuts off.
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Old 10-20-2011, 08:27 PM   #7
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Hi shovell,
Get the stove to work first, then see if the furnace works. While a bad fill of propane is possible it is a low probability. My first choice would be to replace the main tank gas regulator. They are about $25 at your local RV or propane dealer.

If you do replace it, after removal, look at it closely. If there is any fluid in the regulator you may have water in the coach tank.
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Old 10-21-2011, 08:52 AM   #8
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When mine did this, it was a bad control board.
Replaced it and everything is fine.
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Old 10-21-2011, 10:37 AM   #9
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If the stove doesn't work either, you have propane delivery problem. My first step would be to replace the regulator - they can get clogged or just plain fail so that little or no propane gets through. A standard LP regulator is not expensive - it is not an RV specific model. Most hardware stores, home centers, etc. carry them.

The bad news is that if you have an oily residue in the propane tank , it will eventually happen again. That requires purging and cleaning the LP tank. I wouldn't worry about it until it happens, though.
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Old 10-21-2011, 10:48 AM   #10
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I agree with GaryRVRoamer that the next logical step is to replace the regulator. When you replace it, make sure it's a two stage regulator, not a single stage like you see on a barbeque grill.

The two stage costs a little more, but keeps you in code compliance and is safer.
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Old 10-21-2011, 12:49 PM   #11
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Okay, I'll give it a try. Thanks guys.
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Old 10-22-2011, 04:25 AM   #12
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Wait! Don't replace anything yet. You have an electric LP shut off valve. You will also have a manual service valve that is centered in the coach on the tank itself. If the excess flow valve on the tank has been set off, you will get the exact symptom you are describing. You will want to find and manually close and re-open the service valve; slowly and all the way open. Turn on the electric LP shut off valve and retest the stove top until you get a good constant flame on all burners. If you still get the flameout issue, I would recommend getting a good , qualified technician to diagnose the problem. It could very well be a bad regulator but it could also be changed out to find that it is a bad service/excess flow valve in the tank.
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Old 10-26-2011, 07:45 AM   #13
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Thanks for all your help. I had an RV mechanic look at it. Turned out the hot water regulator was leaking shutting the gas off. $208.
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