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Open Roads Forum  >  Tech Issues

 > Atwood model 8531-Iv-dclp furnace

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eq6352

Tn

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Posted: 10/16/13 04:11pm Link  |  Quote  |  Print  |  Notify Moderator

I have an Atwood 8531 furnance in my trailer and I just replaced the circuit board because it was bad. I am still not getting ignition when the unit comes on. What is the voltage supposed to be to the ignition probe? I am only getting between 7 and 9 volts. I am getting gas but it will not ignite.

wolfe10

Texas

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Posted: 10/16/13 04:25pm Link  |  Quote  |  Print  |  Notify Moderator

What is voltage where trailer wire goes into furnace?

Is the fan turning/air flowing-- assume so since gas valve is opening?


Brett Wolfe
1997 Safari Sahara 3540
EX: 1993 Foretravel 36' U-240


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eq6352

Tn

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Posted: 10/16/13 05:07pm Link  |  Quote  |  Print  |  Notify Moderator

I have 12.6V coming to the control board. The fan is running and the air flow is good. The LED on the control board is green until it tries to ignite. Then it turns red during the ignition cycle.

Kirk

Livingston, Texas.

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Posted: 10/16/13 06:42pm Link  |  Quote  |  Print  |  Notify Moderator

I am wondering why you replaced the circuit board? If you are measuring the voltage to the spark probe when it fires very low as the service manual lists that as a "high tension" lead and does not specify a voltage but it is in the 1000V or so range. They do advice not to attempt to measure it.

I suggest that you download a copy of the service manual from the site of Bryant RV and study it.


Good travelin! ........Kirk
Professional Volunteer
Fulltimer for 11 years,
URL: www.adventure.1tree.net


Old-Biscuit

Verde Valley

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Posted: 10/16/13 08:03pm Link  |  Quote  |  Print  |  Notify Moderator

Electrode is out of adjustment
Electrode is faulty
Electrode high tension wire is bad
Bad or loose ground

I suspect your electrode is bad

Here is a service manual that covers your model......LINK


2007 RAM 3500 QC LB SRW 5.9L CTD 48re 4:10 4K in bed 'quiet genny'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
Hit the Road Debt Free & Clear April '07
Came off the road still Debt Free & Clear Jan. '14


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