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Old 07-01-2015, 09:09 PM   #1
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Suburban furnace igniting sporadically

Hello from Maine!

our vacation in our a122s at Acadia is going well except our Suburban NT-26SEQ is acting up. We are running on 20 amp service. Propane is fine (water heater and stove working well).

The furnace doesn't try to ignite most times, but every 7-8 times it "clicks" and fires up.

I've searched forums for anyone with this same sporadic issue, but haven't found this exact problem.

Anyone with any ideas for a possible campground fix? Keep in mind I am the least handy person around, but I do have some tools and can kick the trailer pretty hard.

Thanks
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Old 07-02-2015, 03:11 PM   #2
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I had an issue with my furnace on a truck camper. Furnace was an Suburban or Atwood, cant remember but similar symptoms as your. Replaced my propane regulator that connects to the tank and fixed the issue.
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Old 07-02-2015, 03:26 PM   #3
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Possibly Cob webs in the flue, blow out flue with compressed air.

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Old 07-02-2015, 03:45 PM   #4
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I'm not sure I understand: do you want the furnace to light? or is it self ingniting? The reason I'm asking is that it's July: why do you need a furnace?
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Old 07-02-2015, 03:49 PM   #5
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I'm not sure what your symptom is, Please repeat.
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Old 07-02-2015, 03:58 PM   #6
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Quote:
Originally Posted by mmanley1 View Post
Hello from Maine!

our vacation in our a122s at Acadia is going well except our Suburban NT-26SEQ is acting up. We are running on 20 amp service. Propane is fine (water heater and stove working well).

The furnace doesn't try to ignite most times, but every 7-8 times it "clicks" and fires up.

I've searched forums for anyone with this same sporadic issue, but haven't found this exact problem.

Anyone with any ideas for a possible campground fix? Keep in mind I am the least handy person around, but I do have some tools and can kick the trailer pretty hard.

Thanks
sounds like the sail switch is hanging up or fan speed is too low. can you do anything to boost 12v ??
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Old 07-03-2015, 01:19 PM   #7
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furnace

I had a similar problem
Ended up the igniter was crimped onto the bracket and had loosened up and moved enough so the spark didn't always catch the gas. I removed the igniter, moved the sparked forward and recrimped it. Worked fine.
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Old 07-04-2015, 07:28 AM   #8
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Furnace

The fan must start first to satisfy the sail switch before it will ignite. I had to replace my fan motor (two years old) it would not lite sometimes.
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Old 07-04-2015, 07:59 AM   #9
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Could be the igniter is loose and loosing electrical connections or igniter is not positioned correctly. See page 29 of attached.
Attached Files
File Type: pdf Furnace Service Manual.pdf (4.92 MB, 36 views)
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Old 07-04-2015, 02:56 PM   #10
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Thanks old coot we don't have a furnace Manuel and I can save this attachment and now I have one
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