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Old 03-23-2017, 02:50 AM   #1
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Furnace

Darned furnace... why does it cut out and not restart? Is it a battery issue? Does it even need a battery. I need help before I perish
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Old 03-23-2017, 04:32 AM   #2
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Dam furnace... why does it cut out and not restart? Is it a battery issue? Do it even need a battery. I need help before I perish


Our furnace is doing the same thing. Turn it on, it runs, warms up the RV then shuts off. It will not restart after that. Unless l turn off the system and then back on.
The FR3 is Surly the RV from hell.
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Old 03-23-2017, 07:26 AM   #3
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try google: troubleshooting suburban (or Atwood) rv furnaces. You'll get at least 10 YouTube videos and a .pdf service manual you can download. Between those, a VOM and a few choice 4 letter words... I've been there before with an Atwood. It's unlikely that it's your battery. Hope you don't have to pull out the kitchen sink like I did on a Jayco. If you look at the videos, you'll at least know if you're in over your head
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Old 03-23-2017, 09:47 AM   #4
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Our furnace is doing the same thing. Turn it on, it runs, warms up the RV then shuts off. It will not restart after that. Unless l turn off the system and then back on.
The FR3 is Surly the RV from hell.


We hate ours too.. they couldn't make it any cheaper without calling it a tent
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Old 03-23-2017, 02:20 PM   #5
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We hate ours too.. they couldn't make it any cheaper without calling it a tent


I'm letting it go back to the bank. We are done with RV's. The entire RV industry will feel the effects of the pice of junk FR-3 and the industry should black list forest river.
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Old 03-23-2017, 02:22 PM   #6
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Can't blame you
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Old 03-24-2017, 08:49 AM   #7
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furnace

There should be at least a 2 year warranty on your furnace. The furnace has a separate warranty from FR. It was not manufactured by FR just installed by them. Good luck.
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Old 03-24-2017, 12:21 PM   #8
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So the dealer said these furnaces are not meant to be used without shore power because they draw too much from the battery and the problem is our battery. So how about the rest of you guys can you run your furnace without shore power and or the generator? And how long will it stay on ?
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Old 03-24-2017, 12:25 PM   #9
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Darn Furnace

We are in a FR3 motorhome, dry camping and need heat but the furnace won't stay on.. we have to use the generator to get it to work. Dealer says these furnaces are not designed to just pull power from the battery .. please say it isn't so and if so how do we fix it
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Old 03-24-2017, 12:43 PM   #10
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I merged your two threads as they are on the same issue.

If the furnace is shutting down on battery, but will run fine when the generator is running, it is a low voltage issue. Running the furnace in cold weather uses a considerable amount of 12V power. If you have only one battery and it is cold, it will kill the battery in about one night ( two batteries in two nights).. The furnace is designed ( for safety reasons) to not fire up if the voltage is too low. You may need additional batteries or reduce your 12V demand when you need the furnace. Running the generator will also work. Also after a night on the battery, you will need to run your generator for some time to recharge the battery. You can not go by the idiot lights as they will read full when charging or on shore power. This should have been covered by your dealer during PDI, but if he is telling you that the furnace is not designed to run on battery, there may be a bigger problem. It Only runs on 12V and with sufficient battery capacity it will run fine.
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