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Old 04-04-2011, 11:56 PM   #1
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What is that thing under the sofa?

Okay, I am brand new to owning a trailer of any kind let alone a Jayco and own a Jay Flight 264BH. Here's my question...I had the trailer plugged in to a standard 110 household outlet and came into it tonight and heard something running, like a fan, but it was coming from under the J-steel sofa in the trailer. My problem is that I know they told me what was under there during the walkthrough but I can't, for the life of me, remember what I was told it was. The trailer has only been plugged in but no water added to it and no furnace turned on or anything. Does anyone know what is in the mystery box under that sofa? It has a grate on it and sounded like a fan running. There is nothing directly outside the area that might suggest what it is so now I'm counting on all of you veterans who might be able to shed some light on this mystery. Your guesses?
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Old 04-05-2011, 12:34 AM   #2
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That would be the furnace under the sofa. Don't know why it would be running if you had the furnace off, though.

Have a good one,

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Old 04-05-2011, 05:08 AM   #3
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If there is nothing directly outside of it, it won't be you furnace. It is more likely your power inverter. They have a cooling fan in them that will run when you plug the trailer in to shore power.
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Old 04-05-2011, 05:18 AM   #4
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I'm going to guess that it's the cooling fan on the 12v converter. They're equipped with a small fan to prevent them from overheating. My 12v converter has a variable speed fan that runs continuously from the minute I plug the rig into shore power. As the load increases (like turning on some lights, furnace blower coming on, or anything that requires 12v power to operate), the increased demand for 12v power causes my converter's cooling fan to speed up so the converter doesn't overheat.
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Old 04-05-2011, 03:08 PM   #5
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Prizes to both FPM III and hammer for guessing the power inverter. I spoke with the dealer today and they said that it was the fan on the inverter that was making the noise and that's completely normal...I was told that you don't hear it very often but it will come on from time to time. So that solves another "new trailer" mystery for me. And here I ran outside and unplugged the trailer because I was afraid that something was running when it wasn't supposed to be. Go figure!
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Old 04-05-2011, 03:32 PM   #6
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Prizes to both FPM III and hammer for guessing the power inverter. I spoke with the dealer today and they said that it was the fan on the inverter that was making the noise and that's completely normal...I was told that you don't hear it very often but it will come on from time to time. So that solves another "new trailer" mystery for me. And here I ran outside and unplugged the trailer because I was afraid that something was running when it wasn't supposed to be. Go figure!
Converter. Jayco's do not come with inverters. Converters convert 115 volts to 12 volts. Inverters do the opposite.

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Old 04-05-2011, 03:42 PM   #7
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"What is that thing under the sofa" The boogey man?
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Old 04-05-2011, 09:41 PM   #8
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I missed that one, huh. Well, the boogey man under MY sofa IS the furnace! LOL. My power converter is under the refrigerator.
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Old 04-06-2011, 04:00 PM   #9
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Quote:
Originally Posted by newrvguy68 View Post
Okay, I am brand new to owning a trailer of any kind let alone a Jayco and own a Jay Flight 264BH. Here's my question...I had the trailer plugged in to a standard 110 household outlet and came into it tonight and heard something running, like a fan, but it was coming from under the J-steel sofa in the trailer. My problem is that I know they told me what was under there during the walkthrough but I can't, for the life of me, remember what I was told it was. The trailer has only been plugged in but no water added to it and no furnace turned on or anything. Does anyone know what is in the mystery box under that sofa? It has a grate on it and sounded like a fan running. There is nothing directly outside the area that might suggest what it is so now I'm counting on all of you veterans who might be able to shed some light on this mystery. Your guesses?
I know several of you said it was the Converter - but on a 26BH the converter is located under the fridge. The furnace is located under the sofa.

Is there air coming out of the floor vents? The furnace is fairly loud and very noticeable. I am not sure I have ever heard the fan on my converter since it is behind the cabinet. It is possible the sound is bouncing off of something and only sounds like it is coming from under there??

You should be able to remove the drawer from under the fridge and you will see the converter and possibly hear it.
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Old 04-09-2011, 03:17 PM   #10
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If it is the furnace fan, make sure your thermostat control is actually turned off. The switch in our first trailer required qute a bit of thumb to turn it off. At first I didn't realize there was an off position, just the lowest setting. I learned that when the fan kept coming on if it was cool out even when I didn't want to run the furnace. Just a thought.
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