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Old 06-23-2016, 01:04 PM   #1
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We are going to pick up our new 21SS in a few days. Taking our old, seldom used, 29' Toy Box in for a trade in.

Dealer wants the refrigerator running when we bring it in. My plan was to start the fridge up at home using propane with fridge set to Auto). Then leaving propane on during the trip to the dealer. Have not pulled er in a few years and cant remember if that's the proper procedure. Figure with it on Auto, it'll switch over to tow vehicle electrical during transport. Went thru manual that came with the fridge and didn't find answer. Appreciate the help

Really looking forward to the new Roo.
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Old 06-23-2016, 01:22 PM   #2
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We are going to pick up our new 21SS in a few days. Taking our old, seldom used, 29' Toy Box in for a trade in.

Dealer wants the refrigerator running when we bring it in. My plan was to start the fridge up at home using propane with fridge set to Auto). Then leaving propane on during the trip to the dealer. Have not pulled er in a few years and cant remember if that's the proper procedure. Figure with it on Auto, it'll switch over to tow vehicle electrical during transport. Went thru manual that came with the fridge and didn't find answer. Appreciate the help

Really looking forward to the new Roo.
Assuming it is a 2 way fridge, it either runs off of 110(120) or LP. When in auto it will try to detect 110, if not available it will attempt to light LP.

TV power will not "power" your fridge, it will still require LP to run. If you leave LP on and in auto it will still draw LP and run on LP while enroute to the dealer.
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Old 06-23-2016, 01:23 PM   #3
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Plug trailer into electric at home. Put refrigerator on auto. Turn on gas and leave it on as you travel. Electric cools the refrigerator much faster then propane. Give yourself several hours.

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Old 06-23-2016, 01:48 PM   #4
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If you haven't used the fridge for a couple of years, even a season, I'd try the fridge in the LP mode first while at home. This so you know it works on LP while traveling and you don't have a spider in the tubing keeping it from cooling.
Before I pull out of the driveway, I always check to make sure the LP works on the fridge. Just a little insurance so I don't get to my destination and find items melted in the freezer.
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Old 06-23-2016, 02:10 PM   #5
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...Electric cools the refrigerator much faster then propane. Give yourself several hours.
My experience is just the opposite. Ours cools much faster on propane.
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Old 06-23-2016, 02:17 PM   #6
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I leave our fridge on Propane on hot days. Cools much better.
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Old 06-23-2016, 02:30 PM   #7
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Some RV refrigerators are 3 way.
12v - 110v AC - LP Gas

The more common is 2 way with an AUTO button that works off 110v AC or LP Gas.

Not knowing what yours is, I'd first try it on propane to see if it lights correctly.
Once determined it lights (and stays lit) on LP, I would try either of the other sources to be sure it will cool. The dealer is just wanting to to be sure it is a working unit.
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Old 06-23-2016, 02:31 PM   #8
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My experience is just the opposite. Ours cools much faster on propane.
Same for me.
In 40+ years of camping, all my absorption refrigerators worked better and cooled faster on LP.
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Old 06-23-2016, 03:02 PM   #9
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Many thanks. Don't know what I was thinking with 12v TV able to power fridge. Duh. Appreciate all the quick feedbacks
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Old 06-23-2016, 03:13 PM   #10
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Many thanks. Don't know what I was thinking with 12v TV able to power fridge. Duh. Appreciate all the quick feedbacks
As I said... SOME RV refrigerators ARE able to operate off of just 12v.
They have a 12v heating element that works similar to the 110v element.
Not a 'duh' moment at all.
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Old 06-23-2016, 04:30 PM   #11
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Right u are 5picker. Looking at ours it's either propane or 120v. Think our son's will also do 12v. Thanks again
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Old 06-23-2016, 04:33 PM   #12
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Fridges with 12Volt power are usually just the small (2-3 cu ft) that come in popups.
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Old 06-24-2016, 12:35 PM   #13
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Frig On While Driving

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Originally Posted by Guzzi View Post
We are going to pick up our new 21SS in a few days. Taking our old, seldom used, 29' Toy Box in for a trade in.

Dealer wants the refrigerator running when we bring it in. My plan was to start the fridge up at home using propane with fridge set to Auto). Then leaving propane on during the trip to the dealer. Have not pulled er in a few years and cant remember if that's the proper procedure. Figure with it on Auto, it'll switch over to tow vehicle electrical during transport. Went thru manual that came with the fridge and didn't find answer. Appreciate the help

Really looking forward to the new Roo.
Hope trip to dealer is not too long. It's risky to travel with the propane value open.
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Old 06-24-2016, 12:39 PM   #14
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put some frozen milk containers in it
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Old 06-24-2016, 12:58 PM   #15
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Many thanks. Don't know what I was thinking with 12v TV able to power fridge. Duh. Appreciate all the quick feedbacks
You know the RV battery has to be charged for the fridge to work, right?
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Old 06-24-2016, 01:19 PM   #16
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Frige On Gas

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You know the RV battery has to be charged for the fridge to work, right?
Yes, I think the frig needs 12 volts to operate the gas flame control.
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Old 06-24-2016, 01:57 PM   #17
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Yes, I think the frig needs 12 volts to operate the gas flame control.
But I don't think you can use the 12 volts from the tow vehicle as the OP suggested he had planned.
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Old 06-24-2016, 02:22 PM   #18
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Old 06-24-2016, 02:24 PM   #19
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But I don't think you can use the 12 volts from the tow vehicle as the OP suggested he had planned.
Doesn't the 12 volts come from the TT?
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Old 06-24-2016, 02:26 PM   #20
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Was just reading this post to pass the time...Wow, didn't know any of this stuff.. Thanks to all of you..
Used our NEW Road Yacht only twice, and already discovered the dealer we bought it from in Picayune, Ms. will not take responsibility for anything, not even tightening the ball on the receiver hitch they sold me !!!!!!!!!!!
Yep, there is a learning curve to this camping stuff..


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