Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Just Conversation
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 08-06-2014, 01:47 PM   #1
Senior Member
beamisl's Avatar
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Jul 2014
Location: MI
Posts: 2,582
How do the refrigerators work?

I understand that MH fridges are ran on both electric and propane, but do they run on electric battery going down the road or on propane?

I know you use propane during boon-docking but can you use battery backup if need be?

The multiple batteries I see on coaches? What are they for?

No, I do not have my coach yet just trying to learn what I can before hand. I have a lot to learn and thought this place was a good place to get that education.

Thank you ahead for any info on the above subjects you care to share.


beamisl is online now   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-06-2014, 01:56 PM   #2
Senior Member
Dr4Film's Avatar

Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 7,540

Read the following web sites thoroughly and bookmark them for the future.

RV Electric

The 12volt Side of Life (Part 1)

The 12volt Side of Life Part 2

HowStuffWorks "Gas and Propane Refrigerators"

That should keep you busy for awhile.

Dr4Film ----- Richard

2002 Monaco Windsor PBT 40Ft. (R HOME) - 30Ft. 2006 Pace Trailer (R JUNK). Trailer Has 06 VUE (R TOWD) 04 Victory Alen Ness Edition (R RYDE). Full-Timer for 14 Yr's BUT now a Part-Timer. Cummins ISC-350 With Banks Power Pack and Upgraded PRXB PacBrake.
Winter Home in Flagler Beach FL - Now Staying in Dansville NY for the Summer.
Dr4Film is online now   Reply With Quote
Old 08-06-2014, 03:20 PM   #3
Senior Member
PyrateSilly's Avatar
Monaco Owners Club
Join Date: Jul 2011
Posts: 2,200
We turn off the propane right before taking off down the road. When we had an RV absorption fridge we ran it on electric going down the road. Most will leave the propane on and run it on the propane.

It is up to you and up to what the rules are for where you are at. By that I mean there are some roads, tunnels, bridges, etc that want you to turn off your propane. Since we do not want to try to remember where all the little tunnels, bridges and neighborhoods are that make it illegal to have it on we just turn it off. That is us and that is how we do it for us. It is up to you how you want to run it.
Thom and Christine having fun in a 1993 Monaco Crown Royale Signature Series 40ft 300hp RV. Towing a Fiat 500 Abarth and a Harley.
Our blogged repairs and travels
PyrateSilly is offline   Reply With Quote
Old 08-06-2014, 06:49 PM   #4
Senior Member
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,332
Briefly, consider propane, 110v, and if present, 12v as energy sources capable of providing enough heat to cycle an ingenious but simple heat pump.

Propane heats it directly with a small thermostatically controlled flame, while 110 and 12v provide heat via heating elements, again controlled by thermostats.
1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
ahicks is offline   Reply With Quote
Old 08-06-2014, 07:20 PM   #5
Senior Member
BFlinn181's Avatar

Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 12,621
Except in Class B RV's, most RV absorption refrigerators are called 2-way. They are the most common. They have a 12 v controller that operates the temperature control and interior light. It uses 120v AC for heat or when that's not available, it uses LP gas for heat. In Class B RV's, often the refrigerator also has the option to operate a 12 v DC heating element. They're called 3-way refrigerators. The 12 v heat option is very draining on a battery, they are often switched to only operate on that option when the engine (and alternator) are running. 3-way refrigerators are often smaller, sort of like an under-counter model in a home.

The multiple batteries are to extend the amount of power without being plugged in or running the generator. There are two battery systems, one for the engine, called the chassis battery, and the other system often is multiple batteries for the house systems.

The two battery systems are separate from each other, running down the house batteries still allows you to start and operate the engine. Often the two battery systems can be interconnected by use of a 'boost' switch on the dashboard that allows one to 'jump start' the other. It's only a momentary contact switch. In addition, most RV's allow both battery systems to charge whenever charging is available, either the engine alternator, the generator, or 120 v shore power when plugged in

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Old 08-08-2014, 10:16 AM   #6
Senior Member
NorthernDriv's Avatar
Join Date: Mar 2014
Location: Mission,B.C.
Posts: 231
WHAT.....these refrigerators are suppose to work!!!
HR Endeavor DST Bath and 1/2
330 HP Allison 6-Speed - 7.5 mpg US
Me and the DW
NorthernDriv is offline   Reply With Quote
Old 08-08-2014, 02:24 PM   #7
Senior Member
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 21,173
In days of old they made 3-way (12 volt DC, 120 Volt AC and Propane) fridges.. But the 12 volt heat element sucked way too much battery power so they dropped it.

Modern ones are Gas/120 volt AC only, but also use 12 volt (Sip it) for control power.
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 08-08-2014, 02:54 PM   #8
Senior Member

Join Date: Aug 2011
Posts: 2,586
Originally Posted by beamisl View Post
The multiple batteries I see on coaches? What are they for?

The newer trend is to put residential refrigerators into RV's. These are the same as in your house. The benefits are the coach doesn't have to be level for them to work, they are larger, hold more food, cool better, and don't have potentially flammable hydrogen posing a fire risk.
Going down the road they can run on generator power, or powered by the batteries and inverter.

When you get to the campground, they run on shorepower (normal 120vac provided by the power pedestal). Boondocking they run on the generator, and/or batteries and inverter. Having more batteries allows the fridge to run longer before recharging the batteries is necessary. Solar power is a popular option for boondockers, this allows the batteries to recharge for free as long as there is plenty of sunshine.
pasdad1 is online now   Reply With Quote
Old 08-08-2014, 03:04 PM   #9
Senior Member
brobox's Avatar

Entegra Owners Club
Join Date: Apr 2007
Location: SW FL
Posts: 10,775
It is going to depend on the coach you get. Most do not run on battery power going down the road if the are 120 and LP gas. Our previous coach ran on LP while traveling but would automatically switch over to 120v if the generator was started then back to LP if the generator was shut off.

Our new coach has a residential refrigerator with 8 batteries instead of the normal 4. It will run on battery power going down the road and switch to 120v if the generator is started. The high output alternator will keep all 8 batteries charged allowing the refrigerator to run off of battery power through the inverter.
Chuck in SW FL
A "Classic" 2014 Entegra Anthem 42RBQ
2016 Colorado Z71 PU
brobox is offline   Reply With Quote
Old 08-09-2014, 06:50 AM   #10
Senior Member
beamisl's Avatar
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Jul 2014
Location: MI
Posts: 2,582
Thanks everyone. Good sites Dr4Film, good reading for my education into this. Did a lot of camping and pop-up when being raised and look forward to full timing. Just 3 years away and meanwhile I can get a lot of information onboard so I have a good base for this.

Happy camping!

beamisl is online now   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bounder: Question regarding my Bounder which is in for warranty work Bruadair Fleetwood Products Owner's Forum 101 08-25-2014 08:18 AM
Hanging different art work and etc. DoggieDaddy Entegra Owner's Forum 15 06-11-2014 03:50 PM
1998 Sea Breeze Porch, Compartment and Ceiling light switches do not work Metalmatt National RV Owner's Forum 0 05-23-2014 07:54 PM
Porch light, Compartment Lights, and ceiling switches do not work Metalmatt National RV Owner's Forum 2 05-23-2014 04:13 AM
2 rear Girard window awnings wont work SSRice Monaco Owner's Forum 1 03-13-2014 03:09 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:25 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.