Reply
 
Thread Tools Display Modes
Old 04-21-2014, 09:17 PM   #1
Junior Member
 
Join Date: Jun 2013
Posts: 16
Test Fridge Running Off Battery?

Hello everyone,

I am having an issue with my fridge running off my truck. Every time I run the fridge off the truck it thaws out and I end up with a lot of ruined food. This happened twice to me. The first time I thought I did something wrong, the second time I knew something else is wrong.

My question is how can I test this? Can I hook a charger to the battery and let the fridge run on 12v or will I damage something having the charger hooked up while running it? Is there anything specific I should be looking for?

It runs on 120v and propane without issue. But doesn't the 120v run through 12v converter?

I tested the truck power and it is fine there so I need to test the fridge itself somehow before I take it in for warranty.

Thanks for all your help
__________________

__________________
Steve A is offline   Reply With Quote
Old 04-21-2014, 09:18 PM   #2
Senior Member
 
Todouble's Avatar
 
Join Date: Nov 2013
Posts: 849
Mine runs on 120v shore power or while traveling down the road it runs on propane. Most are setup this way. Very few run on 12v dc
__________________

__________________
Todouble is offline   Reply With Quote
Old 04-21-2014, 09:22 PM   #3
Junior Member
 
Join Date: Jun 2013
Posts: 16
Quote:
Originally Posted by Todouble View Post
Mine runs on 120v shore power or while traveling down the road it runs on propane. Most are setup this way. Very few run on 12v dc
I can also run it on propane while traveling but I would prefer to use the 12v system and being that the camper is only a few months old I can take it in for warranty repair but I want to make sure I covered all my bases before taking it in. Just in case I am overlooking something.
__________________
Steve A is offline   Reply With Quote
Old 04-21-2014, 09:25 PM   #4
Senior Member
 
Todouble's Avatar
 
Join Date: Nov 2013
Posts: 849
Test Fridge Running Off Battery?

What's the model of fridge? I don't think you have the 12v option. It uses 12v to light the flame and power the fridge but uses propane for the heat source to transfer the refrigerant around. Usually the 12v option to run the fridge is on motor homes with lots of batteries
__________________
Todouble is offline   Reply With Quote
Old 04-21-2014, 09:30 PM   #5
Junior Member
 
Join Date: Jun 2013
Posts: 16
Quote:
Originally Posted by Todouble View Post
What's the model of fridge? I don't think you have the 12v option. It uses 12v to light the flame and power the fridge but uses propane for the heat source to transfer the refrigerant around. Usually the 12v option to run the fridge is on motor homes with lots of batteries
It has the 12v for traveling.

So for the sake of the thread lets just say I do have a 12v system, what steps would I need to take to test it?
__________________
Steve A is offline   Reply With Quote
Old 04-21-2014, 09:37 PM   #6
Senior Member
 
Todouble's Avatar
 
Join Date: Nov 2013
Posts: 849
Test Fridge Running Off Battery?

Quote:
Originally Posted by Steve A View Post
It has the 12v for traveling.



So for the sake of the thread lets just say I do have a 12v system, what steps would I need to take to test it?

We all have a 12v for traveling but it's only uses the 12v to power the controls of the fridge. You must heat the ammonia refrigerant that's in it to work. Thus only being accomplished by a propane pilot flame or 120v shore power. The demand on a 12v batter as the heating element would drain it pretty darn fast. What's your model of the fridge or camper so I can give you a definite answer. But everything your describing tells me you don't have a 12v dc as a heating element. Only fridge controls
__________________
Todouble is offline   Reply With Quote
Old 04-21-2014, 09:41 PM   #7
Senior Member
 
Todouble's Avatar
 
Join Date: Nov 2013
Posts: 849
Does the top if your fridge have an on/off button and then another button next to it that says auto/ gas??
__________________
Todouble is offline   Reply With Quote
Old 04-21-2014, 09:50 PM   #8
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
Dometic RV fridges require 12 volts to work the electronics, BUT you need a way to heat the ammonia too. This is accomplished two ways: propane OR a 120 volt AC heater.

When running on truck 12 volt DC you MUST have the propane on.
If the propane is turned off at the bottle; no workie...

You need 12 volt DC when running on shore power too. That is provided by the converter.

I always run in AUTO with the "GAS" button OFF. This way the fridge will cool with 120 volts (if available) and "auto" switch to DC and GAS if the shore power fails or you are disconnected and towing. ALWAYS leave the AUTO button on as it is really an ON/OFF button.

The GAS button is only used when you have shore power BUT the voltage is low (say) and you want it to run on gas ANYWAY even though shore power is available.
Attached Thumbnails
Click image for larger version

Name:	913th 3rd Annual Picnic and Camper photos 033.jpg
Views:	76
Size:	45.0 KB
ID:	50643   Click image for larger version

Name:	Circuit diagram.jpg
Views:	69
Size:	82.1 KB
ID:	50644  
Attached Files
File Type: pdf DM 2652operation.pdf (193.7 KB, 18 views)
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-21-2014, 09:59 PM   #9
Senior Member
 
Join Date: Feb 2012
Posts: 1,101
I'm going to guess that steve has a popup as some of those have 3 way fridges. You have the switches on the outside the switch between gas, 120 and 12V. The 12V is only used while traveling so you are using the power from the TV. You could run the system from an external 12v source, ie battery charger. After 15 or 20 min you should feel the vent tube in the fridge compatment heat up. If it does not heat up you need to find the two wires going to the 12V heater and do a resistance measurment on it. If you get a high resistance than the heater is no good. If the resistance is low than you may have a bad switch.
__________________
Ontario

Vibe 6501
1 Prospector Canoe
2 Mtn. Bikes
4 Hiking Boots
Happy Vibe is offline   Reply With Quote
Old 04-21-2014, 10:05 PM   #10
Junior Member
 
Join Date: Jun 2013
Posts: 16
Quote:
Originally Posted by Happy Vibe View Post
I'm going to guess that steve has a popup as some of those have 3 way fridges. You have the switches on the outside the switch between gas, 120 and 12V. The 12V is only used while traveling so you are using the power from the TV. You could run the system from an external 12v source, ie battery charger. After 15 or 20 min you should feel the vent tube in the fridge compatment heat up. If it does not heat up you need to find the two wires going to the 12V heater and do a resistance measurment on it. If you get a high resistance than the heater is no good. If the resistance is low than you may have a bad switch.
Great, thank you Happy Vibe. I will be pulling it out of storage this week so I will have more information on the fridge then but I just wanted to make sure that I wouldn't damage anything by having a battery charger connected while running the fridge. I know it should be the same as having the truck hooked up to it but I rather be safe than sorry. And I rather not take it in for warranty work if it is a easy fix.
__________________

__________________
Steve A is offline   Reply With Quote
Reply

Tags
battery, fridge

Thread Tools
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



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:34 PM.