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Open Roads Forum  >  Fifth-Wheels

 > Dometic refer ?

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boatpuller

longview,wa

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Posted: 07/07/12 04:13pm Link  |  Print  |  Notify Moderator

I have a 2009 bighorn 5er with a dometic refrigerator.It is currently stored without AC power.I tried to start the refrigerator on propane,but nothing.I'm thinking I need the batteries hooked up even to start it on propane? Correct? The batteries are home getting charged.Also,will the batteries draw down very quickly on 12v? Or is the 12 volt part only for ignition then propane takes over?

pianotuna

Regina, SK, Canada

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Posted: 07/07/12 04:17pm Link  |  Print  |  Notify Moderator

Hi,

Yes, you need a source of 12 volt power for the Fridge to operate. The control boards and gas valve work on 12 volt. Power requirement when the gas valve is open is about 1.5 amps. Duty cycle, once the fridge has cooled down is about 2:3. (i.e. burner running for 40 minutes per hour).


Regards, Don
Full Time in a Kustom Koach Class C 28'5", 256 watts Unisolar, 875 amp hours in two battery banks 12 volt batteries, Magnum 3000 watt PSW inverter.

boatpuller

longview,wa

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Posted: 07/07/12 06:52pm Link  |  Print  |  Notify Moderator

Thank's guy's....I just got back from installing the batteries down at the storage. The refrigerator took right off on propane.She doesn't want to stick a bunch of stuff into a warm refrigerator. Hopefully I'll still have enough battery power in the morning to extend the jacks. So,we can hit the road.

Kenc_AL

Wedowee AL

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Posted: 07/07/12 07:26pm Link  |  Print  |  Notify Moderator

If you have good batteries, your jack should work in the morning. Need to check and make sure all lights are off. If your RV has lights in storage bins, make sure they are off.

Also, if jacks won't work, plug into your truck, leave it running 5 minutes or so to put a little charge back in the battery and then your jack should work off power supply from truck.

Allworth

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Posted: 07/07/12 04:39pm Link  |  Print  |  Notify Moderator

Unfortunately, when 12V is turned on to the reefer it is also used by other systems, even though they are "sleeping". LP detector, A/C controller, inverter controller. Carbon Monoxide detector, etc. They will kill your batteries.


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Fulltimers

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Posted: 07/07/12 04:46pm Link  |  Print  |  Notify Moderator

Think of it this way, people boondock all the time on 12V battery power for days, even weeks with no problem. Your refer will run on as low as 10Vdc.


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pianotuna

Regina, SK, Canada

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Posted: 07/07/12 07:43pm Link  |  Print  |  Notify Moderator

Hi,

The Fridge may take between 5 and 14 hours to start cycling. That should easily be within the capabilities of a dual battery RV.

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