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Old 06-27-2016, 09:56 PM   #1
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RMD8555 12v not working

We just returned from our first trip since we had the new fridge installed last fall. We normally don't use 12v, but we sometimes do when towing. When we had the fridge installed I tested it on 120v and on propane, but for whatever reason never tested it on 12v. Of course, that's what doesn't work...

Looking at the back of the fridge, it looks like the shop that did the installation simply didn't hook up the 12v to the heating element connection. There's a terminal block that's clearly labeled with spots for 12v control board, and 12v heating element. The wires coming in are hooked up to the control board terminals, but not to the heating element terminals.

Has anybody got a copy of the service manual for the RMD8555? Or maybe a picture of the back on their installation?

If it's as simple as hooking up the extra wires, it's probably easier for me to do it myself than to take the trailer back to the original shop...

Thanks.
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Old 06-27-2016, 10:08 PM   #2
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Quote:
Originally Posted by dbailey View Post
If it's as simple as hooking up the extra wires, it's probably easier for me to do it myself than to take the trailer back to the original shop.
I agree Doug, but if I had the time, I'd make THEM fix it. It's the principle of the thing.

Here's a link to the appropriate section in the installation manual:

http://www.manualslib.com/manual/108...page=19#manual
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Old 06-27-2016, 10:26 PM   #3
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Based upon past posts it was clear we have never been able to find anyone with an installation manual of any sort for this unit. There was some hope on an Australian forum that we may have found it but it was very different. Any of us who received the warranty unit did not receive anything but an operations manual in the packaging.

The best hope is someone can give your a photo of their installation. I would be happy to, though I do not know if the unit works on 12 volt.

A photo from your side may assist in you getting the exact area you want.
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Old 06-27-2016, 10:34 PM   #4
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Here is a photo.

Cheers
Doug
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Old 06-27-2016, 10:59 PM   #5
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Thanks, Doug. That shows what I thought should be the case -- the input wires are connected to both top (heating element) and bottom (control panel) terminals. On mine, they are only connected to the control panel terminals.

What's the black block between the red wires connecting top to bottom? Is that an extra inline fuse or something? I'm not sure why a fuse would be necessary, but can't think what else it might be...
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Old 06-27-2016, 11:08 PM   #6
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Quote:
Originally Posted by dbailey View Post
Thanks, Doug. That shows what I thought should be the case -- the input wires are connected to both top (heating element) and bottom (control panel) terminals. On mine, they are only connected to the control panel terminals.

What's the black block between the red wires connecting top to bottom? Is that an extra inline fuse or something? I'm not sure why a fuse would be necessary, but can't think what else it might be...


You mean this one, yes it's a fuse.
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Old 06-27-2016, 11:10 PM   #7
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RMD-8555 install manual

If I can figure out how to attach docs, here's the install manual pdf.
I too have been having fun with my dometic, everything works but Im trying to get the thing to work like the manual says it will. (auto sense solar and switch to it when available).
I see at the bottom of the reply page here that i can "add video" hope it means file. Here goes:
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Old 06-27-2016, 11:50 PM   #8
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rmd install manual upload attempt 2

Well that didn't work. checked the "how to faq" IE read the instructions. Heres the second attempt. File too large at 1MB and when i print and scan on my home machine the size is still too large.
Went back and looked at the link Rbryan4 sent and its what I have. So there ya go.

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Old 06-28-2016, 01:12 AM   #9
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Tinkerers and AES link

Hi Doug,

We spent a bit of time fooling the AES and watching it search. You might find some info to help understand here:

6.7 Frig Tinkering ideas?

The DC 'big wires' on your frig may not have been hooked up when you took it in for the swap? Many of us run with the DC disconnected so the frig can't 'get there' unexpectedly and draw down the battery. The AES was supposed to be a great idea .. but I find it's tricking me at times and confusing the issue.

I run normally with the fuse removed from the big red supply. IF I want DC to operate I reinstall the fuse and watch the AES pickup the DC.
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Old 06-28-2016, 05:32 PM   #10
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Quote:
Originally Posted by PGDriver View Post
You mean this one, yes it's a fuse.
How many amps is that fuse? I guess the circuit has a large (20A?) fuse on it, and this one is intended to limit the power available to the control board to a more reasonable level.

On my fridge, the power is fed to the control board without a fuse, so could potentially get the full 20A.
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