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Old 09-13-2014, 02:30 PM   #15
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Originally Posted by SSquared View Post
Our fridge also draws nearly an amp when running on propane.

We have a 2013 25FB. The documentation for the fridge shows that there is a small heating element that runs on 12V. It's not for the cooling system, it is for fighting condensation. I think this heater is near the door, but I am not sure.
This heater draws about 1/2 an amp.

The manual implies it runs as needed, but I think it runs pretty much all the time.

We have identified the wire that runs to this heater. We intend to insert a switch in this wire, and only turn it on if we experience a condensation problem.

By the way, we have a clamp-on meter made by Klein. I think we paid around $90. You can get clamp-on models for less, but the cheap ones don't measure DC current, only AC.
Any chance you could snap a pic or explain the location of this wire please? I have a Dometic RM2820, the manual says it has a switch under the eyebrow control panel, but it does not.

I contacted Dometic and was told that some had a switch and others did not, but of course was not allowed to tell me how to disconnect the element. I have switched to a Dinosaur board on a previous Dometic I had so I am a little familar.

I thought this would have been a hot topic on this forum due to the battery drain, but i searched and could not find much. It appears most people have the switch and just did not know it was there.

Thanks , Ken
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Old 09-13-2014, 04:12 PM   #16
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The power wire that enables the door heater is generally found on either the control board or if present, the fuse block.

The schematic for same will be in your manual.


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Old 09-13-2014, 11:00 PM   #17
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Picture of heater wire

Quote:
Originally Posted by kmaggard View Post
Any chance you could snap a pic or explain the location of this wire please? I have a Dometic RM2820, the manual says it has a switch under the eyebrow control panel, but it does not.

...snip....

Thanks , Ken
We never got around to cutting this wire. (We got a large solar system this summer, and have had plenty of power--except for last Tuesday when it rained almost the whole day)

Note that my fridge is a different model than yours (RM 3762 here).

The wire is a light blue one, at the left end of a row of wires coming off the bottom edge of the board. In the wide shot, you can see that there is a wiring diagram pasted inside the fridge. The same diagram is in the manual.

The wire goes from P5 on the board to heating wire T.

In the detail photo, the red arrow identifies the wire.
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Old 09-14-2014, 04:49 AM   #18
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The study is much appreciated! Made a copy for my files. Thanks.

Ditto to WaltC! Sorry I missed it the first time around.
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Old 09-14-2014, 11:38 AM   #19
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Thanks for the help to all of you. I am headed out there now to take a look.

Looks like same location on my control board per the wiring diagram.
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Old 09-16-2014, 09:52 PM   #20
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Idroba,

Would you have the name or a link to that computer fan you put in the fridge compartment?
I am home now and got the information:

Cooler Master MegaFlow 200

200 mm fan, 700 rpm, 110 cfm of air flow, 30,000 hour life, 0.16 amp (I measured 0.2 amp)

I got it at Fry's electronics for about $12-15, forget the exact amount.
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Old 09-17-2014, 06:44 AM   #21
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I used a Silenex 120mm, 90cfm, 18dbA, about the same price.


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