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Old 04-19-2011, 09:51 AM   #15
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Originally Posted by Gosman View Post
I have a 1972 Argosy with I believe has the orginal Dometicometic refrigerator and the inside looks as posted by T.G. Twinkie .
Now I did notice in the fuse box there were a few fuses missing and I have replaced them . I have the Argosy pluged in to a land line and have set the control knob to Electric and shut off the side for propane . Still nothing ? before removing the refrigerator should I replace the heating element??? and if so were can one be purchased ?.
Also not know much about Airstreams do I have to remove the refrigerator to replace the heating element . Also is there any thing elese I can do before the purchase. I am stumped and can use any help out their.
Thanks George
Have you attempted to run it on propane? If so, did it cool? If it cools on propane and not electric, it might be as simple/cheap as the electric heating element. If it doesn't cool on propane either (but the flame burns) then it's a more involved problem that might require "burping" the ammonia heat exchanger or might require a new heat exchanger, which people on the forums have indicated costs about half the price of a new fridge.
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Old 04-19-2011, 01:10 PM   #16
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There are two temperature setting knobs (thermostats); one for electric and one for gas. Did you set the electric knob to at least five? Your heating element could be bad; it is easy to replace.
In the center photo I posted; just above my hand there are wires inside a rust colored sheath. The original element had ceramic beads over the wires to protect them from the heat. These go to the heating element which is behind the metal shield that covers the burner, the one with the name plate on it in the photo. Some fiberglass insulation is covering the pipe (or well) where the element is located. Just follow the wires and you will find the element.
But before you go to the trouble of removing the shield, check to make sure you have 120 volt AC power to the heating element terminals, which are just above where my hand is in the center picture; just follow the wires, they are connected with stab on connectors.. Set the electric thermostat all the way to max, make sure the refer is plugged into the outlet and make sure the outlet has power.
If you have power to the heating element terminals. Check the piping that comes out above the shield previously mentioned. If it is not warm to the touch, the heating element is bad. It is only 150 watts, so give it a couple of hours with confirmed power on before you check the piping.
This refer does not use 12 volt power; it only runs in the electric or gas mode. You need 120 volt AC power for it to work in the electric mode.
My refer was out when I replaced the element, the PO said it didn't work and had removed it, I threw it in my truck and brought it home with the trailer. Turns out that all that was wrong with it was the heating element was bad and it was missing the thermo couple for the gas mode. I installed a new element and a thermocouple. It has been working fine.
I think you can get to the element without removing the refer, but I'm not absolutely sure. If you can get the shield off you can replace it in place.
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Old 04-22-2011, 10:25 AM   #17
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Dometic Diagnostic Manual

This might be helpful; also there's good folks at RvIceBox.com - Dometic and Norcold RV Refrigeration repair for info about refurbishing.

I like about the old RM100 that it runs on 12V or 120V or LP although you have to wonder when it's going to quit, after 28 years!
Attached Files
File Type: pdf Dometic RV Fridge Mandiag.pdf (2.25 MB, 85 views)
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Old 04-22-2011, 07:38 PM   #18
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Mine is 34 years old and still going (knocking on wood with one hand while typing with the other)
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Old 04-27-2011, 01:21 PM   #19
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I would like to know where you can get a replacement for a RM100 for $1095.00 ($1/day X 3 years). The last one I priced was nearly $2800 and that did not include installation. On the other hand, I just fixed a '74 model RM100 for $39.00 and it works fine. All it needed was a new electric heater element. $39 vs $2800....I can live with old.
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Old 04-27-2011, 01:37 PM   #20
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I have a new RM2820 on a pallet with factory wrap still on it FOB my shop at less than $1 X 365 X 3. One must know where to shop.
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Old 04-28-2011, 07:16 AM   #21
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splitrock....feel free to share your source. We all like to save money.
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Old 04-28-2011, 09:37 AM   #22
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I bought water heater, furnace, and refrigerator from Palomino RV. Several posters here referred me there and they are great!

Palomino Parts: 1047 E M86 - Colon, MI 49040 - 800 297 5830 or (269)432-3271, Jevin in parts
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