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Old 08-06-2010, 01:58 PM   #11
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Posts: 104

My fridge is a RM3962. I just finished installing a new control board. What an ordeal!! The wires going to the board have angled terminals. I found two that were loose and when I tried to crimp them a little tighter they broke. The red wire marked D+ controls the power to the top panel of the fridge and allows it to light etc. If it is so much as a little loose you get and E0 error code(no communication) After getting this fixed; I proceeded to replace the terminal on the green wire that connects on J2. I see that yours is red but mine is green. The wire inside this insulation is one fine strand; about the thickness of a hair. It is enclosed with strands of fabric' probably so it doesn't break off. Getting a new terminal on this fine wire was a major headache. If you crimp it so it makes contact then it breaks off. Finally got this done. The fridge works as before but the interior light still does not come on. I checked the ground and it is ok; the switch checks out fine; the fuses are good; the bulb is not blown; the terminals on the back of the light are connected. I am at a total loss as to what is wrong. The red wire going to the bulb contact has no power to it. I noticed there is a jumper wire from D+ that runs to the gas valve and the other end runs to the back of the fridge.. If this is the power supply to the fridge then it should supply power as the gas burner lights. I even replaced the ends on this wire and checked continuity to make sure the terminals weren't bad.
If your model is RM 3962 then we have the same setup. Have you had the recall done? This is when these jumper wires were run to the D+ terminal on the power board. My board is setup as follows:
Red wire=J1(Bat+); Green wire=J2(Lamp); No wire on J3 ; Red wire on J4(D+Alt); Yellow wire on J5(Flame) Gray wire on J6(Lah)
The dealer placed the jumper on for the recall over two years ago and I never had a problem. It's supposed to cut off the burner in case there is a malfuntion and the fridge leaks gas and sets the thing on fire. (I only wish)
I talked with the dealer I bought the board from and he never heard of anything like this..He didn't think the board controlled the interior light. Any ideas or suggestions would be appreciated as this has me baffled.

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Old 08-06-2010, 06:32 PM   #12
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Join Date: Aug 2008
Location: Enumclaw, WA
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I highly suggest you contact Dinosaur Electronics and ask your questions. The gentleman there is VERY knowledgable on the RV refrigerators as well as other appliances and can and has helped me and others with troubleshooting in the past. I have used his electronic boards to replace the OEM in all my appliances when they go bad. His are superior to those supplied by the manufacturers. Give him a try, he might be more help.

"I can fix it, and if I can't fix it, I can fix it so no one can fix it!"
Ed & Wendy
2009 Georgetown 378TS | 1998 Jeep Wrangler | 1998 Skeeter ZX202C
Nights camped in 2009: 53 | Nights camped in 2010: 55
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Old 08-06-2010, 07:19 PM   #13
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Thanks for the info on Dinosaur site . E-mailed them with synopsis of problem. Hopefully I'll get this solved. I'll let everyone know how this turns out. Thanks everyone for your suggestions.

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