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Be SURE your problem is not the defrost cycle. Check the cooling fins during the warm periods and see if they are defrosted. Now, turn OFF the refriderator and wait for about a minute to allow defrost cycle to reset. Next is very important. Turn ON refer and reset temp regardless of its setting...

Your problem is in the defrost cycle. When the 12 volt power is turned off or interrupted the fridge starts a new defrost cycle. It will defrost 60 hours after the cycle started. So, if power comes on at 1:00AM it will began defrosting at 1:00PM the worst time to do so. I start mine at about...

Last season 2010 I tried something a little different. I shut off the water valve to the refrigerator in the basement. and disconnected the water line and left it hanging. I than disconnected the water line at the solenoid and let it drain. I reconnected that line. We continued to use the...

Open the refrigerator door and feel the cooling fins in the back. If frosted the unit is not defrosting. If cool and wet and refrigerator temp is rising it is in a defrost cycle. BE SURE you turn off ALL 12 volt power AFTER you turn off refrigerator. I turned off the battery switch and...

Before you change fans or do anything with your Dometic RM1350 do the following. Determine what time of day you want the unit to defrost. Preferably a night setting.(When turned on the unit will defrost after 60 hours of operation. So, if you pick 3:00 PM it will defrost at 3:00AM two and a...

I too am having cooling problems with my Dometic RM1350 refrigerator in my 2011 Bighorn 3670RL. Seeking help from Dometic is like a brush off from people to busy to care. I don't understand why Heartland still buys their product. Order from the Japanese or Germans and Dometic will get the...

When purchasing our 3670RL it was listed as a 2011 model yet when it comes up on the Owners Club info. it's listed as 2008. What gives?