My Dometic RM2852 only cools when LP (Propane) Gas is turned on. Why won't it cool with AC only?

The noise you bear is the ammonia and hydrogen trying to circulate. Check k the backside of the unit for yellow residue. If this is found then your cooling unit is leaking and must be replaced. If it is gurgling and not cooling it may be clogged. You can try "burping" the unit. To do this you will have to remove the refrigerator from the cabinet. Make sure the gas is turned off and all power is disconnected from the unit prior to removing from the cabinet. Once the unit is out turn it upside down and let set for a few minutes. The turn it right side up. Repeat this process a few times. Then reinstall, right side up. Reconnect power and L.P. lines. Use a soapy water mix to check for gas leaks. Once installed allow the unit to set for a few hours before turning on. This is not a guaranteed fix and if it does work it may not last long... the only sure fix is to replace the cooling unit.

If you fridge is level, and the rear coils of the cooling unit are warm then you more then likely need a replacement cooling unit. If you do, we can help. We are Arcticold Refrigeration. We specialize in the manufacturing of New Replacement Cooling Units for Dometic & Norcold RV Fridges. Our cooling units are direct replacements of the factory units. In most cases the cooling units can be changed in a couple of hours. Arcticold cooling units come standard with new installation hardware, installation instructions, and a lifetime warranty. We also offer 7 day a week free tech support 1-888-782-6665 Our cooling units are available throughout North America. Don't hesitate to give us a call or visit our web site. ArctiCold Refrigeration We keep it cold

Check the thermistor by unplugging it from the main circuit board located at the back of the refrigerator. It will be the harness to the left that has only two wires in it. Unplug it and allow the refrigerator to run for 24 hours. If it does not cool after that then you have a bad cooling unit.

What exactly happens when switched to propane? Have someone switch to propane while you stand by vent cover outside and listen for sparking when switched. Make sure it's calling for cool, as in maybe leave door open for a few minutes prior to trying. Let me know if you hear any "ticking" sound as if trying to light on propane.

Make sure shut off in line with gas valve coming in is in proper position. It looks like a slotted screw (brass) with knurled edge around it for turning by hand. Slot for screwdriver should line up with propane line. If that's not it, get back to me.

this is well woryh a try take the fridge out turn it upside down leave for a few hours then turn it upright put back in LEAVE FOR AT LEAST 8 HOURS TO SETTLE then try it and see what happens hope this may help worked for me on a few occasions regards john

NDR 1062, cools with gas but will not switch over to Ac . If i turn off lp, check light comes on and doesn't cool

There is some reason maybe not explained here. But I will help you if you want. Below is a simple test. The manual I need you to make sure if you have the RM2652 or another model to get the correct manual. That model has digital controls and that is controlled by a control board for switching from AC to DC to Propane. If the board will not switch then we need to look for that problem. Dometic, good refrigerate and great support group. Now here is a link to that model number problem solving PDF. With the manual we can work together to solve this. Thanks, Sea Breeze http://www.dometic.com/FileOrganizer/1-international/Operation%20&%20Installation%20Manuals/Refrigerators%20-%20Caravan%20-%20Motohomes-%20RV/English%20and%20Multilingual/RM2652-RM2852.pdf