Originally Posted by abdiver
Mine does if I have the refrigerator set to "AUTO" and every time I start my generator for the microwave the Refrigerator switches to electric. If my refrigerator is set to "GAS" it stays on propane and does not switch.
Unless the OP has a High Wall model, the standard height A-frames have small 3 way fridges with the following "features":
- there is no "Auto" or "Automatic" setting. You must individually turn on/off/start the desired mode - 120V AC, 12V DC, or propane. In most of the standard A-frames, the AC and DC on/off switches are behind the upper outside panel, and the propane valves and starter are behind the lower outside panel.
- all modes are continuous run. The fridge runs continuously until the power or propane runs out or is shut off. Temperature regulation is by varying the gas flame with a valve (propane). On AC, newer fridges of this type have a control that functions just like a house light dimmer, changing the power to the AC resistance coil. DC is unregulated on these fridges. As a result, it takes some fiddling over several days to get a constant temp inside the fridge.
- no inside controls. All controls and switches are accessed from the outside vent panels.
Before camping: 12-36 hours prior to departure, trailer is plugged in, fridge set to max on AC. When hooking up to depart, trailer unplugged, fridge switched to DC. Tow vehicle powers fridge (5-6 amps) and keeps batteries at full charge. Propane does not stay lit for me on the road, and there is no auto-restart. At camp, switch to AC or propane depending on power. Set to one number below max cool. After 2 days camping, dial cool back to about 2/3.
Now: 2014 Rockwood A122 A-frame (12ft box)
Then: 2000 Coleman Westlake PUP (12ft box)
Now: camping Colorado and adjacent states one weekend at a time
Then: 10 days at Lake Tahoe each summer plus occasional weekends in California