Dometic refrigerator at higher altitudes

hshea wrote:
We purchased a new Keystone TT last year at the RV show here in Denver to replace our 10 yr old Forest River that never had an issue in its life. Now Denver is at 5280 feet and we camp in Colorado at National Forest campgrounds that usually do not have hook ups are all above 5280 ft. The Dometic fridge hardly works on propane it tries to ignite and fails to ignite 99% of the time, we have been to 5 dealers and spent nearly $800 of our own money and it still doesn't work. Now Dometic is telling us that their new fridges will not work above 5,000 feet. Why are dealers in Denver selling a TT with a fridge that only works at sea level? We are so frustrated and sad we sold our old Forest River - needless to say Keystone doesn't give a darn and Dometic say there are no fixes for altitude so we have a $30k travel trailer and have to use a cooler? Has anyone else had this issue and found a work around?

The three Fridge's I have been dealing with are suffering from "flame lift" at start up durring coldish weather. During start up the flame lifts off of the burner. The lift off lasts for about a minute(ish) The problem is the igniter is also the flame sensor. When the flame lift's off there is no path to ground. The unit believes that there is no burn and shut's the propane off. To get around this issue I install a copper ground probe from the burner parallel with the igniter, this allow's the sensor to "see" the lifted flame untell it settle's down. This mod worked well at 9100 feet on all three units. (The regulator's were adjusted to 11 water column's prior to the mod)