Originally Posted by gauto5150
I've seen this mentioned before and have seen it as well on coaches on EBAY that were being sold as "repairables".
My question is:
Is this something that is caused by an engineering flaw or an outside source causing combustion? Perhaps an animal nest or insect nest of some sort?
Gauto, Most fires that have caused damage to either motorhomes or travel trailers have been caused by poorly designed RV refrigerators. The refrigerators causing these fires were either Dometic or Norcold brands. In the last 10 to 15 years the cooling unit systems on these refrigerators have suffered in quality and so in the process the materials used to build the cooling units has also suffered in quality. As for the Norcold refers, the tubing used to build the cooling unit has diminished in wall thickness and created failures due to the tubing cracking and releasing hydrogen/ammonia gases which when exposed to any high temperature heat or flame can cause a fire. Some people like myself have decided to remove the factory cooling unit and install a better quality one such as the RV Cooling Unit Warehouse
. These cooling units are built using a 50% thicker wall tubing and are not subject to all the problems associated with the factory built units. Just for the safety factor alone I changed the cooling unit in my Norcold 1201 to one of the Amish Built Units. You can see the work involved in this video I made while doing the installation.
Hope This Helps,
Norcold 1200 to Amish Cooling Unit Conversion.mpg - YouTube