Originally Posted by bandtroberts
?....... He believes this additive is causing the coolant to evaporate in the unit itself and has caused many, many problems. FWIW. He's saying mine will be replaced without issue.
From the perspective of Physics 101, this is not possible. These systems are closed and sealed systems, and the material used in the cooling processes changes from a liquid to a gas as the transfer of heat is achieved. Many folks think that an "air conditioner" cools. It does not. What it does is absorb heat (inside), and move it to a different place.(outside).
I also understand that the sealed units are aluminum, which has always been difficult to "solder" like copper which is very easy to solder. I've been told that there was a failure in the process of connecting the component parts which resulted in a leak and resulting loss of freon.
When my unit failed to work, it was initially difficult to troubleshoot because the blower system ran fine. The compressor easily kicked on, and sounded perfectly normal. But the temperature never changed. When I climbed up top with my IR thermometer, I could tell there was no heat being moved anywhere because the temp on both sides of the condensor coil was unchanged. There was also no change in temp on both sides of the evaporator coil. Total loss of freon. Even if the compressor had a leaking check valve, there would be a small movement of freon, and the resulting movement of heat.
Dometic definitely sustained a failure in the manufacturing process. I sure hope its resolved.
We havent camped since the AC was replaced, because of a new grandbaby....but we have a trip planned in Sept. I probably should go turn it on and let it run some now, while its so stinkin HOT!