My friends Norcold had set for a year in a 5th wheel. It was level. When I turned it on I heard a loud gurgleing sound and got no cold anywhere. I went to a shop i trust and asked for help. He told me that if it made a gurgle sound it was hoplessly shot. He didn't ask for the carcass and he didn't have one for sale so i think he was on the up and up. I GUESS that advice pertained to the Norclod alone and not the Dometic.
Glad for your good news......told ya