Hello everyone, we have a problem, when I open and close the freezer door on our new Coachman Class C motor home it makes a hissing sound for about 10 to 15 sec., then it stops. It is hard to open the door for about another 10 sec.. The real problem is we want to leave in about 24 hrs. for a 3 week vacation, and I have called the dealer, but they have not called me back. It does seem to be cooling and has only been on for 36 hrs. in more than 35 yrs. of RV'ing I have not seen this happen. I'm sure it is a seal problem, but know if it is enough to delay our trip. Does anyone have any ideas? Thanks you for any help you might give us.