hi I am a newbie, and this is my first post..... my husband and I have just purchased our first motorhome ( a ducato lifestyle) just wanted to ask some of you that have experience with these things about the fridge ,after reading the user manual, it seems that the fridge can only be used while the engine is on or if it is switched to gas you can only use it in certain areas, how do I keep things cold and why would there be a freezer box if it cant be on all the time, am I missing something lol, .... any help and advice would be welcome many thanks