I have had a similar problem. I have a 2004 Dutch Star with a 1200lrim refrig. My coach was plugged in to 30 amp for 3 months and the refrig. was off., doors open. Yesterday I turned the refrig. on and mode light shows no ac. I had a 5 amp fuse replaced 2 years ago for the same code and it worked. Can a 5 amp slo blow fuse replace the auto type?. what is the cause of the blown fuse? How hard is it to replace fuse?What steps necessary?