Originally Posted by Mickeyshell
New to us 2008 Itasca Suncruiser 38T. Our first Class A. We have a 50 circuit installed to hook to shore power at home and a progressive surge protector for protection. Disconnected today to go for a driving lesson and coach batteries dead. Found that the 25 amp fuse by the batteries was popped. Reset, drove and check and the batteries after about and hour showed 12.4 on the power management system. Turned on the generator. Turned off the generator and the same breaker popped again. We have 2 exide AGM 24 batteries that from the paperwork in the coach are about 18 months old.
Not sure why batteries went from 13.8 this morning to stone dead while hooked to power ( lights were working while hooked to shore power and we were only disconnected about 20 minutes before starting engine
Did you mean to post that a circuit breaker that is 25 amp is tripping ? I see that there is a 25 Amp Circuit Breaker for Electric Step on the circuit breaker panel. Is this what you meant? I looked at the wiring diagram for your coach and there was no 25 Amp fuse right next to the battery shown on the OEM wiring diagram. If there is one it may be a post factory build modification. If it's factory it should have a Yellow wire with printing on it leading away from it on both sides. You can tell us what the printed Letter Code on the wires are and we can look up the purpose of the wire and it might help us aid you. You also might post a picture of the fuse that is blowing if it is in fact a fuse, it might help us tell if it's factory or a modification.
When you are connected to shore power, is everything 12 volt in the RV working like lights, vent fans, including you have the ability to operate the slides?