Everything works until I....
unplug the coach from shore power. Batteries are fully charged, had them load tested too. Battery disconnect switch by the stairs works when unit is plugged in to shore power. Switches all power off w...
Forum Discussion
Toddupton wrote:
It sounds like you are flipping the sails an switch and not the battery disconnect switch. If you are plugged in the battery disconnect should not turn off lights. I bet you have another one someplace else.
I have a '98 Coachman Santara class C, and the salesman/battery disconnect switch will turn off the house 12V power even when plugged in. The converter is wired on the battery side of the switching solenoid, not on the electrical panel side. There is no other disconnect switch (at least on mine).
It sounds as though there's some fault in the 12V wiring around the battery. At least on mine, the house battery connects to a master fuse (175A I think), and then to the isolator relay, to the generator (a heavy cable), and with a very short heavy cable to a little bus bar with space for four cube/self-resetting circuit breakers. I've revised the wiring there a little bit on mine, but originally one of the four slots was empty, one had a 20A manual reset breaker that supplied power to the entry step, one had a 6A breaker that supplied power to...something, I think the dash radio preset memory, and one had a 40A breaker that connected to the house 12V fuse panel and to the converter output (two wires on the same stud).
If you have the same circuit topology, then the fault would seem to be either the 40A breaker and/or its connections, or the connections to the little bus bar, assuming only a single fault. If the isolation relay is not working or the charge line from the chassis to the relay isn't working (there is a fuse for it under the hood), then it could also be that and the main fuse...but if the generator shows any signs of life, the fuse is OK. My money would be on the 40A self-resetting circuit breaker needing replacement.
