For Jeff H:
“Here's why, listen to this symptom. When I am running the Engine only, I try to push the USE side of the Batt Disconnect switch. It makes the noise near the Breaker relay cabinet where the inverter is, but I don't get any power to the coach. No lights, no water pump, not even a sign of any readings on the monitor panel for battery level or water tank levels.”
Answering this question, if you are running the engine, the first question - are the coach batteries charging? If they are not, is 12 alternator power getting past the Trombetta/BIM/BCC? To check that see if the two sides of the Trombetta/BIM have the same voltage - somewhere above 13.5 v. If the coach side reads the same voltage as as the coach batteries, that means that 12v power is getting from the cozch batteries to the coach side of the Trombetta/BIM, but the Trombetta is not opening connecting the coach and chassis batteries. It also tells you the two 100 amp breakers are working. If the voltage on both sides of the Trombetta/BIM is the same with the engine running, the Trombetta/BIM is working. If that is the case, now check the voltage at the coach batteries. If it reads the same as at the Trombetta/BIM, the 100 amp breaker is closed and working. If the voltage at the coach batteries reads less than at the Trombetta (below 12.7v) then the 100 amp breaker is open. Either close it or replace it. If the 100 amp breaker is working correctly, but no power is getting to the coach while the engine is running, the UsE/Stire switch is bad. If you hear the thunk when you engage the use/store, then it probably is the 100 amp breaker or a break in the wiring. But it is easy to check using a volt meter.
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