NO 12 Volt

The KIB battery disconnect solenoid is stuck unlatched or it is bad...mine went out yesterday, uninstalled it accidentally dropped it on a landscape timber checked it with a meter both load and battery zeroed out....reinstalled it and Thank God it worked again.

When you by-pass the 12 volt switch relay, make sure that you jumper the right two contacts and not the contacts that activate the relay.

Did he trip a switch on the inside of the RV? Do a search for "salesman switch" and you will find lots of information.

I had a similar problem and it turned out that the manual disconnect switch was bad. Originally I thought the switch was fine because it showed 12volts on both sides, but that was just a surface charge.

Power from the inverter/charger goes through the manual switch and then to the batteries. Consequently, I wasn't getting any 12v power to the coach. I hooked a jumper wire across the posts of the manual switch and "wollah" had power to the coach. A new switch(looked like the factory one)was $50 from Del City electronics.

I had the same problem and it was this fuse. I have one in my battery compartment and one next to my charger/ inverter

No 12 volt at all implies nothing from either the house battery and the converter. There check what is common to both with a volt meter. Start at the distribution panel and move out towards the converter and battery.

Time to get the volt meter out and start back tracking. There may be a couple of circuit breakers on the inverter. Make shure you have a good power/connection around the "Salesman switch". I don't know if the "Salesman switch" is the main switch or just operates a solenoid.
Bill

If the manual batt switches are on then it's probably an open breaker or fuse. Have you checked the inverter charger breakers?