Battery disconnect switch won't turn on

Your house battery should recharge fastest by driving. I think there's a specific line in the RT manual that it takes 10 hours of charging via generator or shore power to equal 2 hours of driving.

IIRC from my 2 RT 190's ('00 & '02), the battery switch can be on or off without changing whether the house battery charges. Once you have at least a partial charge on it, the disconnect relay should work unless there are other issues.

Your RT 190 is a class B, not a 'B+' (C). Someone in the B forum probably can explain how the disconnect switch works; there's something odd about the sequence of plugging into shore power and operating the disconnect switch to keep the battery from overcharging. It's been about 7 years since I sold nmy last one, so I don't recall the details for certain. I'm assuming you still have the original relay and 'battery boiler' converter.

Jim, "I thought a gentleman should open a door for a lady, but all she did was scream and fly out of the plane."

Try charging the battery with a stand alone charger, then try again. The disconnect switch is electrically operated, so if the battery that works it is discharged, the switch won't work. It has to be powered by one of the batteries, otherwise, it wouldn't work while you are unplugged from shore.

Either the switch, or the solenoid may be bad, but the first thing to try is charging the battery.

I have been thinking about this. Let's assume you don't have bad hardware for a minute. You can have 2 situations.

1. Battery is disconnected, but dead. In this case, plugging into shore power won't charge the battery, but driving it may.

2. Battery is connected, but dead. In this case, either plugging into shore power or driving it will charge the battery.

However, it is surest to just put a stand alone charger on the battery. That way you KNOW it is being charged. That is why I suggested using a stand alone charger above. It takes out all charging variables.

Something else you may try. Start the engine then try the disconnect again. That may be enough to re-engage it. However, I still think your house battery is dead.

Hmmm I'm not sure what 'type' I have. It's just the standard one that came with my Roadtrek.

Depends on what type of battery disconnect you have. My intellitec battery disconnect requires charged battery and it also has a couple of fuses which might prevent it from working. Plugging into shore power should provide power to disconnect (assuming battery was problem) and allow you to charge battery.