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Originally Posted by dkoldman

It will take me some time to purposely drain the chassis batteries, but I can do that. I can also believe you. I think the functional summary of what you are telling me is that in my coach it is possible to have shore power connected, but the charger not charging the chassis batteries?

If so; I can believe, but because I have yet to see my batteries drain down; I didn't know that? In fact, when shore power is connected, I have yet to be able to disconnect any of the vDC functions regardless of the position of switch you are telling me is reading the voltage on the buss to light up green?

New Info:
Until I can get a chance to drain batteries, below is something I can add that I noticed. I have Digital LED Readout in 12vDC socket in Cabin, it runs off the Chassis batteries. It is reading 12.2 vDC with shore disconnected, When I turn on the shore power the Digital LED Readout in 12vDC socket goes to 14.2.

If I press the off button to attempt to turn off nothing happens?

Sorry, You don't need to drain you batteries. I meant to write 12.6 VDC not 12 VDC.

Corrected now.

What would you expect to happen?

With no shore power you are reading the direct chassis battery voltage.
If you have a single battery disconnect wired in your coach it has nothing to do with the chassis battery, only the house batteries.
When you plug into shore power the converter applies charging voltage to the DC buss.
In most class A RVs there is a BIM/BIRD, etc that allows charging voltage applied to one battery set (your house batteries in this case) to also be applied to the other battery(s), your chassis battery in this case. So the 14.2 VDC you see applied to the chassis battery when plugged into shore power is coming from your converter.
In some coaches this cross-connect is from battery set to battery set: this allows the Alternator to charge the house batteries even if the battery diconnect is open.
On other coaches this cross-connect is from the house DC buss to the chassis battery: this allows the converter to always charge the chassis battery.