House battery charging problem...

[goufgators]

This in re: to a 2017 Winnebago. The coach had sat for a few weeks and when I went out to move it today, the coach batteries were dead. It has been constantly plugged into a 30A receptacle. In addition, I had left the on/off 'salesman's switch' in the on position. Isn't the inverter or is it converter supposed to keep the batteries topped off when a/c power is provided thereby preventing discharge? Or, should I have left the on/off switch in the off position? Thanks for any advice. BTW, it's under new veh. warranty but thought if something simple or that I'm doing something wrong, advice from you knowledgeable members might save me from a 60 mile round trip to CW.

[goufgators]

Acampingwewillgo wrote:
I can't speak for the newer RV's but I know the older models, the inverter /charger did not charge the chassis battery, only the house. They use to sell a product that connected between the chassis and house batteries in order to keep the chassis batteries topped off. (I believe it was called an Echo Charger).

The chassis battery is fine. Problem only with coach batteries.

[Acampingwewillg]

I can't speak for the newer RV's but I know the older models, the inverter /charger did not charge the chassis battery, only the house. They use to sell a product that connected between the chassis and house batteries in order to keep the chassis batteries topped off. (I believe it was called an Echo Charger).