'90 Chieftan Mode Switch (connect/Disconnect Aux and Engine batteries) problem


NateClark

New Member
To all, I made this post this morning, when I looked at it I saw some typos. I updated it, and now the post is gone, and is not showing up in recent posts list.
Here is is again - I hope I didn't do something wrong


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Hello everyone, glad to be here and I look forward to help and hopefully being able to help in the future

The switch mentioned (Mode switch) in the title connects the cabin batteries to the engine battery on one setting (Dual), disconnects them on the other (Neutral)

There is another switch, the Aux Battery Disconnect switch, it has a small green light next to it.

Something happened while I was checking out these switches. Previously, the green light would never go off.

Now, all of a sudden all of the interior battery operated items, lights etc., do NOT work UNLESS that Mode switch is in the DUAL position
AND, the Aux Battery Disconnect is ON (i.e., aux batteries connected, sorry for the confusing terminology, but the green light is on in the "connected" state so I've used that to describe "ON")

In other words, the interior lights ONLY work when the engine battery and Aux battery are connected together with that Mode switch in the "dual" position

I can find no fuse or breaker to turn off cabin batteries to interior loads en-masse, also, the cabin batteries are fully charged. Furthermore, if this helps, when shore-power is connected everything is normal irregardless of these dash switches

Thanks for any advice,

Nate Clark
 

NateClark

New Member
To Everyone,
This has been solved in case it happens to anyone else.
There is a procedure outlined in the owners manual to "recover" the "Aux Battery Disconnect switch" in the event the coach battery charge falls below, I think 7 volts or something. Since the Aux disconnect switch is powered by the coach batteries, you need to use this procedure to bring the dual (engine battery) into play.

My coach batteries are fully charged, so I didn't try that procedure

However, I did it anyway, and now my coach battery circuits are back up

Thanks everyone
 
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