Electrical gremlin

[David Brady]

Folks,

I have a slight problem with my generator auto
start feature. The auto start is controlled by a
board called the Gencon, built by Westhaver
Assoc. The gencon monitors the house batteries
and the shore power and starts the generator
when the house batteries dip below 11.4V or
when the shorepower drops below 104V AC.

I have good shore power and my house batteries
are charged, the dash "DC Volts Coach" gauge
reads 14V and the trace inverters indicate 100%
charge, nonetheless the gencon wants to start the
generator.

Here's the kicker, my dash "DC Volts Engine"
gauge reads around 12.5V, if I switch the dash
"Aux Battery" switch to "on " (thereby connecting
the house and the engine batteries), the gencon
no longer wants to start the generator.

I would think that the discharged engine batteries
would put even more of a load on the house batteries
prompting the gencon to start the generator, but the
reverse happens, with the "Aux Battery" switch disabled the
gencon wants to start the generator while enabling
the "Aux Battery" switch prevents the gencon from
starting the generator. It's almost as if my gencon is
monitoring the engine batteries and not the house
batteries...

Thanks for your help,
David Brady
'02 LXi, Smokey
Va