User manual

If shore power is connected with the battery disconnected, the Converter will supply

power and the low voltage loads will work if you have the direct connection configuration.

Note that the converter may be unstable and the lights may flicker due to the “no battery

connected condition.” You should not operate the system in this way.

If you have the direct connection configuration and connect shore power without turning

on the battery disconnect first, it may demand more current than the converter can

provide when you turn on the battery disconnect. A warning message will appear under

this condition. This condition can be avoided by switching the battery "on" before

attaching shore power or turning on the generator.

Note that the battery disconnect is "powered" from the RV battery and if the battery is

dead, you cannot operate the switch. Starting the vehicle will charge the battery a bit

changing the RV battery state from "DEAD" to "POOR."

Battery Disconnect

This is a curious device. Unlike a typical relay, it only

needs power to open or close. The relay "latches" in

the on or off state. The simulator shows the four

possible states. The coil is energized to close the

switch, in this case, the coil pulls the armature in and a

permanent magnet above is "attracted" to the coil,

when the power is released the magnet prevents the

armature from moving back.

To "open" the relay, you reverse the connections to the

coil and this deflects the magnet away from the

armature. When the coil is de-energized, the armature can move and the circuit is

broken. Note that if you "push" and "hold" the rocker switch in the "off" position, the

battery disconnect is closed while you hold the switch down.

Holding the on or off button on the monitor panel down for more

than a brief period can overheat the battery disconnect and

damage the device.

As of this revision, Roadtrek has begun using a new type of disconnect which works a

little differently. This device has one momentary, pushbutton switch and the disconnect

cycles from on to off when depressed.

Vehicle Battery Leakage Current

In recent years, the GM vehicles have much higher battery demand when not in use. This

has drastically shortened the time the vehicle can be stored before the vehicle battery

runs down. A certain amount of current is required to retain the memory contents of the

engine control computer in addition to the normal "self discharge" characteristic of Lead

Acid batteries. Older vehicles drew about 12 milliamps when idle and can easily be

started after 5 or more weeks of inactivity. Anecdotal reports from others who have