Jayco Embark 2022, Owner'S Manual

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Section 6: Electrical System
electrical system service. Certain models will not include the “HOUSE” power switch.
The power steps at the entrance door will also continue to work with these switches in the
“OFF” position.
Battery Isolation Manager
Your motor home is equipped with a Battery Isolation Manager (BIM) that monitors the
battery voltage of both the chassis and house batteries over long periods of time. If it senses
a charging voltage it connects the two batteries together. If the charge system is overbur-
dened, it isolates both batteries. When batteries have reached a float charge state for (1)
hour, the batteries are isolated to prevent overcharging. It will reconnect if either battery
drops to approximately 80% charge and the other is being charged. If batteries are not being
charged they will be isolated to prevent an electrical draw in one system from depleting the
other battery.
Auxiliary (Battery Boost) Start System
The “Battery Boost” switch is a manual override of the Battery Isolation
Manager. It can be used in an emergency (when chassis or house batter-
ies are discharged) to start the chassis engine or the generator.
To operate, press the Battery Boost start switch located on the driver’s
left side console. While the battery boost switch is pressed, use the ig-
nition key to start the chassis engine or the generator switch to start the
generator. Release the battery boost switch once the engine or generator
has started.
If your chassis and house batteries are too discharged to start the engine
or generator with this method, they need to be recharged with the on-board inverter/charger
or by connecting the motor home to shore power.
NOTE: The combination carbon monoxide/propane alarm is connected
to a constant 12-volt power source. The carbon monoxide/propane alarm
remains operational when the battery disconnect solenoid switch, or “main
power switch,” is in the “OFF” position.
Automatic Transfer Switch (ATS)
Your motor home is equipped with an Automatic Transfer Switch with built in reverse polar-
ity protection. The ATS is microprocessor controlled and will automatically detect which
power source is being used (generator or shore power) and allow power from that connec-
tion only. You will not have to plug and unplug power to the coach if you decide to run the
generator.
If you plug into shore power, the ATS will pass power to the motor home. If the generator
is started, it will override the shore power input (called generator dominant) and supply the
RV with electrical power from the generator. When the generator is shut down, shore power
is restored.
There may be a slight flicker of the lights when the ATS changes over from one to the other,
but there is no real interruption of power.
The ATS will disconnect from shore power completely if the power coming in is not high
enough quality (i.e. either low/high voltage, or low/high frequency).
When the generator is operating, it powers the inverter/charger which in turn functions as a
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