Thor Motor Coach CLASS B, Owner'S Manual

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E L E C T R I C A L S Y S T E M
C U S T O M E R C A R E | 8 7 7 . 8 5 5 . 2 8 6 7
System Control Panel
Home button on System Control Panel
Illustration of
Lock, Standby,
and Off control
features
Swiping and tapping to change screen views
OFF-THE-GRID POWER
When shore power is not available or not detected by the
transfer switch, the on-board lithium battery system provides
the power for all 120 volt AC and 12 volt DC devices. 12 volt
DC-powered devices are powered directly by the on-board
battery pack, while the 120 volt AC devices (mainly the
microwave oven, air conditioner, TV, and other entertain-
ment devices) are powered by the 3000 watt inverter, which
converts 12 volt DC battery power to 120 volts AC.
While operating the electrical devices of the motorhome
strictly by the battery power system, being mindful of electri-
cal loads and power demands becomes very important. Due
to the limited availability of power from the on-board battery
(400Ah maximum from fully-charged battery pack), one
should always be conservative with power use whenever shore
power is not available.
NOTE: When operating off-the-grid, always take
advantage of the on-board solar charger, which uses
solar power to replace battery power consumption.
The system has a user-interface control panel; mounted
near the sliding door entrance of the motorhome (loca-
tion may vary depending on model).
1. Remove the protective
cover to access the con-
trol screen.
2. Locate and hold the
home button. After a few
moments, the control
panel screen will turn
ON, displaying the sys-
tem’s monitoring screen.
3. To turn OFF the
control panel, hold
the home button
for approximately 3
seconds; an option
screen will appear.
Select Lock, Stand
by, or Off.
SCREEN NAVIGATION
Navigate to another page by swiping or by tapping the left or
right bottom of the screen. The bullets on the bottom of the
display show how many pages are in the menu selection and
which page of the sequence is being displayed.
Soft buttons located along the top of the touch-screen allow
navigation to other menu screens.
Refer to the manufacturer’s instructions regarding system
configuration, operation, and fault codes displayed by the
control panel.
Li-ion System Safety Relays
If a non-resettable BATTERY SAFETY event occurs;
set the safety relay(s) to LOCK OFF and contact
a service representative for assistance. Refer to
the manufacturer’s instruction manual for further
information.
IF THE SAFETY RELAY HAS BEEN TRIGGERED:
1. On the MasterBus control panel, check that the
voltage is within limits; between 10V and 15.5V or
20V and 31V.
2. If within limits, click the CLOSE RELAY button on the
MasterBus control panel. Start charging if voltage is
Low or discharging when high.
3. If Relay trips again, Isolate battery and contact a
manufacturer’s (Mastervolt) representative.
WARNING WARNING
Attached to the underside of the vehicle (location varies due
to floor plan design) are two safety relays, one for each battery
pack (see illustration below).
In order to draw power from the battery packs AND provide
charging to the Li-ion battery system, the safety relays must be
in the ON position and latched. As these safety relays also act
as a power disconnect for the battery packs, place the safety
relays in the OFF position whenever servicing the Li-ion sys-
tem is required or when taking the Li-ion system out of service
(such as placing the vehicle in storage).