Power Center; 12-Volt Power Circuits - Airstream BAMBI 2023 Owner's Manual

Interior

Power Center

The power center is installed under the bed or below
the refrigerator, depending on the model� Open the
decorative door for access to 12-volt fuses and 120-
volt breakers�
The power center's converter transforms 120-volt AC
into 12-volt DC� The converter/charging system is
the interior low voltage electrical system that enables
you to use the interior lights, fans, pumps, and 12-
volt appliances, whether operating on self-contained
battery power or 120-volt city power� The 12-volt light
bulbs give off the same light as regular household
bulbs, so that when operating on self-contained battery
power, everything works normally except the 120-volt
convenience outlets and 120-volt appliances� The
converter system is designed to maintain constant
output voltages regardless of the variances that occur
in city power systems�
The converter is energized only when the trailer is
hooked up to external AC power�
To test the converter, observe the following:
• Confirm 120-volt power is going into converter.
• Disconnect the 12+ wire from the master switch�
• Using a voltmeter, check voltage output between
heavy gauge positive and negative wires coming out
of converter�
• The voltage should be within 13�6 and 14�0 volts�
(The meter of the tester should be calibrated
periodically�)
• If converter is not within these voltages, have it
serviced by a qualified technician or replace it.
One of these wires is not spliced onto a wire of the
same color� It is the backup wire that is yellow in the
cable and black in the harness�
A label on the inside of the converter door lists the
circuits and what each fuse powers�
5-8

12-Volt Power Circuits

The current in the converter system is 12 volts direct
current (12 VDC) negative grounded� Power sources
that supply 12 VDC current to the system are as
follows:
• Main charge line from tow vehicle
• Trailer batteries
• Converter
The power sources listed above are all electrically
connected to the 12-volt distribution fuse panel that
distributes current to interior branch circuits� The
circuits provide power to operate all 12-volt DC lights,
pumps, motors, and appliances�
Power converter is a solid-state electronic power
supply and is maintenance-free. It is so self-sufficient
and quiet that you will probably not know it is working
except for the fact that your batteries are always
charged, and your 12-volt lights and appliances always
work�
If any 12-volt appliance fails to operate, first check
your 12-volt distribution fuse block, located behind the
decorative front door in the front right-hand corner of
the converter and inspect all fuses� If a fuse is opened
or blown, replace it with the same size fuse (never
install a larger fuse)� If the fuse opens again, have an
electrician or certified RV technician locate the circuit
trouble� Replace blown fuses only with the same type
and amperage size previously used�
If the power converter is not working, first confirm
the RV supply or shoreline cord is plugged into a
live circuit� Then check all the 120-volt breakers in
your RV distribution panel to make sure they are on�
If the breaker is tripped, follow instructions to reset
the breakers� If the breaker trips again, consult an
electrician or certified RV technician.
2023 Bambi