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Interior
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 in to 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 the instructions to reset
the breakers� If the breaker trips again, consult an
electrician or certified RV technician.
Converter Operation
The electronic power converter is designed to supply
the nominal 12-volt-filtered DC power for all 12-volt-
operated devices encountered in RV service� Although
the converter is an excellent battery charger, the
converter does not require a battery to be connected to
it for proper operation�
NOTICE
When installing a battery(ies), always observe
polarity. Connecting a battery in reverse polarity
will blow the power converter main fuses.
120-Volt AC Panel Board
The AC panel board section contains the 120 VAC
branch circuit breakers for your RV� One of the
breakers controls the 120-volt power to the 12-volt
converter section� This breaker may also control
another branch circuit� Check the label next to each
breaker for what each branch circuit breaker controls�
The 120-volt circuits may be turned on by setting their
breaker handle up to the ON position, or off by setting
the handle down to the OFF position� To reset the
tripped breaker, move the handle to OFF then ON�
The system incorporates GFCI breakers that
implement an auto self-test functionality� When turned
off, these breakers require external AC power to be
present, or the AC inverter enabled, before they can
be turned back on� If AC power is present from one of
these two sources, and the breaker refuses to stay on
consult an electrician or certified RV technician.
Converter Cooling System
The power converters electronic fan cooling system
is the key to long life and trouble-free operation� The
fan is never on more than required to cool electronic
components in the converter� You may never hear the
fan operate�
5-12
Automatic Micro-Controller Operation
The power converters 2-stage switch mode is fully
automatic� The converter senses which mode it needs
to be in by checking the condition of the batteries� The
two modes include:
Absorption Mode: During this mode the converter
output is in the 13�6 VDC range� This is the mode
that the converter will function at normally� This mode
provides the 12 VDC and the current required by the
trailer�
Bulk Mode: In this mode, the output voltage of the
converter will switch to 14�6 VDC range for a maximum
of four hours� If the converter cycles between
"Absorption and Bulk modes", there could be a shorted
battery cell or other issues�
120-Volt Electrical System
City Power
When your trailer is hooked up to external AC power,
the converter system automatically charges the trailer
batteries regardless of the position of the battery
disconnect switch located on the Multiplex Control
Panel� If the 7-way cord is hooked up and, depending
on your vehicle, your tow vehicle battery will be
charged as well� The speed and degree of charge
depends on how much power is used for lights and
appliances, as only the surplus goes to charging the
battery� If you are making an extended stay, you should
keep your trailer hooked up to a 120-volt current if it is
available�
While you are connected to external AC power, the
wiring is protected by circuit breakers in the breaker
panel� The circuit breaker panel for the 120-volt system
is located in the converter� In the event of a failure of a
120-volt circuit, first check your trailer circuit breakers
and the breaker for the outlet into which your trailer
shoreline cord is plugged� If a breaker continues to
trip after you have reset it several times, your circuit
may be overloaded with appliances or there may be a
short in the circuit� Try lessening the load on the circuit�
Perhaps an electric griddle, hair dryer, or an electric
heater can be turned off� If that does not solve the
problem, consult an Airstream Service Center�
The 120-volt electrical system provides power to
operate the air conditioner, converter, and 120-volt
receptacles for portable appliances� The power is
carded through the 120-volt city power flexible cord to
the 120-volt distribution panel, and then is distributed
to each appliance or receptacle� Exterior outlets for
120-volts are located on the curbside exterior wall�
All wire, components, and wiring methods conform to
federal and state requirements.
2024 Classic
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