ELECTRICAL SYSTEM
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NOTE: INVERTER/CHARGER
Your Owner’s Manual for RV750ULHW contains most of the essential information you need to enjoy the electrical
conveniences of home while at RV parks or dry camping. However, we wish to highlight for you exactly how the
charging portion of the inverter/charger works, in order to help avoid possible confusion:
Supplying shore power or, (optional) generator power enables RV750ULHW to charge the auxiliary battery(s).
Operation of your vehicle engine and alternator will also charge the auxiliary battery(s). When your motorhome is
not plugged into shore power or, (optional) AC generator power, all electricity you use draws power from your
motorhome’s auxiliary battery bank, with the inverter allowing you to enjoy quiet DC-to-AC, (12 volt to 120 volt)
power in the absence of shore or generator power.
10V inverter/charger shut down
As a safety feature, the inverter component of the RV750ULHW inverter/charger, (which changes DC battery power
to AC electricity) will shut itself down when your auxiliary battery bank drops below 10 volts DC. This occurs in
order to avoid excessive discharging and potential damage to the battery(s), as well as to preserve sufficient
battery voltage to maintain the functionality and readiness of the battery charger component of the RV750ULHW .
It is possible, however, for the battery(s) to become discharged below 10 volts DC as a function of activity other
than using the inverter. For example, while dry camping, in the absence of shore or generator power, if a 12 volt
appliance such as the furnace or lights are left on for an extended period of time.
Dry camping battery conservation
While dry camping, (no 110 VAC power available) to conserve battery power, it is recommended to switch the
inverter/charger to the off or charge position, if the inverter is left in the ON position, it will continue to draw 1.25
amps. To ease in switching the inverter/charger to the off position, you will find the remote ON/OFF
inverter/charger switch on your control panel.
Receptacle functionality
When using your motorhome and connected to shore power or optional generator, the receptacles in the
audio/video cabinet and in the galley will function to the 15 amp capacity supplied from the distribution panel.
However when no shore power or option generator power is available, these receptacles are limited to the 750
watts, (15 amps) output from the inverter/charger.
If an overload occurs, the inverter/charger will shut down, and will need to be reset manually, by turning the
inverter off for 1 minute, removing the load, and then turning the inverter/charger back on.
WARNING
: Prior to servicing the 110 VAC Galley GFCI or Audio/Video cabinet interior receptacles, the
inverter/charger output lead MUST be unplugged. These outlets will have live 110 Volt power to them from the
inverter/charger even if the shore power is disconnected.
