Jayco Embark 2023 Inverter Charger User Manual

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Jayco Embark 2023 Inverter Charger User Manual

Inverter Charger

Your motor home has a multiple 12-volt DC to 120-volt AC inverter charger installed that is designed to run selected 120-volt appliances from house auxiliary battery power. For complete detailed operation and safety information refer to the manufacturer’s owners guide found in your warranty packet. Follow all safety information displayed in the manual. The inverter charger is located between the chassis frame rails in the cargo storage area, the controls are operated from the touchscreen. 120-volt circuit breakers protecting inverter charger output circuits are located in the sub-panels under the bed. Circuit breaker labeling near the sub-panels indicate which appliances can be operated from inverter charger power.
Inverter charger 120-volt AC output is a pure sine wave type. The inverter/charger will operate most appliances, tools and other 120-volt AC equipment. The inverter charger also functions as a multi-stage 12-volt power converter/battery charger when the motor home is connected to 120-volt shore power or when the generator is running. In this mode the inverter/charger charges the house auxiliary batteries. Chassis batteries can also be charged either from shore power or using the generator.

NOTE: The inverter is controlled through the Vega Touch system. Refer to the touch screen user guide in your warranty packet or online at http://www.fireflyint.com for detailed instructions.

The inverter/charger generates heat while operating and needs unrestricted air flow for proper cooling. Do not store anything around or on top of the inverter/charger that would restrict air flow around it.

Inverter Charger Remote Controls

To enable automatic inverter operation during power blackout or brownout conditions leave the inverter/charger in “INVERTER” mode at all times.

When in “INVERTER” mode the inverter/charger will be on standby when the motor home is connected to 50-amp 120-volt AC shore power or when the generator is operating. All connected appliances operate off of shore power or generator power during this time. If shore power is interrupted and the generator isn’t running, the inverter/charger will automatically activate providing 120-volt AC power to connected appliances.

Inverter Charger battery charging function

The inverter/charger functions as a multi-stage battery charger when the motor home is connected to 120-volt AC shore power or when the generator is operating. The inverter/charger automatically senses auxiliary battery condition and applies the appropriate battery charging profile. In the event the motor home auxiliary batteries become completely discharged, the inverter/charger will be unable to sense battery voltage and will not begin its charge sequence. To manually initiate charging, turn the chassis ignition key to the “on” position for a short period of time. If the batteries do not charge, or fail to hold a charge, they may be defective.

NOTE: Leaving the inverter/charger in the “on” position when the mo-tor home is in prolonged storage (no 120-volt AC shore power connected) will drain the auxiliary batteries even though all 120-volt AC appliances are turned off.

Inverter Charger fault conditions
Certain fault conditions will cause the inverter to shut down.

These conditions include:

  1. High or low battery
  2. Power consumption overload
  3. Inverter overheating
  4. Inverter internal fault

NOTE: High battery voltage may be caused by excessive or unregulated volt-age from solar panels and/or other external battery charging sources.

Inverter Charger 12-volt DC circuit breaker

Each inverter/charger and its 12-volt wiring are protected by a replaceable high-current fuse typically located near the auxiliary battery bank in the battery box. The 2000-watt inverter/charger is protected by a 300-amp fuse.

Inverter Charger integral 120-volt AC circuit breakers

The inverter/charger is equipped with integral 120-volt AC circuit breakers located on the inverter/charger metal case. In overload conditions, these circuit breakers will trip and interrupt inverter/charger 120-volt AC input and/or output. After correcting the overload condition, reset these circuit breakers to resume inverter/charger 120-volt AC operation.

12-volt DC System

Your motor home lighting is powered by 12-volt electricity. The 12-volt DC system is composed of components that will operate when the following conditions are met:

The house batteries power all interior 12-volt components including the lighting fixtures, water pump, 12-volt motors, 12-volt appliances, etc. when the motor home is not connected to a 120-volt power source. 12-volt DC power is supplied when the shore power cord is plugged into a 120-volt external power source. House batteries will be charged also in most situations. Power is supplied by the chassis alternator when the chassis engine is running.

Replacement fuses must be of the same voltage, amperage rating, and type. Never use a higher-rated replacement fuse; doing so may cause a fire by overheating the RV wiring. The 12-volt fuse panel is labeled to indicate fuse sizes, positions, and the components powered. Fuses are located in the load center.

Replacing a Fuse

Before replacing a fuse, always turn off the electrical components protected by it.

  1. Disconnect the shore power cord.
  2. Inverter should be OFF.
  3. Remove the fuse panel cover to check fuses.
  4. Pull the fuse straight out of the fuse block.
  5. Insert a new fuse of the same specified voltage, amperage rating and type in the original location.

The fuse panel label should be kept permanently affixed to your recreation vehicle. Fuses will not offer complete protection of the electrical system in the event of a power surge or spike.

12-Volt DC Outlet

There may be one or more 12-volt DC power outlets in your recreation vehicle. When the 12-volt DC outlet is used as a power source for an electric appliance, make sure the appliance operates on 12-volt DC power and that it consumes less than 60 watts (5 amps) of power.

Keep the protective dust cap on the 12-volt DC outlet when not in use to pre-vent ingestion of foreign material and potential short circuit conditions.


Do not store anything inside the battery compartment(s) or near the batteries that could touch the battery or battery cable terminals. Contact with the battery or battery cable terminals could cause an electrical short circuit, discharge the batteries, or start an electrical fire.

  • Keep sparks, cigarettes and flames away from the batteries as the hydrogen gas they create may explode. Do not connect a booster bat-tery or other power source that outputs more than 14.2-volts DC to the RV batteries. Use adequate ventilation when charging or using batteries in an enclosed space. Remove metal jewelry and always wear eye protection when working around batteries.
  • Do not allow battery electrolyte (acid) to come into contact with skin, eyes, fabric or painted surfaces. Electrolyte is a sulfuric acid solution that could cause serious personal injury or property damage. If your hands, eyes, clothes or the painted surface of your RV are exposed to electrolyte, flush the exposed area thoroughly with water. If electrolyte gets in your eyes, immediately flush them thoroughly with water and get prompt medical attention. Make sure the inverter charger is turned “off” before disconnecting the negative battery cable from the battery bank. Keep the batteries out of the reach of children.

House Batteries

Unless a battery has been fully discharged, house auxiliary batteries are normally charged in one of two ways:
When the power cord is plugged into 120-volt shore power or when the generator is operational, the inverter/charger functions as a battery charger and will automatically charge the house batteries when required. The chassis alternator charging system supplies power to the house auxiliary batteries when the engine is running and the chassis batteries are sufficiently charged.

See the Chassis Guide for information on the chassis batteries and the drivetrain electrical system. The battery voltage for house and auxiliary batteries is typically monitored on one of the selectable touch screens.
A fully charged battery will read 12.65 volts DC with a specific gravity of 1.265 at 80°F (32°C). A battery is considered discharged at 11.89 volts DC or when it has a specific gravity of 1.120 or less. When voltage drops to 11.89 volts, irreversible battery damage can occur.

Dry Camping

House auxiliary and chassis batteries should be fully charged prior to dry camping. When disconnected from 120-volt shore or generator power (i.e., while dry camping or tailgating) all electrically operated appliances and accessories must be used sparingly. During this period these appliances and accessories are being powered by the house auxiliary batteries directly, and/or indirectly through the inverter/charger. If excessive amounts of power are drawn from the house auxiliary batteries, either as small applied loads over an extended period of time or as high applied loads for a short period of time, they will become deeply discharged. Permanent battery damage will occur after repeated deep discharge cycles.

General usage information (using estimated ratings)

12-volt loads drawn from the battery bank(s) while operating 120-volt appliances through the inverter/charger can approach 300 amps on a single inverter/charger equipped motor home, and 700 amps on a dual inverter/charger equipped motor home. Complete battery discharge will occur quickly when inverter/charger loads are applied. Batteries discharge at a faster rate the deeper they become discharged. To minimize battery discharge:

  • When disconnected from 120-volt shore or generator power and not requiring the operation of 120-volt appliances or equipment, turn the inverter/charger OFF on the touchscreen.
  • Custom configure your inverter/charger’s control panel on the touchscreen (see the inverter/charger owner’s manual) to best meet your power usage profile.

Battery Inspection and Care

Batteries are all sealed AGM types, maintenance-free. Check the external condition of the batteries periodically. Look for cracks in the cover and case.

Battery storage instructions

To prevent house auxiliary battery discharge when your motor home will not be connected to shore power for extended periods of time, it is recommended you turn “off” the 12-volt battery disconnect switch, or (main power switch in the stepwell), and disconnect each battery bank at the negative battery cable running to the chassis frame. During storage, it is important to check the voltage of your batteries at least monthly using the inverter/charger remote control panel if the negative battery cables remain connected. Check with a multi-meter when the battery negative cables aren’t connected. Re-charge all batteries to 12.65 volts as needed. If you remove the batteries from the motor home, store them in a dry, cool area.

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Reference Links

View Full User Guide: Jayco Embark 2023 User Manual

Download Manuals: https://www.jayco.com/manuals

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