Mastervolt CombiMaster 12V - 3000W - 160 Amp (120V) Instruction Manual

1. Introduction

The Mastervolt CombiMaster 12V - 3000W - 160 Amp (120V) is a powerful and versatile inverter/charger designed to provide reliable AC power from a DC battery bank and efficiently charge batteries from an AC source. This unit combines the functions of a pure sine wave inverter and an advanced battery charger, making it ideal for various applications including automotive, industrial, grid-connected, off-grid, and solar installations. This manual provides essential information for the safe and effective installation, operation, and maintenance of your CombiMaster unit.

2. Safety Information

WARNING: Read all instructions before making or breaking connections to the battery. Explosive gases, flames, and sparks can occur. Ensure adequate ventilation during charging. Charge lead-acid or Li-Ion batteries only.

• Always disconnect power before performing any installation or maintenance.
• Ensure proper ventilation around the unit to prevent overheating.
• Use appropriate personal protective equipment (PPE) when working with electrical systems.
• All electrical installations must comply with local and national electrical codes.
• Only qualified personnel should perform installation and service.

3. Product Overview

The Mastervolt CombiMaster unit integrates an inverter and a charger into a single, compact enclosure. It features clearly labeled connection points for DC battery input, AC input, and AC output, along with status indicators for operational modes.

Figure 1: Front view of the Mastervolt CombiMaster unit, showing the blue casing and status indicators.

Figure 2: Rear view of the Mastervolt CombiMaster, highlighting the DC battery terminals, AC input/output terminals, and remote control ports.

Figure 3: Side view of the Mastervolt CombiMaster, illustrating the integrated wall mounting bracket for secure installation.

4. Setup & Installation

4.1 Mounting the Unit

1. The CombiMaster is designed for wall mounting. Use the included wall mount plate.
2. Securely attach the wall mount plate to a sturdy vertical surface using appropriate fasteners.
3. Align the hook at the back of the CombiMaster casing with the wall mount plate and carefully hang the unit.

4.2 Electrical Connections

Before making any electrical connections, ensure all power sources are disconnected.

1. Battery Connections:
   • Unscrew the service panel at the bottom of the enclosure to access the connection terminals.
   • Connect the positive and negative battery cables to the designated terminals.
   • To ensure a safe and secure connection, use a torque wrench with an insulated box spanner. Apply a maximum torque of 7 Newton-meters. This prevents accidental shorting of the battery.
2. AC Mains and Load Connections:
   • Connect the AC mains input (shore power or generator) to the AC input terminals.
   • Connect your AC loads to the AC output terminals.
3. Accessory Connections (Optional):
   • The CombiMaster supports various accessories for enhanced monitoring and control. Refer to the specific accessory manual for detailed connection instructions.
4. Once all connections are made, secure the service panel with its fixing screws.

5. Operating Instructions

5.1 Powering On/Off

The CombiMaster unit has a power switch located at the bottom of the unit:

• Position 'I' (On): Activates both the inverter and charger functions.
• Position 'O' (Off): Turns off the unit.
• Position 'II' (Charger Only): Activates only the battery charger function, allowing charging without inverting power.

5.2 Status Indicators

The front panel features LED indicators that provide real-time status of the unit's operation:

• Charger Status: Indicates mains on, bulk, absorption, and float charging stages.
• Inverter Status: Indicates inverter on, overload, low battery, and temperature warnings.

5.3 Monitoring and Configuration

For advanced monitoring and configuration, Mastervolt offers various solutions:

• On-site Monitoring: Devices like battery monitors can provide immediate feedback on battery voltage, current, and state of charge.
• Remote Monitoring: Remote management portals and mobile applications allow for remote configuration, monitoring of system performance, and access to historical data when the unit is connected to the internet via compatible interfaces.

6. Maintenance

Regular maintenance ensures optimal performance and longevity of your Mastervolt CombiMaster.

• Keep the unit clean and free from dust and debris. Ensure ventilation openings are not obstructed.
• Periodically check all electrical connections for tightness and signs of corrosion.
• Inspect cables for any damage or wear.
• Ensure the battery bank is well-maintained according to the battery manufacturer's guidelines.

7. Troubleshooting

If you encounter issues with your CombiMaster, consider the following basic troubleshooting steps:

• No Power Output: Check the power switch position, battery connections, and AC input source. Verify that the battery voltage is within the operating range.
• Charging Issues: Ensure AC input is present and the charger is enabled. Check battery connections and battery health.
• Overload/Temperature Warning: Reduce the load on the inverter or ensure adequate ventilation. Allow the unit to cool down if a temperature warning is active.
• For persistent issues, refer to the detailed troubleshooting section in the complete product manual or contact Mastervolt technical support.

8. Specifications

9. Warranty & Support

The Mastervolt CombiMaster 12V - 3000W - 160 Amp (120V) is covered by a manufacturer's warranty. Please refer to the warranty documentation included with your product for specific terms and conditions. For technical support, service, or further inquiries, please contact Mastervolt customer service or visit their official website.