MQ Power WHISPERWATT DCA180SSJU

Questions and Answers

K
Kevin NavarroJul 31, 2025
What to do if the circuit breaker tripped on my MQ Power WHISPERWATT DCA180SSJU Inverter?
- W
  William WilsonJul 31, 2025
  If the circuit breaker tripped on your MQ Power Inverter, it could be due to several reasons. First, check the load for a short circuit and repair it if necessary. Second, confirm the load requirements and reduce them if there is an overcurrent. Third, check the circuit breaker and replace it if it is defective. Finally, confirm the load requirement and replace the over current relay if it has been actuated.
K
Kristen SmithAug 8, 2025
Why is my MQ Power WHISPERWATT DCA180SSJU showing no voltage output?
- D
  David GibsonAug 8, 2025
  There could be several reasons why your MQ Power Inverter is showing no voltage output. First, check the output voltage using a voltmeter to ensure the AC voltmeter isn't defective. Second, check the wiring and repair any loose connections. Third, the AVR may be defective and need replacement. Fourth, the rotating rectifier might be defective, requiring a check and replacement. Finally, check the exciter field for 17.3 ohms across J & K on CN1.
M
Maria FullerAug 16, 2025
What to do if my MQ Power WHISPERWATT DCA180SSJU Inverter has low voltage output?
- H
  hughesamberAug 16, 2025
  If your MQ Power Inverter has low voltage output, first ensure the engine speed is correct by turning the engine throttle lever to "High". Then check the wiring connections and repair any loose connections. Finally, the AVR may be defective and require replacement.
S
Samuel BryantAug 22, 2025
How to fix high voltage output on my MQ Power Inverter?
- S
  Sharon HubbardAug 22, 2025
  If your MQ Power Inverter has high voltage output, first check the wiring connections and repair any that are loose. Also, the AVR may be defective and need to be replaced.

Summary

Proposition 65 Warning

Reporting Safety Defects

Parts Ordering Procedures

Specifications

Generator Specifications

Technical specifications for the generator unit.

Engine Specifications

Technical specifications for the John Deere engine.

Dimensions (Top, Side and Front)

Safety Message Alert Symbols

Hazard Symbols and Warnings

Explanation of hazard symbols and specific warnings (DANGER, WARNING, CAUTION).

Specific Hazard Warnings

Details on lethal exhaust, explosive fuel, burn, and electrocution hazards.

Other Safety Alerts

Alerts for rotating parts, accidental starting, over-speed, and sensory hazards.

Rules for Safe Operation

General Safety Precautions

Essential safety rules for operating the generator.

Generator Grounding and Electrical Safety

Guidelines for safe grounding and electrical connections.

Maintenance and Battery Safety

Safety precautions for maintenance and battery handling.

Towing Safety and Emergencies

Safety guidelines for towing and emergency preparedness.

Generator Decals

Installation

Installation Site and Grounding

Guidelines for proper installation site selection and grounding.

Mounting and Ventilation

Instructions for mounting and ensuring adequate ventilation.

General Information

Generator Overview and Systems

Description of the generator, engine, governor, and excitation systems.

Control Panels and Terminals

Familiarization with control panel and output terminal components.

Major Components

Diagnostic Display

Display Panel Overview and Parameters

Description of the diagnostic display panel and its functions.

Navigating the Diagnostic Display

Guide to start-up, menu navigation, and language selection.

Diagnostic Display Faults and Warnings

Information on auxiliary gage faults and other system warnings.

Active Fault Codes

How to view and interpret active fault codes on the display.

Shutdown Codes and Backlight Adjustment

Handling shutdown codes and adjusting display backlight.

Contrast Adjustment

Procedure for adjusting the display contrast settings.

Unit Selection and Setup 1-Up Display

Setting display units and configuring the 1-Up display.

Setup 1-Up Display Options

Details on using defaults, custom setup, and automatic scan for 1-Up display.

Setup 4-Up Display Configuration

Instructions for configuring the 4-Up display with defaults or custom settings.

Utilities Menu

Accessing and using the utilities functions within the diagnostic display.

MODBUS Setup

Configuring MODBUS settings for serial port communication.

Generator Control Panel

Engine Operating Panel

Panel Controls and Gauges

Description of gauges and switches on the engine operating panel.

Engine Controller and Status Indicators

Explanation of the MPEC controller and its status indicators.

Output Terminal Panel Familiarization

Terminal Panel Components

Identification of receptacles and terminal lugs on the output panel.

Connecting Loads and Over Current Relay

Instructions for connecting loads and understanding the over current relay.

Load Application

Generator Outputs

Output Voltages and Configuration

Information on available output voltages and the change-over board.

Maximum Amps by Voltage

Table showing maximum amperage ratings for different voltages.

Generator Outputs; Gauge Reading

AC Ammeter and Voltmeter Usage

How to read AC ammeter and voltmeter gauges and their usage.

Output Terminal Panel Connections

Setup

Circuit Breakers and Lubrication Oil

Setup for circuit breakers and engine oil level checks.

Refueling Procedure

Safe procedures for refueling the generator.

Coolant and Air Cleaner Maintenance

Instructions for coolant and air cleaner maintenance.

Battery and Wiring Checks

Procedures for battery installation and wiring inspection.

Generator Start-Up Procedure (Manual)

Generator Start-Up Procedure (Auto Mode)

Generator Shut-Down Procedures

Normal Shutdown Procedure

Procedure for safely shutting down the generator normally.

Emergency Shutdown Procedure

Procedure for immediate shutdown in emergencies.

Maintenance (Engine)

Inspection and Maintenance Schedule

Table outlining daily, 250, 500, and 1000 hour maintenance tasks.

Engine Specific Maintenance Procedures

Procedures for air removal, oil check, filter replacement, and fuel strainer.

Maintenance (Heater;Charger)

Maintenance (Trailer)

Trailer Components and General Maintenance

Definitions of trailer components and general maintenance.

Brake System Maintenance

Procedures for inspecting and adjusting hydraulic surge brakes.

Tire, Wheel, and Suspension Care

Guidelines for tire wear, inflation, and suspension inspection.

Lug Nut Torque Requirements

Proper torque specifications for wheel lug nuts.

Trailer Wiring Diagram

Generator Wiring Diagram

Engine Wiring Diagram

Troubleshooting (Generator)

Troubleshooting (Engine Controller)

Suggested Spare Parts

Generator Assy.

Control Panel Assy.

Control Box Assy.

Engine and Radiator Assy.

Output Terminal Assy.

Battery Assy.

Muffler Assy.

Fuel Tank Assy.

Enclosure Assy.

Rubber Seals Assy.

Nameplate and Decals Assy.

Terms and Conditions of Sale - Parts