Schumacher XI75DU Owner'S Manual Download Page 9

• 9 •



 – The continuous load demand from the device exceeds the converter’s 

wattage output.



 – The converter is overheated and automatically turns off for a period of 1 

to 3 minutes to cool. Make sure the inverter is well ventilated. It will automatically 

restart after it cools.



 – The vehicle’s battery voltage is less than 10.5 volts.



 – Short circuit, power surge or overload in the device.

9. TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

REASON/SOLUTION

Alarm is on.

Display shows 



Device has 

a short circuit or demands too 

much surge power.

Display shows 



.  

12 volt battery is too low. 

Display shows voltage in 

between 10.5-11.0 volts.

Display shows 

.

  

12 volt voltage is too high.

Display shows

 

Device 

demands more than the converter’s 

continuous power rating. 

Display shows 



.

 Converter 

is too hot.

Cycle the converter power OFF 

and ON. If problem persists, use a 

larger converter or a smaller device. 

Remove the defective device.

Recharge/replace battery.

12 volt battery is low. Recharge/

replace battery. The converter will 

automatically shut off after battery 

voltage reaches 10.5-volts.

If in a vehicle, repair/replace the 

alternator or charging system. Use 

a properly sized and rated 12 volt 

battery. If the input voltage returns 

to 15 volts or less, the converter 

will automatically restart.

Cycle the converter power OFF 

and ON. If problem persists, use a 

larger converter or a smaller device.

Increase the ventilation to the 

converter. Move the converter to 

a cooler area. Reduce the power 

consumption of the device. The 

converter will automatically reset 

after cooling.

Summary of Contents for XI75DU

Page 1: ...ttery power to 120V AC household power OWNERS MANUAL PLEASE SAVE THIS OWNERS MANUAL AND READ BEFORE EACH USE This manual will explain how to use the converter safely and effectively Please read and follow these instructions and precautions carefully ...

Page 2: ...SONAL SAFETY PRECAUTIONS 4 BEFORE USING YOUR CONVERTER 4 CONNECTING CONVERTER CABLES 6 OPERATING INSTRUCTIONS 6 POWER SOURCE 8 HOW POWER CONVERTERS WORK 8 LED DISPLAY 8 TROUBLESHOOTING 9 SPECIFICATIONS 10 REPLACEMENT PARTS 10 LIMITED WARRANTY 11 ...

Page 3: ...blow been dropped or otherwise damaged in any way take it to a qualified service person 1 10 Do not disassemble the converter take it to a qualified service person when service or repair is required Incorrect reassembly may result in a risk of fire or electric shock 1 11 Make sure the converter is not close to any potential source of flammable fumes gases or clothing 1 12 Do not place the converte...

Page 4: ...nded source of power is a 12 Volt deep cycle battery due to their high reserve capacity Automotive batteries are recommended for only a short period of time of an hour or less Do not use the converter with a product that draws a higher wattage than the converter can provide as this may cause damage to the converter and product When you turn on a device or a tool that runs on a motor the device goe...

Page 5: ...ing devices we strongly recommend that you use caution and check the device s manual to make sure it is compatible with modified sine waveform 1 Switch mode power supplies 2 Linear power supplies 3 Class 2 transformers 4 Line filter capacitors 5 Shaded pole motors 6 Fan motors 7 Microwave ovens 8 Fluorescent and high intensity lamps with a ballast 9 Transformer less battery chargers Using the conv...

Page 6: ...verter terminal cable to the power source positive or battery terminal Make sure the connection is secure 4 Connect the negative black converter terminal cable to the power source negative or battery terminal Make sure the connection is secure 5 To disconnect the converter reverse the above steps NOTE The internal speaker may make a brief beep when the converter is being connected to or disconnect...

Page 7: ...provides up to 2A at 5V DC 1 Plug the device into the USB port 2 Press and hold the ON OFF button to turn the converter on The internal speaker will make a brief beep This is normal 3 Turn the USB device on 4 Reverse these steps when finished using the USB port USING THE CONVERTER TO OPERATE A TV OR AUDIO DEVICE The converter is shielded and filtered to minimize signal interference Despite this so...

Page 8: ...it should be unplugged to avoid battery drain 7 HOW POWER CONVERTERS WORK There are two stages involved in converting 12 volt DC battery power into 120V AC household voltage STAGE 1 The power converter uses a DC to DC transformer to increase the 12 volt DC input voltage from the power source to 145 volt DC STAGE 2 The converter then converts the 145 volt DC into 120 volts AC household voltage usin...

Page 9: ...s Device demands more than the converter s continuous power rating Display shows Converter is too hot Cycle the converter power OFF and ON If problem persists use a larger converter or a smaller device Remove the defective device Recharge replace battery 12 volt battery is low Recharge replace battery The converter will automatically shut off after battery voltage reaches 10 5 volts If in a vehicl...

Page 10: ...used by reverse polarity or a short circuit within the converter Contact a qualified service technician to replace the fuse s with the appropriate replacement s 10 SPECIFICATIONS Maximum continuous output 750 Watts Surge capacity 0 1 second 1500 Watts No load current draw 0 5A Input voltage range 10 5V 15 5V DC Output voltage range 120V 5 AC Optimum efficiency 85 11 REPLACEMENT PARTS 12V accessory...

Page 11: ...ied by anyone other than Manufacturer or if this unit is resold through an unauthorized retailer Manufacturer makes no other warranties including but not limited to express implied or statutory warranties including without limitation any implied warranty of merchantability or implied warranty of fitness for a particular purpose Further Manufacturer shall not be liable for any incidental special or...

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