Fues blown in xpower inverter 1750 plus

What specifically are you having a problem with?

The 14 AWG Positive wire should be connected to one side of a 30 A relay (typical fog lamp relay available at most automotive stores). The relay's other 30 A contact should be connected to the battery positive post via a 10 AWG (up to 6 ft/2 m)

http://www.xantrex.com/power-products-support/overview.aspx

That link will probably not get you much help but it is all Xantrex offers for out of warranty products. You may be better off to find a small compressor at Walmart or autoparts store and see if you can adapt it to the space in the PP400.

Sorry, this section is for Measurement Tool Questions only.

Check inverter fuse, the fuse contacts and, check switch itself. I have seen numerous failed switches of the same configuration on other devices

code is 6241

My powerpack will not charge at all. I have used the cars charger as well as the typical wall plug in. I have left it plugged in for a week and only get an alarm sound and no power is coming out. Any suggestions would be greatly appreciated.

Assuming a car battery with a capacity of 70Ah at its nominal voltage of 12V, the total energy stored in it amounts to 12V * 70Ah = 940Wh.

Your Xantrex XPower 400 Inverter is designed to deliver continuous power of 320W at a specified efficiency of 90% (I doubt that, this degree may be achieved for ideal conditions of load / outside temperature / air humidity / current beer price, but not for the whole power range, but let it be 90% for the argument's sake).

Lets assume your desktop needs 150W of power (no high end CPU or graphics board involved), plus the 75W light bulb, plus 10% loss due to power conversion, gives a total of ~280W power need.
This is well inside specs, so no problem here.

However, your battery can deliver this power for 940Wh / 280W = 3.8h only until its completely depleted.

Your observation of four hours of time from full charge to depletion is thus quite exactly what you can expect, you have no reason for complaints unless you were promised a longer time under the conditions you give.

If you don't have enough current to run the inverter, even at 14.1 v, it will go into protection. Make sure the wiring is heavy enough to provide the current needed to run the inverter. There should be a label on the fan saying what vosges it needs to run. Try powering up the fan outside the inverter.

turn the unit off and then disconnect the negative from the back and turn th unit back on that way the inverter will use all the charge kept inside.
Reconnect the negative and start the unit ...I did that to my unit and for fun I asked tech support for help they told me that I need to buy ne one...After I reset my unit I been using now since for over 2 years...sometime it come back one every few months if I have high voltage coming and I redo this again and it works...save your money