1800 inverter. when load (even a small load 150

Unit is shutdown with display showing "OPP"

Inverter is short circuit and has shut down.

Reset to normal operation by using manual switch

Hi, here is the error codes that I could find for you, it seems you are overloading the inverter. That means you cannot connect a kettle or other heavy load to the output. See all error codes below, hoep this helps.

Problem: The AC load will not operate, error code shows on digital
display and alarm is sounding.
Error Possible Cause Solution
E01 Low voltage shutdown because battery is discharged.
Recharge battery. Shorten cables or use heavier cables.
E02 Over-voltage shutdown because of high input voltage.
Verify the charging system is properly regulated and the battery
is 12 V nominal.
E03 The AC product(s) connected are rated at more than the
inverter's continuous power rating; overload shutdown has
occurred. Use a product with a power rating within the inverter's continuous power rating (see Table 3).
E04 The inverter has overheated due to poor ventilation.
Overheating shutdown has occurred.Turn inverter off and allow to cool for 15 minutes. Clear blocked fan or remove objects covering unit. Move the inverter to a cooler place. Reduce load if continuous
operation is required.
E05 The AC products connected have a surge power that exceeds
the Digital Inverter's surge capability or the AC products connected are short-circuited and shutdown has occurred.The products exceed the inverter's surge capability. Use a product with a starting surge power within the Digital Inverter's capability.

Northern tools has it here, even though it's a discontinued product:

http://www.northerntool.com/images/downloads/manuals/166520.pdf

A 5000 wat inverter is very large. Your alternator could not supply it alone without the batteries. The moderate to low usage is the key. Calculate the wattage of the load you want to connect. Depending on what else you're doing with the truck, lights, heater, air condition etc, you could probably draw somewhere between 1,0000-1500 watts on that alternator. Rember even if your alternator is rated for 150amps (large alt) it is not a 100% duty cycle. Alternators are usually around 50% duty cycle, so figure about 75amps continuous, or around 900 watts. That's considerably less than your 5,000 watt inverter. Buy a generator.

test power out- put if good then ur microwave even though showing 600 watts the amp draw might be higher than inverter out

Hi Schnupfy,

Well, it may be advertised as 1800 watts, but that is a peak. While the 230 VAC may be dead on target, don't expect it to run a mig welder.

Sustained high output is totally dependent upon the power source. What it's doing is protecting itself. DCDC Shutdown indicated 'An overload or system Fault'

Possible problems that would cause this:

• The load is too high (what is the load?)
  
• The power source is intermittent or weak
• The power source is run through a distribution panel or isolator (Voltage drop)
  
• The wiring from the 12VDC source is too long for the gauge used

Click here for a PDF copy of the manual. It is quite well documented.

BEST REGARDS,
MIKE

the power transistor may be bad or cont actors not switching

Your inverter has a peak of 3000 watts rating and should power that hair dryer. Make sure your batteries are in good shape. The inverter can only put out what it takes in. 1800 watt demand on the inverter requires 1800 watts from the batteries.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

The amp meter on this unit measures the battery current. So if you have an 8 amp load at 120 vac you will draw more than 80 amps at 12 volts and 40 amps at 24 volts. While this may not explain the 180 amps that you are seeing -- it's possible that the dryer is drawing more than 8 amps.

It would depend on the load being driven by the inverter (which would determine the current drawn by the inverter), the capacity of the batteries and the shutdown voltage of the inverter.