Inverter, how I hate thee

Was your truck running when you were making all these attempts. How many batteries does your truck have? Are we to assume all your batteries are good? All the connections look good and tight? Your truck always start strong like it has plenty of good voltage/amps?

 

It could be in the kill switch. If you are any electrical inclined Disconnect the kill switch and run power and grounds to the power inverter. If that doesn't work then chances are something has fried inside

 

I remember a few years ago my inverter started acting like that and refusing to work. I thought it was toast. Then, a day later, I started smelling sulfur, and I noticed my batteries were melting. It was a Volvo and they don't have a standard volt gauge, so I never noticed the alternator was over charging. I had it replaced, along with the batteries, and the inverter worked great again. I thought it was funny that a $100,000 truck didn't have a voltage alarm, but my $200 inverter knew enough to turn itself off.
I don't now if that's your problem, but at least it shoes that maybe it isn't the inverter at all, especially when it was working fine before.

 

Just wanna ask, what is the used of that inverter?

 

Try powering it up with nothing plugged in to it. Sometimes the right combination of switching power supplies on the output will make cheap modified sine inverters think that there's an error in the output voltage. This will cause them to shut down with an error code. Cell phone chargers and laptop power supplies are examples of switching power supplies. If you still get the error with nothing plugged in, then check the inverter connections to the battery for corrosion and tightness. I had tight connections and they 'looked' clean, but still got a low voltage error. When I actually took the nuts off the connection, there was a thin film of corrosion on both sides of the ring connectors. Removed it with emery cloth and it worked fine again.

 

It converts (inverts) battery power to house current so you can use small appliances like a refrigerator, tv, microwave, etc.

 

LVP is Low Voltage Protection so I would make sure you have normal input at the inverter itself using a DVOM or similar tester. That would narrow it down quick whether the problem is the inverter or what's feeding the inverter. They do make bad ones straight off the shelf. I would need pictures to see if there was install issues. Are you saying they installed a low power kill switch separate from the inverter or are you talking about the built in one?


You could of bought a good Cobra for the same price.