I dont trust this RELIABLE inverter

[73powerstroke]

I had it glitch today with the 5000btu ac unit on for hours. Alarm blips and ac resets. I've run 2 ac units before no issue, so this concerns me. I read a lot of different mixture reviews on this thing before I bought it the other day.
So the one unit is 500w draw at 120v and the other is 715w running both now to put stress on the unit to expose any weakness. Im using 2ga wire 6 feet long the same stuff harbor freight sold with my 2000w modified sine that ran this unit for months already. Why this one would be bigger and pure and blip/glitch is not something I want to see Day 2.
This one is 24v so should be alot easier for it than a 12v
My voltage is around 27-28v according to inverter and my shunt meter and my 3 charge controllers. But seems erratic on inverter. Am I maybe missing something here?

 

[Any name you wish]

If it was running for hours, maybe you have a loose connection. Measure resistance while the system is running from your battery terminal to the input terminal of inverter. Check both sides. I found a loose connection once on a cell like that IIRC.

 

[sunshine_eggo]

If the units were cycling on and off while both were in operation, you're hitting it with a surge load repeatedly. I would not expect a lightweight 2000W inverter to handle it well. I'm actually impressed it ran the 715W unit at all.

I have the 24V/2000W version of that inverter, and I had no complaints with it. Ran the 1600W microwave with no issues, but it wouldn't start anything with a big surge including my 3/4hp jet pump.

 

[73powerstroke]

If the units were cycling on and off while both were in operation, you're hitting it with a surge load repeatedly. I would not expect a lightweight 2000W inverter to handle it well. I'm actually impressed it ran the 715W unit at all.

I have the 24V/2000W version of that inverter, and I had no complaints with it. Ran the 1600W microwave with no issues, but it wouldn't start anything with a big surge including my 3/4hp jet pump.

It's the 2500w 24v one. I was surprised yesterday that it ran them both.

 

[73powerstroke]

If it was running for hours, maybe you have a loose connection. Measure resistance while the system is running from your battery terminal to the input terminal of inverter. Check both sides. I found a loose connection once on a cell like that IIRC.

I'm checking my pv plugs now

 

[Bud Martin]

Can you show us the pictures of your wiring?

 

[sunshine_eggo]

Good point. With that load/surge @ 12V, gotta use transatlantic cable....

 

[Any name you wish]

I'm checking my pv plugs now

Please take pictures of your batteries setup. I watched the videos and cannot tell how you have it hooked up. There are three batteries there. Are there two 12V and one 24V?

 

[Any name you wish]

Watched an older video. you have three 12V batteries there. You would need a 4th 12V battery to make a 2S2P 24V battery.

*edit: I see you are using 1 battery for 12V and 2 12V in parallel for the other half of the capacity. I don't know how that will affect how the system performs. I guess it works...

 

[73powerstroke]

Watched an older video. you have three 12V batteries there. You would need a 4th 12V battery to make a 2S2P 24V battery.

*edit: I see you are using 1 battery for 12V and 2 12V in parallel for the other half of the capacity. I don't know how that will affect how the system performs. I guess it works...

2 group 24s or 27s in parallel with the big 31

 

[73powerstroke]

Good point. With that load/surge @ 12V, gotta use transatlantic cable....

24v

 

[73powerstroke]

 

[BradCagle]

I have the 3000w 24v version, and it's been an absolute beast. Never a problem in over a year.

 

[73powerstroke]

I have the 3000w 24v version, and it's been an absolute beast. Never a problem in over a year.

I have it now lol ? ?

 

[73powerstroke]

Really I need to probably return everything and get a bigger AIO. These 40a cc are sorta limited. The 50 amp on up are much more capable. But im fixed to whatever inverter voltage I need anyway.
The 3000w ran 2 ac units so far.
I had the 5000btu ac running. I started the 6000btu and the 5000btu didn't shut down but the compressor stopped and picked back up later.

 

[Bud Martin]

So the 3000W one is working but the 2500W one is no longer working?

 

[73powerstroke]

So the 3000W one is working but the 2500W one is no longer working?

I just got it earlier today. The startup of the 6000btu makes the 5000btu drop out and then it restarts and they both seem to run and draw around 60amps at 24v from inverter. Solar for whatever reason then only wants to produce 55amps . Not sure the deal there.

 

[73powerstroke]

I guess its meeting the load demand. I measured it wrong earlier. Since I have 3 charge controllers , I only measured the 2 earlier. I have 400w of other panels on a separate cc.
I got the clamp om all 3 cc wires finally. And looks pretty close to what the shunt shows for a inverter draw.

 

[sunshine_eggo]

You are asking a LOT out of that inverter.

 

[sunshine_eggo]

Really I need to probably return everything and get a bigger AIO. These 40a cc are sorta limited. The 50 amp on up are much more capable. But im fixed to whatever inverter voltage I need anyway.
The 3000w ran 2 ac units so far.
I had the 5000btu ac running. I started the 6000btu and the 5000btu didn't shut down but the compressor stopped and picked back up later.

Consider that many 2-3kW AiO may struggle with the same surges, and they have the added hinderance of a 24/7 40-50W idle drain.