MPP-Solar LVX-6048

[nc73]

So today I got fault 60 again. Grid went out mid last night and power came on the morning as PV power was ramping up it faulted…

Can't say I'm surprised...

 

[koppted]

Can't say I'm surprised...

Is this an issue that you think the 20uf Caps can fix? I'm having the same issue not only with flickering lights, but with the system shutting down on solar ramp up.
I finally went ahead and updated my firmware on the LVX6048WP from 1.19 to 1.23 and not only did it not fix the flickering issue, but its doing that shutting down thing that mentioned in this thread, but only this time the error code is 88.

 

[nc73]

Is this an issue that you think the 20uf Caps can fix? I'm having the same issue not only with flickering lights, but with the system shutting down on solar ramp up.
I finally went ahead and updated my firmware on the LVX6048WP from 1.19 to 1.23 and not only did it not fix the flickering issue, but its doing that shutting down thing that mentioned in this thread, but only this time the error code is 88.

If the issue is caused by electromagnetic interference than yes it could fix it but we don't know the exact cause. For around 10 bucks it's worth a shot. It will help some with the flickering but probably won't cure it. It did cure my flickering issues though, but not everyone. You just need a different type of LED lights.

 

[Eber]

I use this LED which only flickers for me when some major unit starts like the well pump or my Geothermal heat pump.

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I cannot vouch for its use in an enclosed unit.
You can search around and get them in soft or white light.
Every other LED I tried flickered no matter if it said no flicker or not..
I have not hooked up the CAP yet.
And I believe I need a soft start for the Geo unit (240v). If anyone has a good link. thanks

 

[insulso1]

Wierd thing is only one of the units faults… the only differene is secondary firmware version. One the no fault inverter it is 6021 and on the faulting inverter it is 8022.

 

[nc73]

Wierd thing is only one of the units faults… the only differene is secondary firmware version. One the no fault inverter it is 6021 and on the faulting inverter it is 8022.

So the secondary doesn't have to match? I guess only the first.

 

[Eber]

I use this LED which only flickers for me when some major unit starts like the well pump or my Geothermal heat pump.

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I cannot vouch for its use in an enclosed unit.
You can search around and get them in soft or white light.
Every other LED I tried flickered no matter if it said no flicker or not..
I have not hooked up the CAP yet.
And I believe I need a soft start for the Geo unit (240v). If anyone has a good link. thanks

I need to correct this. My geothermal unit is a recent addition to my system.
It does cause some flickering when it runs while charging the batteries from the solar panels.

 

[nc73]

I need to correct this. My geothermal unit is a recent addition to my system.
It does cause some flickering when it runs while charging the batteries from the solar panels.

Oh you def need the caps, mine did that also. Remember mine did that and when charging along with amps spiking.

 

[insulso1]

Fault 60 again… it happens as solar is ramping up and is connected to the grid…?. Same inverter but in reality it is the only one connected to all three sources. Ill do a check with the other inverter during the weekend.

 

[insulso1]

The fault is described as Inverter negative power.

 

[Shog9]

Has anyone in this forum with two or more paralleled LVX6048 units managed to charge from a genny?

Yes. My setup is two LVX6048 units in parallel, off-grid with a generator for backup (long dark winter weeks). One of the units is off most of the time right now because of the random restart issue; I turn it on only when I need the extra power (lots of motor loads usually). If I fire up the generator, the unused unit detects power and turns on to start charging (along with the always-on unit) - that gives me the ability to funnel 10kW from the generator to the batteries, which a single unit couldn't handle - this was actually a big motivation for installing two.

Critical note: I was not able to get generator input working with setting #2 (AC input voltage range) set to "UPS"; it has to be on "APL". I don't know why; voltage is certainly not dipping below 95VAC during normal operation. I have noticed that these inverters are quite sensitive to frequency - I had to tighten up the governor on my generator to get good results, as originally it would droop below 58hz under heavy load and the inverters would disconnect; it is possible that this setting also affects the tolerances for frequency as well.

Also fairly important: the relevant settings (for battery type, frequency, voltage range, etc.) MUST be the same on both inverters. The max charge current can be different. Some of those settings sync; some don't. I don't remember off-hand which ones don't, just that I've gotten bit by this before when I fat-fingered a setting change and ended up with differences between the two units.

Couple of other notes:

1. I use a dedicated breaker panel for the generator feed that will disconnect all three current-conducting legs (vs. the generator's own breaker which doesn't cut neutral). This seemed to resolve some occasional faults when starting or stopping the generator, and gives me a handy disconnect near the inverters which just seems like a good idea anyway.
2. I followed the advice from FilterGuy here to avoid running ground from the generator back to the inverters (that is, the generator and inverters are each grounded via exactly one connection to the ground bus). As others have noted here, ground loops through the inverters appear to really mess with things.

Those changes seemed to help with the general stability of the system under load, but weren't necessary to get the generator input *working* on a parallel system. At this point I've eliminated all spurious errors, but still encounter occasional and unpredictable complete system restarts when both units are inverting in parallel; have so far been able to find any common factors between instances - sometimes happens when solar input and loads are high, sometimes in the dead of night with no solar input and barely any load on the system. Can go days without an occurrence. Have *not* touched firmware thus far, as it isn't that much of an annoyance and I don't want to make it *worse*!

 

[insulso1]

No faults since last tuesday.. I changed the inverter settings to OSO…. Only solar charging seem to made the trick

 

[euphonius]

No faults since last tuesday.. I changed the inverter settings to OSO…. Only solar charging seem to made the trick

Interesting. The LVX-6048 seems very finicky about the source and nature of current for charging. AC input from grid or generator can trip it up, whether it’s running solo or paralleled. Its favored source is DC from solar, which would be fine if we received reliable daily sunshine or if battery storage was a whole lot cheaper.

Any news from MPP Solar about further firmware updates?

 

[samkhiltd]

Interesting. The LVX-6048 seems very finicky about the source and nature of current for charging. AC input from grid or generator can trip it up, whether it’s running solo or paralleled. Its favored source is DC from solar, which would be fine if we received reliable daily sunshine or if battery storage was a whole lot cheaper.

Any news from MPP Solar about further firmware updates?

They had said 63.05 was the last stable version they released

 

[euphonius]

Is there a parallel LVX universe? I'm looking for folks in this forum who are running multiple LVX6048 units in parallel, preferably off the grid. I'm setting up a stack of ***four units*** to power a cottage, a shop and a house I'm building, and charge an 82 kWh EV and a golf cart. 22kW array. Looking to learn from your experiences, and share mine, either in the open forum or a private group.

Thanks!

 

[nc73]

So instead of getting another LVX and parallel. i bought 2 eg4 6500ex and paralleled them. NICE is all I can say. Just installed it and so far so good. NO annoying transformer noise. It is silent when high loads power up. Did not want to deal with MPP.

 

[iamrich]

So instead of getting another LVX and parallel. i bought 2 eg4 6500ex and paralleled them. NICE is all I can say. Just installed it and so far so good. NO annoying transformer noise. It is silent when high loads power up. Did not want to deal with MPP.

I just powered mine up and the noise is pretty bad. Mine are in an insulated (foam) mechanical room and I can still hear them in the house. I haven't installed my cabinets in the kitchen yet, and that is the adjoining wall. Maybe more mass on the wall will help. I may end up scrapping this plan and going the same route. I wanted the big transformer to handle any big loads. Currently burning 6kwh a day on idle consumption because I can't figure out how to pass through without the inverters being on. Don't have panels or batteries yet. Might need a transfer switch setup for now.

 

[nc73]

I just powered mine up and the noise is pretty bad. Mine are in an insulated (foam) mechanical room and I can still hear them in the house. I haven't installed my cabinets in the kitchen yet, and that is the adjoining wall. Maybe more mass on the wall will help. I may end up scrapping this plan and going the same route. I wanted the big transformer to handle any big loads. Currently burning 6kwh a day on idle consumption because I can't figure out how to pass through without the inverters being on. Don't have panels or batteries yet. Might need a transfer switch setup for now.

actually MPP can only handle same as EG4. So far the eg4's are loud but doesn't have the annoy transformer sound. With a pair of EG4's it handles my well pump and heat pump just fine. I still need the cap it seems or else my heat pump does strange things.

 

[iamrich]

Installed and currently just wasting power Good news is no LED flicker (50+ cans, outside lighting, vanity bulbs, etc.)

 

[Ian30]

Installed and currently just wasting power Good news is no LED flicker (50+ cans, outside lighting, vanity bulbs, etc.)

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You said you dont have panels hooked up yet? When they are getting lots of PV power is when they start flickering the LED's. Even my cheap LED's don't flicker when running off battery, but during a sunny day they flicker like crazy.