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I noticed the screen shot shows APP where the instruction sheet says BOOT. Could this be an issue?

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That part is true. I had both a broken Wifi dongle and a broken CT. My distributor, GSL, shipped out replacements relatively quickly, however.

requests: - start: 0x2298 end: 0x229B mb_functioncode: 0x03 - start: 0x3130 end: 0x3157 mb_functioncode: 0x03 parameters: - group: Solar items: - name: "PV1 Power" class: "power" state_class: "measurement" uom: "W" scale: 1...

You need to disable "insulation d" -> "Leack Dete". I'm not sure if that is the same as the ARC you are referring to. Setup > Run Setting > Active Rep > Insulation D > Disable

I think it has been doing that for the past two firmware versions, at least on my unit. For me, its 85v until it reaches 1A (or roughly 100w), then it allows V to increase. At the end of the day opposite, it drops to 85v once its down to approx 100w, then lets the amps taper to zero. I only...

@fromport I believe you have multiple strings (I only have 1 hooked up right now), these are the values you need for the other strings PV1 Voltage 0x3130 PV1 Amperage 0x3131 PV1 Wattage 0x3132 PV2 Voltage 0x3133 PV2 Amperage 0x3134 PV2 Wattage 0x3135 PV3 Voltage 0x3136 PV3...

I'm a bit unclear about grid connection from reading the manual. For the breaker in the main panel, feeding to the grid connection, the spec sheet says the 8k unit can peak output at 38.3A (8ga req'd) but can draw 50 amps (6 ga req'd) and the manual says to make this connection with 10awg wire...

I believe that is the 8/3 firmware and generator was 8/23

Does that ESP32 require an arduino to work, or can you hook it up just usb to power, and then connect rx/tx and connect to it via wifi?

This version has parallel mode but does NOT have generator option. I am also getting alarms: 06: Grid low vol 08: Grid low freq (edit: these eventually went away) Which makes sense since I'm off-grid, but these don't occur on the previous version. Some changes.. Setting menu now has option...

I have 3 packs of 280Ah from Docan, all are doing well so far. I have that same breaker, and a pin came loose inside causing a spring and the locking tab to malfunction. Hopefully it was a one time fluke and mine was defective but it might not be a bad idea to pull the cover and check. In my...

I have no idea what i'm doing, just trial and error. I am using windows10, and running python scripts in PowerShell. """ Scan Modbus registers to find valid registers""" from pysolarmanv5 import PySolarmanV5, V5FrameError import umodbus.exceptions def main(): modbus = PySolarmanV5(...

The CTs are certainly 1000:1 turn ratio. 100 amps thru the CT will measure 100mA at the leads. I also tried 100:1 CTs and verified the "incorrect" reading at the leads and on the inverter display.

I believe there was a different work around, but if you put the file on the root of your C: drive, it may fix that, worth a try.

I finally got to the point where everything is working well, and consistently off-grid. I have the 24mm CTs now, but I'm reluctant to connect to the grid after reading about these issues... I didn't realize the battery charge voltage was as high as it was, and I turned it down this evening...

Is discharge enabled in the app?

I was the one having that 8kw overload error. Please let us know if the low 3/4 has been solved with the generator version. My older MR parallel firmware works great, but I have low 3/4. I read a while ago that MR was going to release a firmware update to allow for only 1 set of CTs, but I...

Same here. I am only doing basic. I have not tried anything beyond basics as @fromport mentioned. Knock on wood, my two work perfectly and the only downtime is from when I was messing with (crap) firmware. I am not using them "properly" since I am off-grid and have to use Lead-Acid battery...

Yes, I went back to the old firmware (again). If you disconnect ethernet cable, or turn off the RSD switch, it will turn off (reboot?) the master unit. On the old firmware I keep flashing back to, I am able to set charge voltages separately as well as power off either inverter and the other...

I'm not at home right now, but I *think* I have successfully rebooted the inverter via the modbus protocol. As posted above, I'm using home assistant to watch values in near real time. I am off-grid with batteries. I have two inverters hooked up in parallel with PV only going to my "Left"...

Excellent, Thanks!

Never thru Solarman, I have yet to see an update on there. GSL did push an update for me, but it failed because I didn't have grid backup

Push IN the RSD button.

All commands for read/write are via wifi using the included solarman adapter. https://github.com/jmccrohan/pysolarmanv5 Since my computer/HA Server is windows based, I am running the python scripts in PowerShell.

Looks good! This is what I have logging in my HA so far.... It does seem to be working pretty well. Much better than the old days when data would just stop reporting from the MR :) This is my charge/discharge graph

This is my curve when it occurred. As you can see, I restarted the inverter at lunch, and it was happy again.

I am on OLD firmware and I see the same problem you described. I even tried moving strings between inverters to see if it was the inverter or a bad panel. Here's the strange part, the low output matches mppt with 2 in parallel! I didn't think it could be firmware!

That's what I have been doing, I just wasn't sure if there was a proper sequence. If I connect battery first, the inverter will reboot when I turn on PV, for example. so I have been turning on PV then battery. I have Grid connect, but often leave it off. Also, in the evening, with grid...

From what I have tested (I'm new to this too) the output is in mA. Keep in mind this is AC. So you have AC flowing thru the CT, you will measure AC with your meter at the leads.

Interesting, I tried to copy them and all I got was disconnected and unknown or unavailable ?

What is the best or recommeneded way to restart these inverters? I have battery, PV and grid connected.

Not sure if I can post a video. This is NOT with the Megarevo CT (ratio is wrong) but same idea. (nope, no video)

Just to add context to my situation. Look at these, I thought my HA parameters were wrong. All strings are the same, and pointed in same direction on the same roof pitch. This is after I rearranged so I could monitor the 'situation' easier. This one has an "outlier" but I think it was...

Glad to hear it! Can you share how you wired your units for parallel operation?

double post...

Out of curiosity, does it work in lead-acid mode?

With no grid, just battery and PV connected, when sun is not sufficient to power the inverter, the relays click and the screen turns off. The screen will then turn back on, show 'initializing' and seem operational. Then if I see PV get to roughly 300watts, the relays will click, the screen...

Which position is your RSD switch?

Even if you unplug comm?

I adjusted the charge current and the spikes still occur and as frequent. My battery is at about 50% SOC today so I know its not high or low voltage.

Does this match the GSL/megarevo 8k?

So I just upgraded firmware, and now I'm stuck at 56a combined, lol. 28a ea inverter.

I can plug a single CT in to the inverter tonight and just clamp it over a random load line to see which leg the inverter screen shows. I wonder if these ports have changed in different firmwares.

Interesting. I would think in lead acid mode with a correct AH and charge voltages settings and DOD set appropriately, it should have no reason not to charge since it thinks it is a "dumb" battery.

I see the same morning spikes as everyone else. The unit needs 120v on the DC side to "turn on" the MPPT. It will then hold 85v and allow the current to increase until 1amp. At that point, it allows voltage to increase to find max power of the panels. This has been very consistent. It does...

I tried that when I first got mine. The problem is that when it tried to reboot, it shut down the loads (wifi, etc) since I'm offgrid and it failed to update. This left me with an inverter that refused to boot. Luckily the firmware was posted in this thread and I was able to flash from my laptop.

Well, bad news. Parallel doesn't work on this latest firmware. Well, it does function and share the load, but the "reporting" is all done from the master, unlike the previous versions which kept settings separate. What this means is that on the old version, you can set things like charge...

An interesting note about the battery wake up is that I found out on my lead acid setting, the EPS does not turn off when the "END VOLTAGE" (48 V) was reached. My BMS turned off discharge at 45v. The problem here is that the MR no longer senses the battery because no output from BMS and no...

The later MR firmwares enable generator control, just not smart load