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Started on my solar journey about a year ago and naturally looked at installing a small mini split to reduce the load on my main HVAC. I have run into a number of issues and a couple of solutions that you may find helpful. Installed the Leto model of Senville's 12,000 btu unit with 110v. Went...

01 was set to SBU as recommended. But I reset 20( battery stop discharging voltage when grid is available) from 24 to 24.5 V. This seemed to do the trick but it also adds to my suspicion that my Big Battery Hawk Max is not working optimally. When I originally received it found out it had a bad...

Ill give it a try.

Yes, That is what I did and it started back up. My issue is that the AC in won't start unless it sees PV voltage.

I have the MPPLV2424 but am considering the Growatt as it appears to have a UPS function so the line charging will kick in when the battery drops below a certain setting. The MPP does not do this if there is no PV voltage (middle of night etc.) Can anyone confirm this?

I have an MPPLV2424 (Green) with a 24V BigBattery Hawk Max. First issue. Originally BB was to be configured to 29V max but there was a problem communicating with the MPP and the MPP would shut down going into float. So I was told to set max voltage to 27V (but only see up to 26.5V). I dont...

Hi. Shopsolarkits revised their settings to the following: 17 - 27v 18 - 27V 19 - 21.6V 20 - 22V 21 - 27V However I ran into another issue with the voltage dropping and the battery shutting down before the utility would start charging. This happened in the morning before any PV voltage was...

Update. System worked fine all morning, even with battery fully charged. Around 12:30pm PV input changed to show 90V and 2W. Found I have to turn off breaker and wait for LV2424 to go into battery mode. Turn PV breaker back on and everything works fine. PV is generating 86V and 286W. If breaker...

Thanks for the response. Doesn't explain why solar input stops though. If I turn the solar breaker off and back on it starts to show solar output again.

Yes - that's what it is set to. Battery seems fine.

MPP LV2424 stops accepting PV input. For some reason once the battery is fully charged PV1 (4 - 200W panels series) shows 89V but only 2W and does not supply power to the load (10%). Using AC in. Utility powers the load and continues to charge battery if needed. System works fine in the morning...

Here are BB's specs.

#17 was set to 29.2V (MPP default was 28.2) #18 was set to 19.2V (MPP default was 27) Reset 20 to 24V Will just leave inverter switched off and move appliances if we have an outage until I get approval on panels.

Thanks. I'll review and reset. I felt that not having panels was affecting the charging but there is no mention of running this type of configuration. I want to let it cycle again to see for sure how it works. I thought it had dropped to 21V and I saw an 04 fault without going to charge.

09 is Grd (their manual uses some characters that look Klingon) 10 Have used both these settings - this is where a lack of clear documentation gets frustrating. They do not describe battery mode or Power saving mode so I have no idea what those mean and how to determine if I am in either one. 20...

New system that I am using only as a backup without the panels. (Fighting with the HOA) For some reason the battery will not charge from utility. If I turn off the MPP it starts charging. I had the panels hooked up briefly to test everything and it seemed to charge fine from the panels and...

I did. Turned out it had a bad BMS. Very annoying that I had to repair under warranty as it was bad from the day it shipped. Took over a month to get it repaired.

Guys - I know this thread is pretty old but I am having the same problem with a new MPP LV2424 (Green). I am using it without panels as a backup system. However it wont charge from utility unless I turn off the MPP. 01 SbU 05 bLU 10 have tried CSO and SnU (no difference). System isn't much...

Just installed a solar kit a week ago (9/30/22). MPP LV2424 (green) with Big Battery Hawk Max (5.2Kw). Note- have not installed PV yet as still waiting on permit. Hooked everything up as recommended and set LV2424 parameters. Used AC in. Everything worked fine. Only had a small load on the...