rykelo
New Member
- Joined
- Sep 3, 2021
- Messages
- 38
Hello everyone, I have a Growatt Off Grid Solar Inverter SPF 3000TL LVM 24v receiving PV from 3 panels 440w each, in series, able to charge my LiFePo4 battery (a custom built 4000w without BMS communication supplied by a local solar company) and power the loads in my trailer. The main appliance is a 548 kWh/year refrigerator, and there's a little reducer running at all times converting 120v into 12v for the lights (LED) and carbon monoxide detector. My challenge is the battery keeps dying overnight, and then I'm unable to power up the Growatt in the morning (even if it's sunny). I have no connection to the grid, and no generator (yet). My efforts to configure the Growatt to prevent the battery from draining to zero haven't worked. Any help would be greatly appreciated!
Settings:
01 Output source Priority: SOL
04 Power Saving Mode : SdS (disabled, when I enable it, it immediately turns off the 120v to the trailer, even though there are loads)
05 Battery type: US2 (lithium battery without bms communication)
06 Auto Restart when overload occurs: enabled
07 auto restart over temp: enabled
12 setting voltage point back to utility source when selecting sbu priority or solar first in program 1: 24v
13 setting voltage point back to battery mode when selecting SBU priority or solar first in
program 1: (26v? I can't remember)
19 and 20: charging voltage and floating charging voltage: 28.2v
21: low DC cut off voltage: 24v
Thanks guys!
Settings:
01 Output source Priority: SOL
04 Power Saving Mode : SdS (disabled, when I enable it, it immediately turns off the 120v to the trailer, even though there are loads)
05 Battery type: US2 (lithium battery without bms communication)
06 Auto Restart when overload occurs: enabled
07 auto restart over temp: enabled
12 setting voltage point back to utility source when selecting sbu priority or solar first in program 1: 24v
13 setting voltage point back to battery mode when selecting SBU priority or solar first in
program 1: (26v? I can't remember)
19 and 20: charging voltage and floating charging voltage: 28.2v
21: low DC cut off voltage: 24v
Thanks guys!