andrewg-MT
New Member
- Joined
- Nov 10, 2022
- Messages
- 9
Hello,
New to forum. We have a off-grid system for a small cabin, Running Growatt 5000es system with mid-transformer & 2 EG4 lithium 48v 100ah batteries, 14 325w panels, & a 9k 240v generator backup wired into the AC input. System has run good until first snow. We have high efficiency everything with gas for dryer & stove so our daily load is less then 1 kW. System held for 2 days then batteries shut off. No big deal, I expect that with no effective solar from panels bc of snow, I turn the generator on to power up the house & to charge the batteries. I first disconnected panels and figured the generator would bring the two batteries back up no problem. 6 hrs later nothing, batteries still flat, registered error 4 still on Growatt (low battery voltage error). I am thinking that the Growatt system OS sees the Solar is not producing so it moves on to AC source to recharge batteries Correct? At this point I am at a loss, m the system allows for priority in charging sources so charging should take from AC…
(Environment Background) - Batteries & Inverter are in a dedicated insulated shed with ambient room temp at 38-40 degrees with single digits outside, we live in MT, Given the line feed from generator is limited to 50amp 240v I figured charging would be simple & fast. Can someone please illuminate my problem(s). I am wondering if the cold temps are causing more problems problems than I think. Please nothing personal my wife is fine point out those problems! This is our only power source so we are in a bit of a predicament. Thank you in advance. Photo shows the Growatt interface panel after disconnecting panels. I’m a bit concerned that the charge load says sol & not AC.
Andrew
New to forum. We have a off-grid system for a small cabin, Running Growatt 5000es system with mid-transformer & 2 EG4 lithium 48v 100ah batteries, 14 325w panels, & a 9k 240v generator backup wired into the AC input. System has run good until first snow. We have high efficiency everything with gas for dryer & stove so our daily load is less then 1 kW. System held for 2 days then batteries shut off. No big deal, I expect that with no effective solar from panels bc of snow, I turn the generator on to power up the house & to charge the batteries. I first disconnected panels and figured the generator would bring the two batteries back up no problem. 6 hrs later nothing, batteries still flat, registered error 4 still on Growatt (low battery voltage error). I am thinking that the Growatt system OS sees the Solar is not producing so it moves on to AC source to recharge batteries Correct? At this point I am at a loss, m the system allows for priority in charging sources so charging should take from AC…
(Environment Background) - Batteries & Inverter are in a dedicated insulated shed with ambient room temp at 38-40 degrees with single digits outside, we live in MT, Given the line feed from generator is limited to 50amp 240v I figured charging would be simple & fast. Can someone please illuminate my problem(s). I am wondering if the cold temps are causing more problems problems than I think. Please nothing personal my wife is fine point out those problems! This is our only power source so we are in a bit of a predicament. Thank you in advance. Photo shows the Growatt interface panel after disconnecting panels. I’m a bit concerned that the charge load says sol & not AC.
Andrew
