Repro
Solar Enthusiast
I have been intensely engaged with my solar hobby for over a year, and I have learned a lot. I have made SOOOO many mistakes, and paid for them dearly. Maybe some of my other posts will save people from having the same problems.
I have a Growatt 3000 LVM 24V inverter. I have been so happy with it until recently. I may have pinpointed an issue I have been having. Just a quick overview of my system:
2000W array
Growatt 3000 LVM 24V
4 200AH LiFePO4 batteries (2S/2P) for 24V
AC input is on an isolated 20A circuit
AC output to a 6 space sub panel wired to four 20A outlets with breakers at the moment.
What am I running:
Two full size refrigerators
Front loader wash machine (ran 2-3 times/week)
Two 1.5 HP sump pumps (run for 5-7 seconds maybe twice a day)
One outlet in my garage for two battery tenders
It is my intention to install a switch to run my furnace in winter during outages (8A draw)
Problem: Since I installed the Growatt system, my refrigerator lights flicker badly when both fridges run at the same time, We have gone over the wiring multiple times, shortened the wiring runs as much as possible and have tried multiple configuration parameters on the Growatt. I have called the dealer for support, did a factory reset and reconfigured. The only explanation was that the two refrigerators might be causing fluctuations. Another suggestion was to change the wattage of light bulb (It has LED's). In the short time the system has been running, my upstairs one year old refrigerator is now broken. You could hear the compressor running funny when the lights flickered. It is just my opinion, but I think the Growatt is the culprit.
The load on the inverter was ridiculously low. Seldom did it see over 1000W at one given time during the course of the day. See chart attached. So why can't the inverter in the Growatt handle this? I have ran these two refrigerators on two different portable units that I built with no flickering or issues for weeks at a time doing tests. One has a Ginadel 2200W inverter, and the other has a GoPower Industrial 1500W inverter (both pure sine wave). Never once did I experience flickering or the compressors running strangely.
Can anyone shed some light on this? I do not want to sound so negative, but I have ran into so many issues over the course of installing this Growatt system from zoning, permitting, inspections and now this, that I am about ready to pack it in. Total frustration!!!!!!!!! I hope that an answer can be found. If I am right, stay away from Growatt. Another expensive mistake that cost me a fridge, and now another inverter investment.
I have a Growatt 3000 LVM 24V inverter. I have been so happy with it until recently. I may have pinpointed an issue I have been having. Just a quick overview of my system:
2000W array
Growatt 3000 LVM 24V
4 200AH LiFePO4 batteries (2S/2P) for 24V
AC input is on an isolated 20A circuit
AC output to a 6 space sub panel wired to four 20A outlets with breakers at the moment.
What am I running:
Two full size refrigerators
Front loader wash machine (ran 2-3 times/week)
Two 1.5 HP sump pumps (run for 5-7 seconds maybe twice a day)
One outlet in my garage for two battery tenders
It is my intention to install a switch to run my furnace in winter during outages (8A draw)
Problem: Since I installed the Growatt system, my refrigerator lights flicker badly when both fridges run at the same time, We have gone over the wiring multiple times, shortened the wiring runs as much as possible and have tried multiple configuration parameters on the Growatt. I have called the dealer for support, did a factory reset and reconfigured. The only explanation was that the two refrigerators might be causing fluctuations. Another suggestion was to change the wattage of light bulb (It has LED's). In the short time the system has been running, my upstairs one year old refrigerator is now broken. You could hear the compressor running funny when the lights flickered. It is just my opinion, but I think the Growatt is the culprit.
The load on the inverter was ridiculously low. Seldom did it see over 1000W at one given time during the course of the day. See chart attached. So why can't the inverter in the Growatt handle this? I have ran these two refrigerators on two different portable units that I built with no flickering or issues for weeks at a time doing tests. One has a Ginadel 2200W inverter, and the other has a GoPower Industrial 1500W inverter (both pure sine wave). Never once did I experience flickering or the compressors running strangely.
Can anyone shed some light on this? I do not want to sound so negative, but I have ran into so many issues over the course of installing this Growatt system from zoning, permitting, inspections and now this, that I am about ready to pack it in. Total frustration!!!!!!!!! I hope that an answer can be found. If I am right, stay away from Growatt. Another expensive mistake that cost me a fridge, and now another inverter investment.